Union Military Organisations: Eastern Theatre

Union Military Organisations: Eastern Theatre

Index

Military Division of the James

Middle Military Division

Military Division of the Potomac

Middle Department

Mountain Department

Department of Northeastern Virginia

Department of the Potomac

Department of the Rappahannock

Department of the Shenandoah #1

Department of the Shenandoah #2

Department of Virginia #1

Department of Virginia #2

Department of Virginia and North Carolina

Department of West Virginia

Department of Western Virginia

District of Alexandria, Virginia

Cheat Mountain District, Virginia #1

Cheat Mountain District, Virginia #2

Cheat Mountain District, Virginia #3

Cheat River District, Virginia

District of Cumberland, Virginia

District of Fort Monroe, Virginia

District of the Gap, Virginia

District of Grafton, Virginia

District of Harper’s Ferry, West Virginia

District of Harper’s Ferry and Cumberland, Virginia

District of Henrico, Virginia

District of the Kanawha, Virginia

District of Lynchburg, Virginia

District of the Northern Neck, Virginia

District of the Nottoway, Virginia

District of Patuxent, Virginia

District of the Peninsula, Virginia

Railroad District, Virginia

District of the Valley of the Big Sandy River, Virginia

District of Virginia #1

District of Virginia #2

District of Eastern Virginia

District of Northeastern Virginia

District of Southwestern Virginia

District of Western Virginia

District of Yorktown, Virginia #1

District of Yorktown, Virginia #2

Sub-District of the Appomattox, Virginia

Sub-District of the Blackwater, Virginia

Sub-District of the Kanawha, Virginia

Sub-District of the Peninsula, Virginia

Sub-District of the Rappahannock, Virginia

Sub-District of Roanoke, Virginia

Sub-District of the South Anna, Virginia

Sub-District of Yorktown, Virginia

Army of the James

Army of the Kanawha

Army of Northeastern Virginia

Army of Occupation

Army of the Potomac

Army of the Shenandoah #1

Army of the Shenandoah #2

Army of the Shenandoah #3

Army of Virginia

Army of West Virginia

Centre Grand Division, Potomac

Left Grand Division, Potomac

Reserve Grand Division, Potomac

Right Grand Division. Potomac

Sheridan’s Cavalry Command Potomac

I Corps Potomac #1

I Corps Potomac #2

I Corps Virginia

II Corps Potomac

II Corps Virginia

III Corps Potomac

III Corps Virginia

IV Corps Potomac

IV Corps Virginia

IV Corps Virginia and North Carolina

V Corps Potomac #1

V Corps Potomac #2

VI Corps Potomac #1

VI Corps Potomac #2

VI Corps Shenandoah

VII Corps Virginia

VII Corps Virginia and North Carolina

VIII Corps Middle

VIII Corps Atlantic

IX Corps Potomac #1

IX Corps Potomac #2

IX Corps Potomac #3

IX Corps Virginia #1

IX Corps Virginia #2

X Corps James

XI Corps Potomac

XII Corps Potomac

XVIII Corps James

XIX Corps Shenandoah

XXIV Corps James

XXV Corps James

Cavalry Corps Potomac

Cavalry Corps Shenandoah

Military Division of the James

19 April 1865-27 June 1865

Henry Wager Halleck 19 April 1865-27 June 1865

19 April 1865: The Military Division of the James was established to comprise the Department of Virginia and the Department of the Potomac.

19 April 1865: Major-General Henry Wager Halleck assumed command of the Military Division of the James.

19 April 1865: The Department of the Potomac transferred to the Military Division of the James.

19 April 1865: The Department of Virginia transferred to the Military Division of the James.

19 April 1865: The parts of North Carolina not occupied by the armies of the Military Division of the Mississippi transferred from the Department of North Carolina to the Military Division of the James.

27 June 1865: The Department of the Potomac was discontinued.

27 June 1865: The Department of Virginia transferred from the Military Division of the James to the Military Division of the Atlantic.

27 June 1865: The Military Division of the James was discontinued and its territory incorporated into the Military Division of the Atlantic.

Middle Military Division

7 August 1864-27 June 1865

Philip Henry Sheridan 7 August 1864-27 February 1865

Winfield Scott Hancock 27 February 1865-28 February 1865,

Alfred Thomas Archimedes Torbert interim 28 February 1865

Winfield Scott Hancock 28 February 1865-27 June 1865

7 August 1864: The Middle Military Division was established, comprising the Department of Washington, the Department of the Susquehanna, the Middle Department, and the Department of West Virginia.

7 August 1864: The Middle Department transferred to the Middle Military Division.

7 August 1864: The Department of the Susquehanna transferred to the Middle Military Division.

7 August 1864: The Department of Washington transferred to the Middle Military Division.

7 August 1864: The Department of West Virginia transferred to the Middle Military Division.

7 August 1864: The Army of the Shenandoah was established in the Middle Military Division.

7 August 1864: Major-General Philip Henry Sheridan assumed temporary command of the Middle Military Division.

21 September 1864: Major-General Philip Henry Sheridan assumed full command of the Middle Military Division.

21 September 1864: The Department of the Susquehanna was discontinued, and its territory transferred to the Department of Pennsylvania.

21 September 1864: The Department of Pennsylvania was established in the Middle Military Division, comprising the state of Pennsylvania and the counties of Columbiana, Belmont and Jefferson counties of Ohio.

27 February 1865: Major-General Winfield Scott Hancock assumed command of the Middle Military Division, succeeding Major-General Philip Henry Sheridan.

28 February 1865: Brigadier-General Alfred Thomas Archimedes Torbert assumed temporary command of the Middle Military Division, interim for Major-General Winfield Scott Hancock.

28 February 1865: Major-General Winfield Scott Hancock assumed command of the Middle Military Division, succeeding Brigadier-General Alfred Thomas Archimedes Torbert.

17 May 1865: VIII Corps Middle transferred from the Middle Department to the direct command of the Middle Military Division.

27 June 1865: The Department of Pennsylvania was discontinued, and its territory incorporated into the Middle Department and the Department of the Ohio.

27 June 1865: The Department of the Potomac was discontinued, and its territory incorporated into the Middle Department.

27 June 1865: The Middle Department transferred to the Military Division of the Atlantic.

27 June 1865: The Department of Washington transferred to the Military Division of the Atlantic.

27 June 1865: The Department of West Virginia was discontinued, and its territory was incorporated into the Middle Department and the Department of the Ohio.

27 June 1865: VIII Corps Middle transferred to the Military Division of the Atlantic.

27 June 1865: The Middle Military Division was discontinued and its territory incorporated into the Military Division of the Atlantic.

Military Division of the Potomac

25 July 1861-17 August 1861

George Brinton McClellan 25 July 1861-17 August 1861

25 July 1861: The Military Division of the Potomac was established, comprising the Department of Washington and the Department of Northeastern Virginia.

25 July 1861: Major-General George Brinton McClellan was appointed to command the Military Division of the Potomac, arriving on 27 July 1861.

27 July 1861: Major-General George Brinton McClellan arrived to command the Military Division of the Potomac.

17 August 1861: The Military Division of the Potomac was discontinued.

Middle Department

22 March 1862-31 December 1865

John Adams Dix 22 March 1862-1 June 1862 interim 9 June 1862

John Ellis Wool 1 June 1862-17 December 1862 interim 22 December 1862

Robert Cumming Schenck 17 December 1862-12 March 1863

William Walton Morris temporary 12 March 1863-20 March 1863

Robert Cumming Schenck 20 March 1863-10 August 1863

William Walton Morris temporary 10 August 1863-31 August 1863

Robert Cumming Schenck 31 August 1863-22 September 1863,

William Walton temporary 22 September 1863-28 September 1863

Erastus Barnard Tyler temporary 28 September 1863-10 October 1863

Robert Cumming Schenck 10 October 1863-21 November 1863 interim 5 December 1863

Henry Hayes Lockwood 21 November 1863-12 March 1864 interim 22 March 1864

Lewis Wallace 12 March 1864-1 February 1865

William Walton Morris temporary 1 February 1865-19 April 1865

Lewis Wallace 19 April 1865-27 June 1865 interim 27 June 1865-18 July 1865

Winfield Scott Hancock 27 June 1865-18 August 1865

Andrew Atkinson Humphreys temporary 18 August 1865-23 October 1865, 23 October 1865-13 November 1865

Winfield Scott Hancock 13 November 1865-21 December 1865

Emory Upton temporary 21 December 1865-29 December 1865

Winfield Scott Hancock 29 December 1865-31 December 1865

22 March 1862: The Middle Department was established, comprising New Jersey, Pennsylvania, Delaware, the Eastern Shores of Virginia and Maryland and Cecil, Harford, Baltimore, and Anne Arundel counties in Maryland.  transferred from the Department of the Potomac.

22 March 1862: Major-General John Adams Dix assumed command of the Middle Department.

22 March 1862: The District of the Eastern Shore of Maryland was established in the Middle Department.

1 June 1862: Major-General John Ellis Wool was appointed to command the Middle Department, arriving on 9 June 1862.

9 June 1862: Major-General John Ellis Wool arrived to command the Middle Department, succeeding Major-General John Adams Dix.

12 July 1862: VIII Corps Middle was organised in the Middle Department.

17 December 1862: Brigadier-General Robert Cumming Schenck was appointed to command the Middle Department, arriving on 22 December 1862, to succeed Major-General John Ellis Wool.

22 December 1862: Major-General Robert Cumming Schenck arrived to assume command of the Middle Department, succeeding Major-General John Ellis Wool.

6 February 1863: The state of New Jersey transferred from the Middle Department to the Department of the East.

12 March 1863: Colonel William Walton Morris assumed temporary command of the Middle Department, succeeding Major-General Robert Cumming Schenck.

16 March 1863: The District of Western Virginia was discontinued, and the territory of Western Virginia transferred from the Department of the Ohio to the Middle Department.

20 March 1863: Brigadier-General Robert Cumming Schenck assumed command of the Middle Department, succeeding Colonel William Walton Morris.

9 June 1863: Pennsylvania west of Johnstown and the Laurel Hill mountains, the counties of Hancock, Brooke and Ohio in the West Virginia “panhandle”, and the Ohio counties of Columbiana, Jefferson and Belmont, transferred from the Middle Department and the Department of the Ohio to the Department of the Monongahela.

9 June 1863: Pennsylvania east of Johnstown and the Laurel Hill Mountains transferred from the Middle Department to the Department of the Susquehanna.

9 June 1863: Gallipolis, Ohio, transferred from the Department of the Ohio to the Middle Department.

3 July 1863: The District of Delaware was established in the Middle Department, comprising the state of Delaware.

3 August 1863: The territory of Maryland west of the Monocacy River and the territory around Harper’s Ferry transferred from the Middle Department and the Department of the Potomac to the Department of West Virginia.

10 August 1863: Colonel William Walton Morris assumed temporary command of the Middle Department, succeeding Major-General Robert Cumming Schenck.

31 August 1863: Brigadier-General Robert Cumming Schenck assumed command of the Middle Department, succeeding Colonel William Walton Morris.

22 September 1863: Colonel William Walton Morris assumed temporary command of the Middle Department, succeeding Brigadier-General Robert Cummings Schenck.

28 September 1863: Brigadier-General Erastus Barnard Tyler assumed temporary command of the Middle Department, succeeding Colonel William Walton Morris.

10 October 1863: Brigadier-General Robert Cumming Schenck assumed command of the Middle Department, succeeding Brigadier-General Erastus Barnard Tyler.

21 November 1863: Brigadier-General Henry Hayes Lockwood was appointed to command the Middle Department, arriving on 5 December 1863, to succeed Major-General Robert Cumming Schenck.

5 December 1863: Brigadier-General Henry Hayes Lockwood arrived to command the Middle Department, succeeding Major-General Robert Cumming Schenck.

21 December 1863: Northampton and Accomac counties of Virginia transferred from the Middle Department to the Department of Virginia and North Carolina.

12 March 1864: Major-General Lewis Wallace was appointed to command the Middle Department, arriving March 22 1864, to succeed Brigadier-General Henry Hayes Lockwood.

22 March 1864: Major-General Lewis Wallace arrived to command the Middle Department, succeeding Brigadier-General Henry Hayes Lockwood.

7 August 1864: The Middle Department transferred to the Middle Military Division.

7 August 1864: Major-General Lewis Wallace retained command of the Middle Department.

1 February 1865: Colonel William Walton Morris assumed temporary command of the Middle Department, succeeding Major-General Lewis Wallace.

24 March 1865: The District of Delaware and the Eastern Shore was established in the Middle Department.

24 March 1865: The District of Delaware was discontinued, and incorporated into the District of Delaware and the Eastern Shore.

24 March 1865: The District of the Eastern Shore of Maryland was discontinued, and incorporated into the District of Delaware and the Eastern Shore.

1 April 1865: The District of Annapolis was established in the Middle Department.

19 April 1865: Major-General Lewis Wallace assumed command of the Middle Department, succeeding Colonel William Walton Morris.

17 May 1865: VIII Corps Middle transferred from the Middle Department to the direct command of the Middle Military Division.

27 June 1865: The Department of Pennsylvania was discontinued, and its territory incorporated into the Middle Department and the Department of the Ohio.

27 June 1865: The Department of the Potomac was discontinued, and its territory incorporated into the Middle Department.

27 June 1865: The Middle Department transferred from the Middle Military Division to the Military Division of the Atlantic.

27 June 1865: Major-General Winfield Scott Hancock was appointed to command the Middle Department, arriving on 18 July 1865, to succeed Major-General Lewis Wallace.

27 June 1865: Major-General Lewis Wallace retained interim command of the Middle Department.

27 June 1865: The District of Columbia, Montgomery County, that part of Anne Arundel County south of the Annapolis & Elkridge Railroad including Annapolis and Prince George’s, Calvert, Charles and St Mary’s counties in Maryland, and Alexandria and Fairfax counties in Virginia were transferred from the Department of the Potomac and the Department of Washington to the Middle Department.

27 June 1865: The Department of West Virginia was discontinued, and its territory was incorporated partly into the Middle Department and partly into the Department of the Ohio.

18 July 1865: Major-General Winfield Scott Hancock arrived to command the Middle Department, succeeding Major-General Lewis Wallace.

19 July 1865: The District of Annapolis was discontinued.

27 July 1865: Fort Delaware transferred from the War Department to the Middle Department.

1 August 1865: The District of Delaware and the Eastern Shore was discontinued.

18 August 1865: Major-General Andrew Atkinson Humphreys assumed temporary command of the Middle Department, succeeding Major-General Winfield Scott Hancock.

23 October 1865: Major-General Andrew Atkinson Humphreys assumed full command of the Middle Department, succeeding Major-General Winfield Scott Hancock.

13 November 1865: Major-General Winfield Scott Hancock assumed command of the Middle Department, succeeding Major-General Andrew Atkinson Humphreys.

21 December 1865: Brigadier-General Emory Upton assumed temporary command of the Middle Department, succeeding Major-General Winfield Scott Hancock.

29 December 1865: Major-General Winfield Scott Hancock assumed command of the Middle Department, succeeding Brigadier-General Emory Upton.

Mountain Department

11 March 1862-26 June 1862

William Starke Rosecrans interim 11 March 1862-29 March 1862

John Charles Frémont 11 March 1862-26 June 1862

11 March 1862: The Mountain Department was established. Its territory included the parts of Michigan, Ohio, Kentucky, and Tennessee west of a line running north-south through Knoxville, Tennessee; all of Maryland and Virginia west of the line from Flintstone Creek, Maryland, to South Branch Mountain, Town Hill Mountain, Branch Mountain Big Ridge, North Shenandoah Mountain, Purgatory Mountain, Blue Ridge Mountain and Allegheny Mountain to the border of North Carolina. This territory was taken from the Department of the Ohio and the Department of Western Virginia.

11 March 1862: Major-General John Charles Frémont was appointed to command the Mountain Department, arriving on 29 March 1862.

11 March 1862: Brigadier-General William Starke Rosecrans retained interim command of the Mountain Department pending the arrival of Major-General John Charles Frémont.

11 March 1862: The Department of Western Virginia was discontinued, and its territory transferred to the Mountain Department.

11 March 1862: The Railroad District transferred from the Department of Western Virginia to the Mountain Department.

11 March 1862: The Cheat Mountain District transferred from the Department of Western Virginia to the Mountain Department.

11 March 1862: The District of the Kanawha transferred from the Department of Western Virginia to the Mountain Department.

11 March 1862: The District of Cumberland was established in the Mountain Department.

11 March 1862: The District of the Gap was established in the Mountain Department.

11 March 1862: The District of the Valley of the Big Sandy River was established in the Mountain Department.

29 March 1862: Major-General John Charles Frémont arrived to command the Mountain Department, succeeding Major-General William Starke Rosecrans.

7 April 1862: The District of Cumberland was discontinued.

8 June 1862: The territories of Eastern Kentucky and eastern Tennessee transferred from the Mountain Department to the Department of the Mississippi.

8 June 1862: The parts of Virginia west of the road running from Williamsport to Martinsburg, Winchester, Strasburg, Harrisonville, Staunton and then south to the Blue Ridge Mountains transferred from the Department of the Shenandoah to the Mountain Department.

8 June 1862: The District of the Valley of the Big Sandy River was discontinued.

26 June 1862: The District of the Gap was discontinued.

26 June 1862: The District of the Kanawha was discontinued.

26 June 1862: The Cheat Mountain District was discontinued.

26 June 1862: The Railroad District was discontinued.

26 June 1862: I Corps Virginia was established to include the field forces formerly in the Mountain Department.

26 June 1862: The Mountain Department was discontinued.

Department of Northeastern Virginia

27 May 1861-17 August 1861

Irvin McDowell 27 May 1861-17 August 1861

27 May 1861: The Department of Northeastern Virginia was established, comprising the part of Virginia east of the Allegheny Mountains and north of the James River, and west of the existing Department of Virginia within sixty miles of Fort Monroe. Its territory was detached from the Department of the East.

27 May 1861: Brigadier-General Irvin McDowell was appointed to command the Department of Northeastern Virginia, arriving on 28 May 1861.

28 May 1861: Brigadier-General Irvin McDowell arrived to assume command of the Department of Northeastern Virginia.

8 July 1861: The Army of Northeastern Virginia was established in the Department of Northeastern Virginia.

25 July 1861: The Department of Northeastern Virginia transferred to the Military Division of the Potomac.

25 July 1861: Brigadier-General Irvin McDowell retained command of the Department of Northeastern Virginia.

17 August 1861: The Department of Northeastern Virginia was discontinued, and incorporated into the Department of the Potomac.

Department of the Potomac

17 August 1861-27 June 1865

Irvin McDowell interim 17 August 1861-19 August 1861

George Brinton McClellan 17 August 1861-4 November 1862 interim 6 November 1862

Ambrose Everett Burnside 5 November 1862-24 January 1863 interim 25 January 1863

Joseph Hooker 25 January 1863-26 June 1863 interim 27 June 1863

George Gordon Meade 27 June 1863-19 December 1863

John Grubb Parke temporary 20 December 1864-10 January 1865

George Gordon Meade 11 January 1865-27 June 1865

17 August 1861: The Department of the Potomac was established, comprising the states of Delaware and Maryland, the District of Columbia, the Shenandoah Valley in Virginia, and Virginia east of the Allegheny Mountains and north of the James River, except for a 60-mile radius around Fort Monroe. Its territory was taken from the Department of Pennsylvania, the Department of Washington, the Department of the Shenandoah, and the Department of Northeastern Virginia.

17 August 1861: The Department of Pennsylvania was discontinued, and incorporated into the Department of the Potomac. Pennsylvania remained under independent state command.

17 August 1861: The Department of the Shenandoah was discontinued, and incorporated into the Department of the Potomac.

17 August 1861: The Department of Washington was discontinued, and incorporated into the Department of the Potomac.

17 August 1861: Major-General George Brinton McClellan was appointed to command the Department of the Potomac, arriving on 20 August 1861.

17 August 1861: Major-General Irvin McDowell retained interim command of the Department of the Potomac.

20 August 1861: Major-General George Brinton McClellan arrived to command the Department of the Potomac, succeeding Brigadier-General Irvin McDowell.

20 August 1861:  The Army of the Potomac transferred to the Department of the Potomac from the Department of Northeastern Virginia.

20 October 1861: The District of Harper’s Ferry and Cumberland was established in the Department of the Potomac, responsible for the railroad from Harper’s Ferry, Virginia, to Cumberland, Maryland, including a strip of land twenty miles wide along the south bank of the Potomac River.

9 November 1861: The territory of Virginia west of the Blue Ridge Mountains transferred to the Department of Western Virginia from the Department of the Potomac.

1 February 1862: The state of New Jersey transferred from the Department of New York to the Department of the Potomac.

1 February 1862: The state of Pennsylvania was incorporated into the Department of the Potomac.

3 March 1862: The territory west of Flintstone Creek, Maryland, South Branch Mountain, North Shenandoah Mountain, Purgatory Mountain, Blue Ridge Mountain and Allegheny Mountain transferred from the Department of the Potomac to the Department of Western Virginia.

12 March 1862: The District of Harper’s Ferry and Cumberland was discontinued.

12 March 1862: The Military District of Washington was established as an independent command under the War Department, comprising the District of Columbia, Alexandria in Virginia, and Port Washington.

17 March 1862: Major-General George Brinton McClellan was temporarily suspended as General-in-Chief of the US Army, permitting him to exercise direct field command of the Amy of the Potomac.

22 March 1862: New Jersey, Pennsylvania, Delaware, the Eastern Shore of Maryland and of Virginia, and Cecil, Hartford, Baltimore, and Anne Arundel counties of Maryland transferred from the Department of the Potomac to the Middle Department.

4 April 1862: Virginia east of the Blue Ridge and west of the Fredericksburg & Richmond Railroad, Washington and the District of Columbia and the part of Maryland between the Potomac and Patuxent Rivers, transferred from the Department of the Potomac.

4 April 1862: The territory of Maryland between the Potomac and Patuxent Rivers, the District of Columbia and Virginia east of the Blue Ridge Mountains and west of the Fredericksburg & Richmond Railroad transferred from the Department of the Potomac to the Department of the Rappahannock.

4 April 1862: The parts of Maryland and Virginia west of the Blue Ridge Mountains and east of the Mountain Department transferred from the Department of the Potomac to the Department of the Shenandoah.

1 June 1862: The parts of Virginia south of the Rappahannock River and east of the Fredericksburg & Richmond Railroad transferred from the Department of the Potomac to the Department of Virginia.

1 June 1862: The territory of north-eastern Virginia transferred from the Department of the Potomac to the Department of the Rappahannock.

2 September 1862: The Army of Virginia transferred to the Department of the Potomac.

12 September 1862: The Army of Virginia was discontinued, and its forces incorporated into the Army of the Potomac.

19 September 1862: Western Virginia transferred from the Department of the Potomac to the Department of the Ohio.

5 November 1862: Major-General Ambrose Everett Burnside was appointed to command the Department of the Potomac, arriving on 7 November 1862.

7 November 1862: Major-General Ambrose Everett Burnside arrived to command the Department of the Potomac, succeeding Major-General George Brinton McClellan.

25 January 1863: Major-General Joseph Hooker was appointed to command the Department of the Potomac, arriving on 26 January 1863.

26 January 1863: Major-General Joseph Hooker arrived to command the Department of the Potomac, succeeding Major-General Ambrose Everett Burnside.

2 February 1863: The country north of the Potomac River in Maryland from Piscataway Creek to Annapolis Junction, to the mouth of the Monocacy River and south by Goose Creek and the mouth of the Bull Run Mountains to the mouth of the Occoquan Creek, transferred from the Department of the Potomac to the Department of Washington.

27 June 1863: Major-General George Gordon Meade was appointed to command the Department of the Potomac, to succeed Major-General Joseph Hooker, arriving on 28 June 1863.

28 June 1863: Major-General George Gordon Meade arrived to command the Department of the Potomac, succeeding Major-General Joseph Hooker.

3 August 1863: The territory of Maryland west of the Monocacy River and the territory around Harper’s Ferry transferred from the Middle Department and the Department of the Potomac to the Department of West Virginia.

13 April 1864: IX Corps Ohio transferred from the Army of the Ohio to the Department of the Potomac.

24 May 1864: IX Corps Potomac transferred from the Department of the Potomac to the Army of the Potomac.

21 June 1864: The part of Maryland between the Potomac and Patuxent Rivers transferred from the Department of the Potomac to the Department of Washington.

20 December 1864: Major-General John Grubb Parke assumed temporary command of the Department of the Potomac, succeeding Major-General George Gordon Meade.

11 January 1865: Major-General George Gordon Meade assumed command of the Department of the Potomac, succeeding Major-General John Grubb Parke.

26 March 1865: Sheridan’s Cavalry Command was established in the Department of the Potomac.

19 April 1865: The Department of the Potomac transferred to the Military Division of the James.

19 April 1865: Major-General George Gordon Meade retained command of the Department of the Potomac.

6 May 1865: Sheridan’s Cavalry Command Potomac was discontinued.

27 June 1865: The Army of the Potomac transferred from the Department of the Potomac to the Military Division of the Atlantic.

27 June 1865: The Department of the Potomac was discontinued, and its territory incorporated into the Middle Department.

Department of the Rappahannock Virginia

4 April 1862-26 June 1862

Irvin McDowell 4 April 1862-26 June 1862

4 April 1862: The Department of the Rappahannock was established, comprising the portion of Virginia east of the Blue Ridge and west of the Fredericksburg & Richmond Railroad, Washington and the District of Columbia and the part of Maryland between the Potomac and Patuxent Rivers, transferred from the Department of the Potomac.

4 April 1862: I Corps Potomac was discontinued, and its forces were incorporated into the Department of the Rappahannock.

4 April 1862: Major-General Irvin McDowell assumed command of the Department of the Rappahannock.

4 April 1862: The Military District of Washington transferred to the Department of the Rappahannock.

1 June 1862: The territory of Northeastern Virginia transferred from the Department of the Potomac to the Department of the Rappahannock.

8 June 1862: The Piedmont region and the Bull Run Mountains of Virginia transferred from the Department of the Rappahannock to the Department of the Shenandoah.

26 June 1862: The Military District of Washington transferred from the Department of the Rappahannock and transferred to the War Department.

26 June 1862: The Department of the Rappahannock was discontinued.

Department of the Shenandoah #1

19 July 1861-17 August 1861

Nathaniel Prentiss Banks 19 July 1861-17 August 1861

19 July 1861: The Department of the Shenandoah was established, comprising the Shenandoah Valley of Virginia, taken from the Department of the East.

19 July 1861: Major-General Nathaniel Prentiss Banks was appointed to command the Department of the Shenandoah, arriving on 25 July 1861.

19 July 1861: The remainder of Kentucky and the state of Tennessee not already assigned were detached from the Department of the East and assigned to the Department of the Shenandoah.

25 July 1861: Washington and Allegheny counties of Maryland transferred from the Department of Pennsylvania to the Department of the Shenandoah.

25 July 1861: Major-General Nathaniel Prentiss Banks arrived to command the Department of the Shenandoah.

17 August 1861: The Department of the Shenandoah was discontinued, and its territory incorporated into the Department of the Potomac.

Department of the Shenandoah #2

4 April 1862-26 June 1862

Nathaniel Prentiss Banks 4 April 1862-26 June 1862

4 April 1862: The Department of the Shenandoah was established, comprising Maryland west of the Blue Ridge Mountains and east of the Mountain Department namely, Flintstone Creek, south to Branch Mountain, Town Hill Mountain, Branch Big Ridge Mountain, North Shenandoah Mountain, Purgatory Mountain and Allegheny Mountain. 4 April 1862: The parts of Maryland and Virginia west of the Blue Ridge Mountains and east of the Mountain Department transferred from the Department of the Potomac to the Department of the Shenandoah.

4 April 1862: V Corps Potomac was discontinued, and its forces incorporated into the Department of the Shenandoah.

4 April 1862: Major-General Nathaniel Prentiss Banks was appointed to command the Department of the Shenandoah, arriving on 12 April 1862.

12 April 1862: Major-General Nathaniel Prentiss Banks arrived to command the Department of the Shenandoah.

8 June 1862: The parts of Virginia west of the road running from Williamsport to Martinsburg, Winchester, Strasburg, Harrisonville, Staunton and then south to the Blue Ridge Mountains, transferred from the Department of the Shenandoah to the Mountain Department.

8 June 1862: The Piedmont region and the Bull Run Mountains of Virginia transferred from the Department of the Rappahannock to the Department of the Shenandoah.

26 June 1862: The Department of the Shenandoah was discontinued, and its territory incorporated into the Department of the Potomac.

Department of Virginia #1

22 May 1861-15 July 1863

Benjamin Franklin Butler 22 May 1861-8 August 1861 interim 16 August 1861

John Ellis Wool 9 August 1861-1 June 1862 interim 16 June 1862

John Adams Dix 2 June 1862-5 April 1863

Erasmus Darwin Keyes 6 April 1863-15 July 1863

22 May 1861: The Department of Virginia was established with headquarters at Fortress Monroe, comprising the territory of Virginia within sixty miles of Fort Monroe, detached from the Department of the East. It also assumed authority over any territories of North Carolina and South Carolina to be occupied by Union forces.

22 May 1861: Major-General Benjamin Franklin Butler assumed command of the Department of Virginia.

9 August 1861: Brigadier-General John Ellis Wool was appointed to command the Department of Virginia, arriving on 17 August 1861, to succeed Major-General Benjamin Franklin Butler.

17 August 1861: Brigadier-General John Ellis Wool arrived to command the Department of Virginia, succeeding Major-General Benjamin Franklin Butler.

1 June 1862: The parts of Virginia south of the Rappahannock River and east of the Fredericksburg & Richmond Railroad transferred from the Department of the Potomac to the Department of Virginia.

1 June 1862: Major-General George Brinton McClellan was appointed to command the Department of Virginia but did not arrive to take command.

2 June 1862: Major-General John Adams Dix was appointed to command the Department of Virginia, arriving on 17 June 1861, succeeding Major-General John Ellis Wool.

17 June 1862: Major-General John Adams Dix arrived to command the Department of Virginia, succeeding Major-General Benjamin Franklin Butler.

22 July 1862: VII Corps Virginia was established in the Department of Virginia, comprising forces based at Fortress Monroe, Camp Hamilton, Norfolk, Suffolk, Portsmouth, and Yorktown in Virginia.

3 August 1862: IX Corps transferred from the Army of the Potomac to the Department of Virginia.

16 August 1862: IV Corps Potomac transferred from the Army of the Potomac to the Department of Virginia.

3 September 1862: IX Corps Virginia transferred from the Department of Virginia to the Army of the Potomac.

5 February 1863: IX Corps Potomac transferred from the Army of the Potomac to the Department of Virginia.

17 March 1863: IX Corps transferred from the Department of Virginia to the Department of the Ohio.

6 April 1863: Major-General Erasmus Darwin Keyes assumed command of the Department of Virginia, succeeding Major-General John Adams Dix.

15 July 1863: IV Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

15 July 1863: VII Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

15 July 1863: The Department of Virginia was discontinued, and its territory incorporated into the Department of Virginia and North Carolina.

Department of Virginia #2

18 January 1865-31 December 1865

Edward Otho Cresap Ord 18 January 1865-13 May 1865

Alfred Howe Terry temporary 13 May 1865-14 June 1865, 14 June 1865-31 December 1865

18 January 1865: The Department of Virginia was established, comprising the territory within 60 miles of Fort Monroe, Northampton and Accomac counties, Virginia south of the Rappahannock River and east of the Fredericksburg–Richmond–Petersburg–Weldon Railroad.

18 January 1865: Major-General Edward Otho Cresap Ord was appointed to command the Department of Virginia, arriving on 22 January 1865.

18 January 1865: The District of Eastern Virginia transferred from the Department of Virginia and North Carolina to the Department of Virginia.

18 January 1865: The Sub-District of Beaufort North Carolina transferred from the Department of Virginia and North Carolina to the Department of Virginia.

18 January 1865: The state of North Carolina transferred temporarily from the discontinued Department of Virginia and North Carolina to the Department of the South, pending the re-establishment of the Department of North Carolina on 31 January 1865.

18 January 1865: The Sub-District of New Bern transferred from the Department of Virginia and North Carolina to the Department of Virginia.

18 January 1865: The Army of the James transferred interim from the Department of Virginia and North Carolina to the Department of Virginia.

18 January 1865: Terry’s Provisional Corps transferred interim from the Department of Virginia and North Carolina to the Department of Virginia.

22 January 1865: Major-General Edward Otho Cresap Ord arrived to command the Department of Virginia.

31 January 1865: The Sub-District of Beaufort North Carolina transferred from the Department of Virginia to the District of North Carolina.

31 January 1865: Terry’s Provisional Corps transferred from the Department of Virginia to the Department of North Carolina.

31 January 1865: The District of Virginia was established in the Department of Virginia.

31 January 1865: The Sub-District of New Bern was discontinued, and its territory transferred to the District of North Carolina.

31 January 1865: The Army of the James transferred officially to the Department of Virginia.

25 March 1865: The District of Lynchburg was established in the Department of Virginia. It comprised the counties of Nelson, Amherst, Bedford, Campbell, Appomattox, Pittsylvania, Henry and Patrick counties of Virginia.

13 April 1865: The District of the Peninsula was established in the Department of Virginia. It comprised the territory between the York and James Rivers.

16 April 1865: Major-General Henry Wager Halleck was appointed to command the Department of Virginia but did not arrive to take command.

16 April 1865: Major-General Edward Otho Cresap Ord retained command of the Department of Virginia.

19 April 1865: The Department of Virginia transferred to the Military Division of the James.

27 April 1865: The District of the Peninsula was discontinued, and its territory transferred to the Sub-District of the Peninsula in the District of Eastern Virginia.

13 May 1865: Major-General Alfred Howe Terry assumed interim temporary command of the Department of Virginia, succeeding Major-General Edward Otho Cresap Ord.

21 May 1865: The District of Fort Monroe was established in the Department of Virginia.

22 May 1865: The District of the Nottoway was established in the Department of Virginia.

25 May 1865: The District of Henrico was established in the Department of Virginia.

25 May 1865: The Sub-District of The Blackwater was established in the District of the Nottoway in the Department of Virginia.

25 May 1865: The Sub-District of Roanoke was established in the District of the Nottoway.

25 May 1865: The Sub-District of the Appomattox was established in the District of the Nottoway in the Department of Virginia.

25 May 1865: The Sub-District of the Peninsula transferred from the District of Eastern Virginia to the District of Fort Monroe.

25 May 1865: The Sub-District of the Rappahannock was established in the Department of Virginia.

25 May 1865: The Sub-District of the South Anna was established in the Department of Virginia.

14 June 1865: Brigadier-General Alfred Howe Terry assumed full command of the Department of Virginia.

27 June 1865: The Department of Virginia transferred from the Military Division of the James to the Military Division of the Atlantic. It was reorganised to comprise Virginia except for Alexandria, Fairfax and Loudoun counties and the Shenandoah Valley south of and including Rockingham County, transferred from the Department of the Potomac.

27 June 1865: Major-General Alfred Howe Terry retained command of the Department of Virginia.

10 July 1865: The District of Northeastern Virginia was established in the Department of Virginia.

13 July 1865: The District of Lynchburg was discontinued.

13 July 1865: Manchester County, Virginia, was added to the District of Henrico.

13 July 1865: The District of Southwestern Virginia was established in the Department of Virginia.

16 July 1865: The Sub-District of Roanoke was discontinued.

16 July 1865: The Sub-District of the Rappahannock was discontinued, and its territory incorporated into the District of Northeastern Virginia.

1 August 1865: The District of the Nottoway was discontinued.

1 August 1865: The Sub-District of The Blackwater transferred from the District of the Nottoway to the Department of Virginia.

1 August 1865: The Sub-District of the Appomattox transferred from the District of the Nottoway to the Department of Virginia.

1 August 1865: The Army of the James was discontinued.

11 August 1865: The Sub-District of the Appomattox was discontinued.

24 August 1865: The District of Eastern Virginia was discontinued.

29 August 1865: The Sub-District of the Peninsula was discontinued.

19 September 1865: The Sub-District of The Blackwater was discontinued.

Department of Virginia and North Carolina

15 July 1863-18 January 1865

John Gray Foster 15 July 1863-28 August 1863

Benjamin Franklin Butler 28 August 1863-26 July 1864

Edward Otho Cresap Ord temporary 27 July 1864-26 August 1864, 27 August 1864-4 September 1864

David Bell Birney temporary 5 September 1864-September 1864

Benjamin Franklin Butler 7 September 1864-13 December 1864

Edward Otho Cresap Ord temporary 14 December 1864-23 December 1864

Benjamin Franklin Butler 24 December 1864-18 January 1865

15 July 1863: The Department of Virginia and North Carolina was established with headquarters at Fortress Monroe, comprising the territories formerly under the authority of Department of North Carolina and the Department of Virginia.

15 July 1863: The Department of North Carolina was discontinued, and its territory incorporated into the Department of Virginia and North Carolina.

15 July 1863: The Department of Virginia was discontinued, and its territory transferred to the Department of Virginia and North Carolina.

15 July 1863: The District of Albemarle transferred from the Department of North Carolina to the Department of Virginia and North Carolina.

15 July 1863: The District of Beaufort North Carolina transferred from the Department of North Carolina to the Department of Virginia and North Carolina.

15 July 1863: The District of the Pamlico transferred from the Department of North Carolina to the Department of Virginia and North Carolina.

15 July 1863: IV Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

15 July 1863: VII Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

15 July 1863: IV Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

15 July 1863: VII Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

15 July 1863: Major-General John Gray Foster appointed to command the Department of Virginia and North Carolina, arriving on 18 July 1863.

18 July 1863: Major-General John Gray Foster arrived to command the Department of Virginia and North Carolina.

18 July 1863: The District of Yorktown was established in the Department of Virginia and North Carolina, comprising the vicinity of Yorktown, Virginia.

21 July 1863: The Defences of New Bern was established in the Department of Virginia and North Carolina, comprising the vicinity of New Bern, North Carolina.

14 August 1863: The District of North Carolina was established in the Department of Virginia and North Carolina, comprising the former District of Albemarle, District of the Pamlico, District of Beaufort and the Defences of New Bern, each of which became a Sub-District of the District of North Carolina.

14 August 1863:  The Sub-District of the Pamlico was established in the District of North Carolina.

14 August 1863: The Defences of New Bern transferred from the Department of Virginia and North Carolina to the District of North Carolina.

14 August 1863: The District of Albemarle was renamed as the Sub-District of Albemarle in the District of North Carolina.

14 August 1863: The District of Beaufort North Carolina was renamed as the Sub-District of Beaufort North Carolina in the District of North Carolina.

16 August 1863: The Army of North Carolina was established in the Department of Virginia and North Carolina.

21 August 1863: The District of Virginia was established in the Department of Virginia and North Carolina, comprising the territory around Fort Monroe, Camp Hamilton, Newport News, Yorktown, Suffolk, Portsmouth, and Norfolk.

21 August 1863: The District of Yorktown was renamed as the Sub-District of Yorktown in the District of Virginia.

21 August 1863: The Sub-District of Yorktown was established in the District of Virginia, comprising the renamed District of Yorktown.

28 August 1863: Major-General Benjamin Franklin Butler assumed command of the Department of Virginia and North Carolina, succeeding Major-General John Gray Foster.

23 September 1863: The Sub-District of Yorktown was discontinued, and renamed as the District of Yorktown in the Department of Virginia and North Carolina.

23 September 1863: The District of Yorktown was established in the Department of Virginia and North Carolina, comprising the territory of the former Sub-District of Yorktown from the District of Virginia.

11 December 1863: The District of Currituck was established in the Department of Virginia and North Carolina, comprising Pungo, Currituck Court House, Coinjack, and Northwest Landing, on the border of Virginia and North Carolina.

21 December 1863: Northampton and Accomac counties of Virginia transferred from the Middle Department to the Department of Virginia and North Carolina.

25 April 1864: The Army of North Carolina was discontinued, and its field forces transferred to the Department of Virginia and North Carolina.

28 April 1864: The Army of the James was established in the Department of Virginia and North Carolina.

17 May 1864: The District of Yorktown was discontinued.

27 May 1864: The District of Eastern Virginia was established in the Department of Virginia and North Carolina.

21 June 1864: St Mary’s county, Maryland, transferred from the Department of Virginia and North Carolina to the Department of Washington.

7 July 1864: The District of St Mary’s transferred from the Department of Virginia and North Carolina to the Department of Washington. It comprised the county of St Mary’s in Maryland and the Point Lookout prison camp.

27 July 1864: Major-General Edward Otho Cresap Ord assumed temporary command of the Department of Virginia and North Carolina, succeeding Major-General Benjamin Franklin Butler.

27 August 1864: Major-General Edward Otho Cresap Ord assumed full command of the Department of Virginia and North Carolina.

5 September 1864: Major-General David Bell Birney assumed temporary command of the Department of Virginia and North Carolina, succeeding Major-General Edward Otho Cresap Ord.

7 September 1864: Major-General Benjamin Franklin Butler assumed command of the Department of Virginia and North Carolina, succeeding Major-General David Bell Birney.

21 October 1864: The District of North Carolina was discontinued.

21 October 1864: The Sub-District of New Bern transferred from the District of North Carolina to the Department of Virginia and North Carolina.

21 October 1864: The Sub-District of Beaufort North Carolina transferred from the District of North Carolina to the Department of Virginia and North Carolina.

14 December 1864: Major-General Edward Otho Cresap Ord assumed temporary command of the Department of Virginia and North Carolina, succeeding Major-General Benjamin Franklin Butler.

24 December 1864: Major-General Benjamin Franklin Butler assumed command of the Department of Virginia and North Carolina, succeeding Major-General Edward Otho Cresap Ord.

6 January 1865: Terry’s Provisional Corps was established in the Department of Virginia and North Carolina, comprising X Corps Virginia and North Carolina.

18 January 1865: The District of Currituck was discontinued.

18 January 1865: The District of Eastern Virginia transferred from the Department of Virginia and North Carolina to the Department of Virginia.

18 January 1865: The Sub-District of Beaufort North Carolina transferred from the Department of Virginia and North Carolina to the Department of Virginia.

18 January 1865: The state of North Carolina transferred temporarily from the discontinued Department of Virginia and North Carolina to the Department of the South, pending the re-establishment of the Department of North Carolina on 31 January 1865.

18 January 1865: The Sub-District of New Bern transferred from the Department of Virginia and North Carolina to the Department of Virginia.

18 January 1865: The Department of Virginia and North Carolina was discontinued, and the territory within 60 miles of Fort Monroe, Northampton, and Accomac counties, Virginia south of the Rappahannock River and east of the Fredericksburg-Richmond-Petersburg-Weldon Railroad transferred to the Department of Virginia.

Department of West Virginia

24 June 1863-27 June 1865

Benjamin Franklin Kelley 24 June 1863-29 February 1864 interim 10 March 1864

Franz Sigel 29 February 1864-19 May 1864 interim 24 May 1864

David Hunter 19 May 1864-25 July 1864 interim 7 August 1864-8 August 1864

Julius Stahel interim 8 August 1864-9 August 1864

George Crook 25 July 1864-7 August 1864, temporary 7 August 1864-1 September 1864, 1 September 1864-21 February 1865

John Dunlap Stevenson temporary 21 February 1865-26 February 1865 interim 27 February 1865

Samuel Sprigg Carroll interim 27 February 1865-28 February 1865

Winfield Scott Hancock 26 February 1865-28 February 1865 interim 1 March 1865

Samuel Sprigg Carroll temporary 28 February 1865-7 March 1865

Winfield Scott Hancock 7 March 1865-19 March 1865

George Crook temporary 19 March 1865-22 March 1865

Winfield Scott Hancock 22 March 1865-22 April 1865 interim 24 April 1865

William Hemsley Emory temporary 24 April 1865-27 June 1865

24 June 1863: The Department of West Virginia was established, comprising western Virginia south of Ohio County and west of Hancock, Maryland, including the adjacent counties in Ohio.

24 June 1863: The Ohio counties south of Belmont and neighbouring western Virginia transferred from the Department of the Ohio to the Department of West Virginia.

24 June 1863: Brigadier-General Benjamin Franklin Kelley was appointed to command the Department of West Virginia, arriving on 28 June 1863.

28 June 1863: Brigadier-General Benjamin Franklin Kelley arrived to command the Department of West Virginia.

2 July 1863: The Army of the Kanawha was established in the Department of West Virginia.

3 August 1863: The territory of Maryland west of the Monocacy River and the territory around Harper’s Ferry transferred from the Middle Department and the Department of the Potomac to the Department of West Virginia.

12 October 1863: Hancock, Brooke and Ohio counties in West Virginia transferred from the Department of the Monongahela to the Department of West Virginia.

12 October 1863: The counties of Columbiana, Belmont and Jefferson in Ohio transferred from the Department of the Monongahela to the Department of West Virginia.

12 January 1864: Alton, Illinois. The counties of Hancock, Brooke and Ohio in West Virginia transferred from the Department of West Virginia to the Northern Department.

29 February 1864: Major-General Franz Sigel was appointed to command the Department of West Virginia arriving on 10 March 1864.

10 March 1864: Major-General Franz Sigel arrived to command the Department of West Virginia.

19 May 1864: Major-General David Hunter was appointed to command the Department of West Virginia, arriving on 21 May 1864, to succeed Major-General Franz Sigel.

21 May 1864: Major-General David Hunter arrived to command the Department of West Virginia, succeeding Major-General Franz Sigel.

21 May 1864: The Army of the Shenandoah was established in the Department of West Virginia.

20 May 1864: The District of Harper’s Ferry was established in the Department of West Virginia, comprising the line of the Baltimore & Ohio Railroad from Monocacy to Hancock, Maryland.

3 July 1864: The Army of the Shenandoah was discontinued, and part of its forces incorporated into the Army of the Kanawha.

25 July 1864: Brigadier-General George Crook was appointed to temporary command of the Department of West Virginia, arriving on 9 August 1864.

7 August 1864: The Department of West Virginia transferred to the Middle Military Division.

7 August 1864: Major-General David Hunter retained interim command of the Department of West Virginia.

8 August 1864: Major-General Julius Stahel assumed interim command of the Department of West Virginia.

succeeding Major-General David Hunter, pending the arrival of Brigadier-General George Crook.

8 August 1864: The Army of the Kanawha was discontinued, and its forces transferred to the Army of West Virginia. 8 August 1864: The Army of West Virginia was established in the Department of West Virginia.

9 August 1864: Brigadier-General George Crook arrived to temporary command of the Department of West Virginia, succeeding Major-General Julius Stahel.

30 August 1864: Brigadier-General George Crook assumed full command of the Department of West Virginia, arriving on 1 September 1864.

1 September 1864: Brigadier-General George Crook arrived to full command of the Department of West Virginia.

19 December 1864: The Army of West Virginia was discontinued.

21 February 1865: Brigadier-General John Dunlap Stevenson assumed temporary command of the Department of West Virginia, succeeding Major-General George Crook.

25 February 1865: The District of Harper’s Ferry was discontinued.

26 February 1865: Major-General Winfield Scott Hancock was appointed to command the Department of West Virginia, arriving on 28 February 1865, to succeed Brigadier-General John Dunlap Stevenson.

27 February 1865: Brigadier-General Samuel Sprigg Carroll assumed interim command of the Department of West Virginia, succeeding Brigadier-General John Dunlap Stevenson interim pending the arrival of Major-General Winfield Scott Hancock.

28 February 1865: Major-General Winfield Scott Hancock arrived to assume command of the Department of West Virginia, but proceeded on to assume command of the Middle Military Division and delegated the Department to Brigadier-General Samuel Sprigg Carroll.

28 February 1865: Brigadier-General Samuel Sprigg Carroll assumed temporary command of the Department of West Virginia, arriving on 1 March 1865, after a period of interim command.

1 March 1865: Brigadier-General Samuel Sprigg Carroll arrived to temporary command the Department of West Virginia, succeeding Major-General Winfield Scott Hancock.

7 March 1865: Major-General Winfield Scott Hancock assumed command of the Department of West Virginia, succeeding Brigadier-General Samuel Sprigg Carroll.

19 March 1865: Major-General George Crook assumed temporary command of the Department of West Virginia, succeeding Major-General Winfield Scott Hancock.

22 March 1865: Major-General Winfield Scott Hancock assumed command of the Department of West Virginia, succeeding Major-General George Crook.

22 April 1865: Brigadier-General William Hemsley Emory was appointed to temporary command of the Department of West Virginia, arriving on 24 April 1865, to succeed Major-General William Scott Hancock.

24 April 1865: Brigadier-General William Hemsley Emory arrived to temporary command of the Department of West Virginia, succeeding Major-General Winfield Scott Hancock.

27 June 1865: The Department of West Virginia was discontinued, and its territory was incorporated into the Middle Department and the Department of the Ohio.

Department of Western Virginia

19 September 1861-11 March 1862

William Starke Rosecrans 19 September 1861-11 March 1862

19 September 1861: The Department of Western Virginia was established, comprising Virginia west of the Blue Ridge Mountains. Its territory was taken from the Department of the East and the Department of the Ohio supplemented on 9 November 1861 from the Department of the Potomac.

19 September 1861: Brigadier-General William Starke Rosecrans was appointed to command the Department of Western Virginia, arriving on 11 October 1861.

11 October 1861: The District of the Kanawha was established in the Department of Western Virginia.

11 October 1861: Brigadier-General William Starke Rosecrans arrived to command the Department of Western Virginia.

9 November 1861: The territory of Virginia west of the Blue Ridge Mountains transferred to the Department of Western Virginia from the Department of the Potomac.

19 December 1861: The Cheat Mountain District was established in the Department of Western Virginia, comprising the vicinity of Beverly, Elkwater and Huttonsville.

20 December 1861: The Railroad District was established in the Department of Western Virginia, comprising the territory of the former District of Grafton in the Department of the Ohio and all railroads in western Virginia.

3 March 1862: The territory west of Flintstone Creek, Maryland, South Branch Mountain, North Shenandoah Mountain, Purgatory Mountain, Blue Ridge Mountain, and Allegheny Mountain transferred from the Department of the Potomac to the Department of Western Virginia.

11 March 1862: The Department of Western Virginia was discontinued and its territory transferred to the Mountain Department.

District of Alexandria, Virginia

2 February 1863-20 July 1865

John Potts Slough 2 February 1863-21 November 1864

Henry Horatio Wells temporary 21 November 1864-1 January 1865

John Potts Slough 1 January 1865-26 April 1865

John Grubb Parke 26 April 1865-7 June 1865

John Potts Slough 7 June 1865-20 July 1865

2 February 1863: The District of Alexandria was established in the Department of Washington, comprising the vicinity of Alexandria, Virginia.

2 February 1863: Brigadier-General John Potts Slough assumed command of the District of Alexandria.

21 November 1864: Colonel Henry Horatio Wells assumed temporary command of the District of Alexandria, succeeding Brigadier-General John Potts Slough.

1 January 1865: Brigadier-General John Potts Slough assumed command of the District of Alexandria, succeeding Colonel Henry Horatio Wells.

26 April 1865: Major-General John Grubb Parke assumed command of the District of Alexandria, succeeding Brigadier-General John Potts Slough.

7 June 1865: Brigadier-General John Potts Slough assumed command of the District of Alexandria, succeeding Major-General John Grubb Parke.

20 July 1865: The District of Alexandria was discontinued.

Cheat Mountain District, Virginia #1

24 July 1861-19 September 1861

Joseph Jones Reynolds 24 July 1861-19 September 1861

24 July 1861: The Cheat Mountain District was established in the Department of the Ohio, comprising the vicinity of Cheat Mountain, Virginia.

24 July 1861: Brigadier-General Joseph Jones Reynolds assumed command of the Cheat Mountain District.

19 September 1861: The Cheat Mountain District was discontinued.

Cheat Mountain District, Virginia #2

19 December 1861-26 June 1862

Robert Huston Milroy 19 December 1861-12 April 1862

Thomas Maley Harris 12 April 1862-26 June 1862

19 December 1861: The Cheat Mountain District was re-established in the Department of Western Virginia, comprising the vicinity of Beverly, Elkwater and Huttonsville.

19 December 1861: Brigadier-General Robert Huston Milroy assumed command of the Cheat Mountain District.

11 March 1862: The Cheat Mountain District transferred from the Department of Western Virginia to the Mountain Department, comprising all the territory west of the Allegheny Mountains south of the Baltimore & Ohio Railroad, east of the Summerville-Weston Road and north of the Gauley River.

11 March 1862: Brigadier-General Robert Huston Milroy retained command of the Cheat Mountain District.

12 April 1862: Lieutenant-Colonel Thomas Maley Harris assumed command of the Cheat Mountain District, succeeding Brigadier-General Robert Huston Milroy.

26 June 1862: The Cheat Mountain District was discontinued.

Cheat Mountain District, Virginia #3

24 September 1862-13 November 1862

Robert Huston Milroy 24 September 1862-13 November 18621863

24 September 1862: The Cheat Mountain District was re-established in the Department of the Ohio, comprising the vicinity of Cheat Mountain, Virginia.

24 September 1862: Brigadier-General Robert Huston Milroy assumed command of the Cheat Mountain District.

13 November 1862: The Cheat Mountain District in the Department of the Ohio was discontinued.

Cheat River District, Virginia

25 July 1861-4 September 1861

Charles John Biddle 25 July 1861-19 August 1861

Henry Washington Benham 20 August 1861-4 September 1861

25 July 1861: The Cheat River District was established in the Department of the Ohio, comprising the territories of Tygart’s Valley and the Cheat River in Virginia.

25 July 1861: Colonel Charles John Biddle assumed command of the Cheat River District.

20 August 1861: Brigadier-General Henry Washington Benham assumed command of the Cheat River District, succeeding Colonel Charles John Biddle.

4 September 1861: The Cheat River District was discontinued.

District of Cumberland, Virginia

11 March 1862-7 April 1862

Robert Cumming Schenck 11 March 1862-7 April 1862

11 March 1862: The District of Cumberland was established in the Mountain Department, comprising the territory east of the Allegheny Mountains controlled by the Mountain Department.

11 March 1862: Brigadier-General Robert Cumming Schenck assumed command of the District of Cumberland.

7 April 1862: The District of Cumberland was discontinued.

District of Fort Monroe, Virginia

21 May 1865-31 December 1865

Nelson Appleton Miles 21 May 1865-31 December 1865

21 May 1865: The District of Fort Monroe was established in the Department of Virginia. It comprised Fort Monroe and the counties of Accomac and Northampton.

21 May 1865: Brigadier-General Nelson Appleton Miles assumed command of the District of Fort Monroe.

25 May 1865: The Sub-District of the Peninsula transferred from the District of Eastern Virginia to the District of Fort Monroe. It was redefined to include the counties of Mathews, Gloucester, New Kent, King William, Charles City, James City, York, Warwick, and Elizabeth City in Virginia, except for Fort Monroe.

District of the Gap, Virginia

11 March 1862-26 June 1862

Samuel Powhatan Carter 11 March 1862-26 June 1862

11 March 1862: The District of the Gap was established in the Mountain Department. It consisted of the territory west of the valley of the Big Sandy River within the Mountain Department. It was controlled operationally by the Army of the Ohio.

11 March 1862: Lieutenant USN Samuel Powhatan Carter assumed command of the District of the Gap.

26 June 1862: The District of the Gap was discontinued.

District of Grafton, Virginia

3 August 1861-20 December 1861

Benjamin Franklin Kelley 3 August 1861-20 December 1861

3 August 1861: The District of Grafton was established in the Department of the Ohio, comprising the line of the Baltimore & Ohio Railroad from Cumberland, Maryland, to Wheeling, Virginia, and the Northwestern Virginia Railroad from Grafton to Parkersburg, Virginia.

3 August 1761: Brigadier-General Benjamin Franklin Kelley assumed command of the District of Grafton.

20 December 1861: The District of Grafton was discontinued, and its territory transferred to the Railroad District in the Department of Western Virginia.

District of Harper’s Ferry, West Virginia

24 May 1864-25 February 1865

Franz Sigel 24 May 1864-7 July 1864

Albion Parris Howe 7 July 1864-8 August 1864

Max Weber 8 August 1864-15 August 1864

John Dunlap Stevenson 15 August 1864-21 February 1865

William Henry Seward 21 February 1865-25 February 1865

20 May 1864: The District of Harper’s Ferry was established in the Department of West Virginia, comprising the line of the Baltimore & Ohio Railroad from Monocacy to Hancock, Maryland.

20 May 1864: Major-General Franz Sigel assumed command of the District of Harper’s Ferry.

7 July 1864: Brigadier-General Albion Parris Howe assumed command of the District of Harper’s Ferry, succeeding Major-General Franz Sigel.

8 August 1864: Brigadier-General Max Weber assumed command of the District of Harper’s Ferry, succeeding Brigadier-General Albion Parris Howe.

15 August 1864: Brigadier-General John Dunlap Stevenson assumed command of the District of Harper’s Ferry, succeeding Brigadier-General Max Weber.

21 February 1865: Brigadier-General William Henry Seward assumed command of the District of Harper’s Ferry, succeeding Brigadier-General John Dunlap Stevenson.

25 February 1865: The District of Harper’s Ferry was discontinued.

District of Harper’s Ferry and Cumberland, Virginia

20 October 1861-12 March 1862

Frederick West Lander 20 October 1861-21 October 1861

Benjamin Franklin Kelley temporary 22 October 1861-30 November 1861

Frederick West Lander 1 December 1861-1 March 1862

James Shields 2 March 1862-12 March 1862

20 October 1861: The District of Harper’s Ferry and Cumberland was established in the Department of the Potomac, responsible for the railroad from Harper’s Ferry, Virginia, to Cumberland, Maryland, including a strip of land twenty miles wide along the south bank of the Potomac River.

20 October 1861: Brigadier-General Frederick West Lander assumed command of the District of Harper’s Ferry and Cumberland.

22 October 1861: Brigadier-General Benjamin Franklin Kelley assumed temporary command of the District of Harper’s Ferry and Cumberland, succeeding Brigadier-General Frederick West Lander.

1 December 1861: Brigadier-General Frederick West Lander assumed command of the District of Harper’s Ferry and Cumberland, succeeding Brigadier-General Benjamin Franklin Kelley.

2 March 1862: Brigadier-General James Shields assumed temporary command of the District of Harper’s Ferry and Cumberland, succeeding the late Brigadier-General Frederick West Lander.

12 March 1862: The District of Harper’s Ferry and Cumberland was discontinued.

District of Henrico, Virginia

25 May 1865-27 June 1865

Marsena Rudolph Patrick 25 May 1865-9 June 1865

John Wesley Turner 9 June 1865-31 December 1865

25 May 1865: The District of Henrico was established in the Department of Virginia, to comprise Henrico County, Virginia.

25 May 1865: Brigadier-General Marsena Rudolph Patrick assumed command of the District of Henrico.

9 June 1865: Brigadier-General John Wesley Turner assumed command of the District of Henrico, succeeding Major-General Marsena Rudolph Patrick.

13 July 1865: Manchester County, Virginia, was added to the District of Henrico.

District of the Kanawha, Virginia

11 October 1861-26 June 1862

Jacob Dolson Cox 11 October 1861-26 June 1862

11 October 1861: The District of the Kanawha was established in the Department of Western Virginia, comprising Point Pleasant, Buffalo, Charleston, Gauley Bridge, Summerville, and Fayetteville.

11 October 1861: Brigadier-General Jacob Dolson Cox assumed command of the District of the Kanawha.

11 March 1862: The District of the Kanawha transferred from the Department of Western Virginia to the Mountain Department, comprising the valleys of the Kanawha, New and Guyandotte Rivers and the mouth of the Big Sandy River.

11 March 1862: The District of the Kanawha transferred from the Department of Western Virginia to the Mountain Department, comprising the valleys of the Kanawha, New and Guyandotte Rivers and the mouth of the Big Sandy River.

11 March 1862: Brigadier-General Jacob Dolson Cox retained command of the District of the Kanawha.

26 June 1862: The District of the Kanawha was discontinued.

District of Lynchburg, Virginia

25 March 1865-13 July 1865

John Irvin Gregg 25 March 1865-13 July 1865

25 March 1865: The District of Lynchburg was established in the Department of Virginia. It comprised the counties of Nelson, Amherst, Bedford, Campbell, Appomattox, Pittsylvania, Henry and Patrick counties of Virginia.

25 March 1865: Colonel John Irvin Gregg assumed command of the District of Lynchburg.

13 July 1865: The District of Lynchburg was discontinued.

District of the Northern Neck, Virginia

26 April 1865-18 May 1865

Nelson Bowman Sweitzer 26 April 1865-18 May 1865

26 April 1865: The District of the Northern Neck was established in the Department of Washington. It comprised the territory between the Potomac and Rappahannock rivers and south of the Fredericksburg & Aquia Railroad.

26 April 1865: Colonel Nelson Bowman Sweitzer assumed command of District of the Northern Neck.

18 May 1865: The District of the Northern Neck was discontinued and tis territory transferred to the District of Washington.

District of the Nottoway, Virginia

22 May 1865-1 August 1865

George Lucas Hartsuff 22 May 1865-1 August 1865

22 May 1865: The District of the Nottoway was established in the Department of Virginia. It comprised the counties south of Petersburg.

22 May 1865: Major-General George Lucas Hartsuff assumed command of the District of the Nottoway.

25 May 1865: The Sub-District of The Blackwater was established in the District of the Nottoway. It comprised the counties of Sussex, Surrey, Greenville, Brunswick, Dinwiddie, and Price George in Virginia.

25 May 1865: The Sub-District of Roanoke was established in the District of the Nottoway. It comprised the counties of Mecklenburg, Lunenburg, Prince Edward, Nottoway, Charlotte, and Halifax in Virginia.

25 May 1865: The Sub-District of the Appomattox was established in the District of Nottoway in the Department of Virginia. It comprised the counties of Chesterfield, Amelia, Powhatan, Cumberland, and Buckingham in Virginia.

1 August 1865: The Sub-District of The Blackwater transferred from the District of the Nottoway to the Department of Virginia.

1 August 1865: The Sub-District of the Appomattox transferred from the District of the Nottoway to the Department of Virginia.

1 August 1865: The District of the Nottoway was discontinued.

District of Patuxent, Virginia

26 April 1865-18 May 1865

Henry Horatio Wells 26 April 1865-18 May 1865

26 April 1865: The District of Patuxent was established in the Department of Washington. It comprised the territory between the Potomac and Patuxent of Piscataway Creek.

26 April 1865: Colonel Henry Horatio Wells assumed command of the District of Patuxent.

18 May 1865: The District of Patuxent was discontinued.

District of the Peninsula, Virginia

13 April 1865-27 April 1865

Benjamin Chambers Ludlow 13 April 1865-27 April 1865

13 April 1865: The District of the Peninsula was established in the Department of Virginia. It comprised the territory between the York and James Rivers.

13 April 1865: Lieutenant-Colonel Benjamin Chambers Ludlow assumed command of the District of the Peninsula.

27 April 1865: The District of the Peninsula was discontinued, and renamed the Sub-District of the Peninsula in the District of Eastern Virginia.

The Railroad District, Virginia

20 December 1861-26 June 1862

Benjamin Franklin Kelley 20 December 1861-26 June 1862

20 December 1861: The Railroad District was established in the Department of Western Virginia, comprising the territory of the former District of Grafton in the Department of the Ohio and all railroads in western Virginia.

20 December 1861: Brigadier-General Benjamin Franklin Kelley assumed command of the Railroad District.

11 March 1862: The Railroad District transferred from the Department of Western Virginia to the Mountain Department, comprising the lines of the Baltimore & Ohio Railroad in Virginia west of the Allegheny Mountains and was extended to include the vicinity of Grafton, Clarksburg, Parkersburg, and Wheeling, in western Virginia.

11 March 1862: Brigadier-General Benjamin Franklin Kelley retained command of the Railroad District.

26 June 1862: The Railroad District was discontinued.

District of the Valley of the Big Sandy River, Virginia

11 March 1862-8 June 1862

James Abram Garfield 11 March 1862-8 June 1862

11 March 1862: The District of the Valley of the Big Sandy River was established in the Mountain Department.

11 March 1862: Brigadier-General James Abram Garfield assumed command of the District of the Valley of the Big Sandy River.

8 June 1862: The District of the Valley of the Big Sandy River was discontinued.

District of Virginia #1

21 August 1863-23 September 1863

Henry Morris Naglee 21 August 1863-23 September 1863

21 August 1863: The District of Virginia was established in the Department of Virginia and North Carolina, comprising the territory around Fort Monroe, Camp Hamilton, Newport News, Yorktown, Suffolk, Portsmouth, and Norfolk.

21 August 1863: Brigadier-General Henry Morris Naglee assumed command of the District of Virginia.

23 September 1863: The District of Virginia was discontinued, and its territory transferred to the District of Yorktown.

District of Virginia #2

31 January 1865-31 December 1865

Edward Otho Cresap Ord 31 January 1865-31 December 1865

31 January 1865: The District of Virginia was re-established in the Department of Virginia.

31 January 1865: Major-General Edward Otho Cresap Ord assumed command of the District of Virginia.

District of Eastern Virginia

27 May 1864-24 August 1865

George Foster Shepley 27 May 1864-11 February 1865

George Henry Gordon 11 February 1865-24 August 1865

27 May 1864: The District of Eastern Virginia was established in the Department of Virginia and North Carolina.

27 May 1864: Brigadier-General George Foster Shepley assumed command of the District of Eastern Virginia.

18 January 1865: The District of Eastern Virginia transferred from the Department of Virginia and North Carolina to the Department of Virginia.

18 January 1865: Brigadier-General George Foster Shepley retained command of the District of Eastern Virginia.

11 February 1865: Brigadier-General George Henry Gordon assumed command of the District of Eastern Virginia, succeeding Brigadier-General George Foster Shepley.

27 April 1865: The Sub-District of the Peninsula was established in the District of Eastern Virginia.

25 May 1865: The Sub-District of the Peninsula transferred from the District of Eastern Virginia to the District of Fort Monroe.

24 August 1865: The District of Eastern Virginia was discontinued.

District of Northeastern Virginia

10 July 1865-31 December 1865

Charles Devens 10 July 1865-31 December 1865

10 July 1865: The District of Northeastern Virginia was established in the Department of Virginia. It comprised the counties of Loudon, Prince William, Fauquier, Stafford, Rappahannock, Culpeper, Madison, King George, Westmoreland, Northumberland, Richmond, and Lancaster in Virginia.

10 July 1865: Brigadier-General Charles Devens assumed command of the District of Northeastern Virginia

District of Southwestern Virginia

13 July 1865-31 December 1865

Newton Martin Curtis 13 July 1865-31 December 1865

13 July 1865: The District of Southwestern Virginia was established in the Department of Virginia. It comprised 31 counties in south-western Virginia around Lynchburg.

13 July 1865: Brigadier-General Newton Martin Curtis assumed command of the District of Southwestern Virginia.

District of Western Virginia

28 September 1862-16 March 1863

Quincy Adams Gillmore 28 September 1862-4 October 1862

Jacob Dolson Cox 4 October 1862-16 March 1863

28 September 1862: The District of Western Virginia was established in the Department of the Ohio, comprising western Virginia and the counties in Ohio adjacent to Virginia.

28 September 1862: The Sub-District of the Kanawha transferred from the Department of the Ohio to the District of Western Virginia.

28 September 1862: Brigadier-General Quincy Adams Gillmore assumed command of the District of Western Virginia.

4 October 1862: Brigadier-General Jacob Dolson Cox assumed command of the District of Western Virginia, succeeding Brigadier-General Quincy Adams Gillmore.

16 March 1863: The Sub-District of the Kanawha was discontinued.

16 March 1863: The District of Western Virginia was discontinued, and the territory of Western Virginia transferred from the Department of the Ohio to the Middle Department.

District of Yorktown, Virginia #1

18 July 1863-21 August 1863

Isaac Jones Wistar 18 July 1863-21 August 1863

18 July 1863: The District of Yorktown was established in the Department of Virginia and North Carolina, comprising the vicinity of Yorktown, Virginia.

18 July 1863: Brigadier-General Isaac Jones Wistar assumed command of the District of Yorktown.

21 August 1863: The District of Yorktown was discontinued and renamed as the Sub-District of Yorktown in the District of Virginia.

District of Yorktown, Virginia #2

23 September 1863-17 May 1864

Isaac Jones Wistar 23 September 1863-21 December 1863

Robert Mayhew West temporary 22 December 1863-21 January 1864

Isaac Wistar Jones 22 January 1864-15 February 1864

Robert Mayhew West temporary 16 February 1864-7 March 1864

Isaac Jones Wistar 8 March 1864-20 April 1864

William Farrar Smith 21 April 1864-3 May 1864

Joseph Bradford Carr 4 May 1864-17 May 1864

23 September 1863: The District of Yorktown was re-established in the Department of Virginia and North Carolina.

23 September 1863: Brigadier-General Isaac Jones Wistar assumed command of the District of Yorktown.

22 December 1863: Colonel Robert Mayhew West assumed temporary command of the District of Yorktown, succeeding Brigadier-General Isaac Jones Wistar.

22 January 1864: Brigadier-General Isaac Jones Wistar assumed command of the District of Yorktown, succeeding Colonel Robert Mayhew West.

16 February 1864: Colonel Robert Mayhew West assumed temporary command of the District of Yorktown, succeeding Brigadier-General Isaac Jones Wistar.

8 March 1864: Brigadier-General Isaac Jones Wistar assumed command of the District of Yorktown, succeeding Colonel Robert Mayhew West.

21 April 1864: Major-General William Farrar Smith assumed command of the District of Yorktown, succeeding Brigadier-General Isaac Jones Wistar.

4 May 1864: Brigadier-General Joseph Bradford Carr assumed command of the District of Yorktown, succeeding Major-General William Farrar Smith.

17 May 1864: The District of Yorktown was discontinued.

Sub-District of the Appomattox, Virginia

25 May 1865-11 August 1865

Charles Henry Smith 25 May 1865-11 August 1865

25 May 1865: The Sub-District of the Appomattox was established and subordinated to the District of Nottoway in the Department of Virginia. It comprised the counties of Chesterfield, Amelia, Powhatan, Cumberland, and Buckingham in Virginia.

25 May 1865: Colonel Charles Henry Smith assumed command of the Sub-District of the Appomattox.

1 August 1865: The Sub-District of the Appomattox transferred from the District of the Nottoway to the Department of Virginia.

1 August 1865: Colonel Charles Henry Smith retained command of the Sub-District of the Appomattox.

11 August 1865: The Sub-District of the Appomattox was discontinued.

Sub-District of the Blackwater, Virginia

25 May 1865-19 September 1865

Gilbert Hunt McKibbin 25 May 1865-19 September 1865

25 May 1865: The Sub-District of the Blackwater was established and subordinated to the District of the Nottoway in the Department of Virginia. It comprised the counties of Sussex, Surrey, Greenville, Brunswick, Dinwiddie, and Price George in Virginia.

25 May 1865: Captain Gilbert Hunt McKibbin assumed command of the Sub-District of The Blackwater.

1 August 1865: The Sub-District of The Blackwater transferred from the District of the Nottoway to the Department of Virginia.

1 August 1865: Captain Gilbert Hunt McKibbin retained command of the Sub-District of The Blackwater.

19 September 1865: The Sub-District of The Blackwater was discontinued.

Sub-District of the Kanawha, Virginia

19 September 1862-16 March 1863

Joseph Andrew Jackson Lightburn 19 September 1862-15 October 1862

Eliakim Parker Scammon 15 October 1862-16 March 1863

19 September 1862: The Sub-District of the Kanawha was established in the Department of the Ohio.

19 September 1862: Colonel Joseph Andrew Jackson Lightburn assumed command of the Sub-District of the Kanawha.

28 September 1862: The Sub-District of the Kanawha transferred to the District of Western Virginia in the Department of the Ohio.

28 September 1862: Brigadier-General Joseph Andrew Jackson Lightburn retained command of the Sub-District of the Kanawha.

15 October 1862: Brigadier-General Eliakim Parker Scammon assumed command of the Sub-District of the Kanawha, succeeding Colonel Joseph Andrew Jackson Lightburn.

16 March 1863: The Sub-District of the Kanawha was discontinued.

Sub-District of the Peninsula, Virginia

19 April 1865-29 August 1865

Benjamin Chambers Ludlow 27 April 1865-29 August 1865

27 April 1865: The Sub-District of the Peninsula was established in the District of Eastern Virginia from the District of the Peninsula. It was bounded in the north by the York and Pamunkey Rivers, in the east by the Chesapeake Bay, in the south by the James River and in the west by the Richmond, Fredericksburg & Potomac Railroad.

27 April 1865: Colonel Benjamin Chambers Ludlow retained command of the Sub-District of the Peninsula.

25 May 1865: The Sub-District of the Peninsula transferred from the District of Eastern Virginia to the District of Fort Monroe. It was redefined to include the counties of Mathews, Gloucester, New Kent, King William, Charles City, James City, York, Warwick, and Elizabeth City in Virginia, except for Fort Monroe.

25 May 1865: Colonel Benjamin Chambers Ludlow retained command of the Sub-District of the Peninsula.

29 August 1865: The Sub-District of the Peninsula was discontinued.

Sub-District of the Rappahannock, Virginia

25 May 1865-16 July 1865

Edwin Vose Sumner Jr May 25-16 July 1865

25 May 1865: The Sub-District of the Rappahannock was established in the Department of Virginia. It comprised the counties of Middlesex, King and Queen, Essex, Caroline, Spotsylvania, and Orange in Virginia.

25 May 1865: Colonel Edwin Vose Sumner Jr assumed command of the Sub-District of the Rappahannock.

16 July 1865: The Sub-District of the Rappahannock was discontinued, and its territory incorporated into the District of Northeastern Virginia.

Sub-District of Roanoke, Virginia

25 May 1865-16 July 1865

Edward Ferrero 25 May 1865-16 July 1865

25 May 1865: The Sub-District of Roanoke was established in the District of the Nottoway. It comprised the counties of Mecklenburg, Lunenburg, Prince Edward, Nottoway, Charlotte and Halifax in Virginia.

25 May 1865: Brigadier-General Edward Ferrero assumed command of the Sub-District of Roanoke.

16 July 1865: The Sub-District of Roanoke was discontinued.

Sub-District of the South Anna, Virginia

25 May 1865-31 December 1865

Alvin Coe Voris May 25-31 December 1865

25 May 1865: The Sub-District of the South Anna was established in the Department of Virginia. It comprised the counties of Hanover, Louisa, Albemarle, Goochland, Fluvanna, and Greene in Virginia.

25 May 1865: Lieutenant-Colonel Alvin Coe Voris assumed command of the Sub-District of the South Anna.

Sub-District of Yorktown, Virginia

21 August 1863-23 September 1863

Isaac Jones Wistar 21 August 1863-223 September 1863

21 August 1863: The Sub-District of Yorktown was established in the District of Virginia.

21 August 1863: Brigadier-General Isaac Jones Wistar retained command of the Sub-District of Yorktown.

23 September 1863: The Sub-District of Yorktown was discontinued, and renamed as the District of Yorktown in the Department of Virginia and North Carolina.

Army of the James

28 April 1864-1 August 1865

Benjamin Franklin Butler 28 April 1864-7 January 1865

Edward Otho Cresap Ord 8 January 1865-1 August 1865

28 April 1864: The Army of the James was established in the Department of Virginia and North Carolina.

28 April 1864: Major-General Benjamin Franklin Butler assumed command of the Army of the James.

28 April 1864: X Corps South transferred from the Department of the South to the Army of the James.

2 May 1864: XVIII Corps Virginia and North Carolina transferred from the Department of Virginia and North Carolina to the Army of the James.

3 December 1864: X Corps James was discontinued.

3 December 1864: XVIII Corps James was discontinued.

3 December 1864: XXIV Corps was established in the Army of the James.

3 December 1864: XXV Corps was established in the Army of the James by consolidating the black divisions of X Corps and XVIII Corps.

8 January 1865: Major-General Edward Otho Cresap Ord assumed command of the Army of the James, succeeding Major-General Benjamin Franklin Butler.

18 January 1865: The Army of the James transferred interim from the Department of Virginia and North Carolina to the Department of Virginia.

18 January 1865: Major-General Edward Otho Cresap Ord retained command of the Army of the James.

31 January 1865: The Army of the James transferred officially to the Department of Virginia.

31 January 1865: Major-General Edward Otho Cresap Ord retained command of the Army of the James.

26 March 1865: The cavalry of the Army of the James transferred to Sheridan’s Cavalry Command Potomac.

23 May 1865: XXV Corps James transferred from the Army of the James to the Military Division of the Southwest.

1 August 1865: XXIV Corps James was discontinued.

1 August 1865: The Army of the James was discontinued.

Army of the Kanawha

2 July 1863-8 August 1864

George Crook 2 July 1863-8 August 1864

2 July 1863: The Army of the Kanawha was established in the Department of West Virginia.

2 July 1863: Brigadier-General George Crook assumed command of the Army of the Kanawha.

8 August 1864: The Army of the Kanawha was discontinued, and its forces incorporated into the Army of West Virginia.

Army of Northeastern Virginia

8 July 1861-25 July 1861

Irvin McDowell 8 July 1861-25 July 1861

8 July 1861: The Army of Northeastern Virginia was established in the Department of Northeastern Virginia.

8 July 1861: Brigadier-General Irvin McDowell assumed command of the Army of Northeastern Virginia.

25 July 1861: The Army of Northeastern Virginia was discontinued and renamed the Army of the Potomac.

Army of Occupation (Western Virginia)

14 June 1861-19 September 1861

George Brinton McClellan 14 June 1861-22 July 1861

William Starke Rosecrans 23 July 1861-19 September 1861

14 June 1861: The Army of Occupation was established in western Virginia in the Department of the Ohio.

14 June 1861: Major-General George Brinton McClellan assumed command of the Army of Occupation Ohio.

23 July 1861: Brigadier-General William Starke Rosecrans assumed command of the Army of Occupation Ohio, succeeding Major-General George Brinton McClellan.

19 September 1861: The Army of Occupation Ohio was discontinued.

Army of the Potomac

25 July 1861-28 June 1865

Irvin McDowell 25 July 1861-20 August 1861

George Brinton McClellan 20 August 1861-4 November 1862 interim 6 November 1862

Ambrose Everett Burnside 5 November 1862-25 January 1863

Joseph Hooker 26 January 1863-27 June 1863

George Gordon Meade 28 June 1863-31 August 1864

John Grubb Parke temporary 1 September 1864-9 September 1864

George Gordon Meade 10 September 1864-29 December 1864

John Grubb Parke temporary 30 December 1864-10 January 1865

George Gordon Meade 11 January 1865-23 January 1865

John Grubb Parke temporary 24 January 1865-1 February 1865

George Gordon Meade 2 February 1865-21 February 1865

John Grubb Parke temporary 22 February 1865-27 February 1865

George Gordon Meade 28 February 1865-28 June 1865

25 July 1861: The Army of the Potomac was established in the Department of Northeastern Virginia.

25 July 1861: Major-General Irvin McDowell assumed command of the Army of the Potomac.

15 August 1861: The Army of Northeastern Virginia was formally discontinued, having already been re-designated the Army of the Potomac.

17 August 1861: The Army of the Shenandoah was discontinued, and its forces transferred to the Army of the Potomac.

20 August 1861:  The Army of the Potomac transferred to the Department of the Potomac from the Department of Northeastern Virginia.

20 August 1861: Major-General George Brinton McClellan assumed command of the Army of the Potomac, succeeding Major-General Irvin McDowell.

3 March 1862: I Corps Potomac was established in the Army of the Potomac.

3 March 1862: II Corps Potomac was established in the Army of the Potomac.

3 March 1862: III Corps Potomac was established in the Army of the Potomac.

3 March 1862: IV Corps Potomac was established in the Army of the Potomac.

3 March 1862: V Corps Potomac was established in the Army of the Potomac.

17 March 1862: Major-General George Brinton McClellan was temporarily suspended as General-in-Chief of the US Army, permitting him to exercise direct field command of the Amy of the Potomac.

4 April 1862: I Corps Potomac was discontinued, and its forces incorporated into the Department of the Rappahannock.

4 April 1862: V Corps Potomac was discontinued, and its forces incorporated into the Department of the Shenandoah.

18 May 1862: Provisional V Corps Potomac was established in the Army of the Potomac.

18 May 1862: Provisional VI Corps Potomac was established in the Army of the Potomac.

22 July 1862: V Provisional Corps Potomac was confirmed as a permanent organisation as V Corps Potomac.

22 July 1862: VI Provisional Corps Potomac was confirmed as a permanent organisation as VI Corps Potomac.

22 July 1862: IX Corps Potomac was established in the Army of the Potomac.

3 August 1862: IX Corps transferred from the Army of the Potomac to the Department of Virginia.

16 August 1862: IV Corps Potomac transferred from the Army of the Potomac to the Department of Virginia.

3 September 1862: IX Corps Virginia transferred from the Department of Virginia to the Army of the Potomac.

12 September 1862: The Army of Virginia was discontinued, and its forces incorporated into the Army of the Potomac.

12 September 1862:  III Corps Virginia was discontinued, and incorporated into I Corps Potomac.

12 September 1862: I Corps Potomac was established, comprising the discontinued III Corps Army of Virginia.

12 September 1862: I Corps Virginia was discontinued, and incorporated into XI Corps Potomac.

12 September 1862: XI Corps was established in the Army of the Potomac, comprising the discontinued I Corps Virginia.

12 September 1862: II Corps Virginia was discontinued, and incorporated into XII Corps Potomac.

12 September 1862: XII Corps was established in the Army of the Potomac, comprising the discontinued II Corps Virginia.

5 November 1862: Major-General Ambrose Everett Burnside was appointed to command the Army of the Potomac, arriving on 7 November 1862.

7 November 1862: Major-General Ambrose Everett Burnside arrived to command the Army of the Potomac, succeeding Major-General George Brinton McClellan.

14 November 1862: The Army of the Potomac was reorganised into four Grand Divisions.

14 November 1862: The Centre Grand Division was established in the Army of the Potomac to comprise III Corps Potomac and V Corps Potomac.

14 November 1862: The Left Grand Division was established in the Army of the Potomac to comprise I Corps Potomac and VI Corps Potomac.

14 November 1862: The Right Grand Division was established in the Army of the Potomac to comprise II Corps Potomac and IX Corps Potomac.

14 November 1862: The Reserve Grand Division was established in the Army of the Potomac to comprise XI Corps Potomac and XII Corps Potomac.

26 January 1863: Major-General Joseph Hooker assumed command of the Army of the Potomac, succeeding Major-General Ambrose Everett Burnside.

5 February 1863: The Centre Grand Division of the Army of the Potomac was discontinued.

5 February 1863: The Right Grand Division of the Army of the Potomac was discontinued.

5 February 1863: The Left Grand Division of the Army of the Potomac was discontinued.

5 February 1863: The Reserve Grand Division of the Army of the Potomac was discontinued.

5 February 1863: IX Corps Potomac transferred from the Army of the Potomac to the Department of Virginia.

12 February 1863: Cavalry Corps Potomac was established in the Army of the Potomac.

28 June 1863: Major-General George Gordon Meade assumed command of the Army of the Potomac, succeeding Major-General Joseph Hooker.

25 September 1863: XI Corps Potomac transferred from the Army of the Potomac to Hooker’s Command Cumberland.

25 September 1863: XII Corps Potomac transferred from the Army of the Potomac to Hooker’s Command Cumberland.

24 March 1864: I Corps Potomac was discontinued, and its forces allocated to V Corps Potomac.

24 March 1864: III Corps Potomac was discontinued, and its forces allocated to II Corps Potomac and VI Corps Potomac.

24 May 1864: IX Corps transferred from the Department of the Potomac to the Army of the Potomac.

7 August 1864: VI Corps Potomac transferred from the Army of the Potomac to the Army of the Shenandoah.

1 September 1864: Major-General John Grubb Parke assumed temporary command of the Army of the Potomac, succeeding Major-General George Gordon Meade.

10 September 1864: Major-General George Gordon Meade assumed command of the Army of the Potomac, succeeding Major-General John Grubb Parke.

6 December 1864: 6 December 1864: VI Corps Shenandoah transferred from the Army of the Shenandoah to the Army of the Potomac.

30 December 1864: Major-General John Grubb Parke assumed temporary command of the Army of the Potomac, succeeding Major-General George Gordon Meade.

11 January 1865: Major-General George Gordon Meade assumed command of the Army of the Potomac, succeeding Major-General John Grubb Parke.

24 January 1865: Major-General John Grubb Parke assumed temporary command of the Army of the Potomac, succeeding Major-General George Gordon Meade.

2 February 1865: Major-General George Gordon Meade assumed command of the Army of the Potomac, succeeding Major-General John Grubb Parke.

22 February 1865: Major-General John Grubb Parke assumed temporary command of the Army of the Potomac, succeeding Major-General George Gordon Meade.

28 February 1865: Major-General George Gordon Meade assumed command of the Army of the Potomac, succeeding Major-General John Grubb Parke.

26 March 1865: Sheridan’s Cavalry Command was established in the Department of the Potomac. It comprised the combined cavalry forces of the Army of the Potomac, the Army of the James, and the Army of the Shenandoah.

26 March 1865: Cavalry Corps Potomac transferred from the Army of the Potomac to Sheridan’s Cavalry Command Potomac.

6 May 1865: Cavalry Corps Potomac transferred from Sheridan’s Cavalry Command to the Army of the Potomac.

27 June 1865: Cavalry Corps Potomac was discontinued.

27 June 1865: The Army of the Potomac transferred from the Department of the Potomac to the Military Division of the Atlantic.

27 June 1865: Major-General George Gordon Meade retained command of the Army of the Potomac.

28 June 1865: II Corps Potomac was discontinued.

28 June 1865: V Corps Potomac was discontinued.

28 June 1865: VI Corps Potomac was discontinued.

28 June 1865: The Army of the Potomac was discontinued.

Army of the Shenandoah #1

2 June 1861-17 August 1861

Robert Patterson 2 June 1861-27 July 1861

Vacant 27 July 1861-17 August 1861

2 June 1861: The Army of the Shenandoah also known unofficially as the “Army of Pennsylvania” was established in the Department of Pennsylvania.

2 June 1861: Pennsylvania State Major-General Robert Patterson assumed command of the Army of the Shenandoah.

27 July 1861: Command of the Army of the Shenandoah became vacant when Pennsylvania State Major-General Robert Patterson mustered out.

17 August 1861: The Army of the Shenandoah was discontinued, and its forces transferred to the Army of the Potomac.

Army of the Shenandoah #2

21 May 1864-3 July 1864

David Hunter 21 May 1864-3 July 1864

21 May 1864: The Army of the Shenandoah was established in the Department of West Virginia.

21 May 1864: Major-General David Hunter assumed command of the Army of the Shenandoah.

3 July 1864: The Army of the Shenandoah was discontinued, and part of the forces incorporated into the Army of the Kanawha.

Army of the Shenandoah #3

7 August 1864-27 June 1865

Philip Henry Sheridan 7 August 1864-16 October 1864

Horatio Gouverneur Wright temporary 16 October 1864-19 October 1864

Philip Henry Sheridan 19 October 1864-7 March 1865

Winfield Scott Hancock 7 March 1865-19 April 1865

Alfred Thomas Archimedes Torbert 19 April 1865-27 June 1865

7 August 1864: The Army of the Shenandoah was established in the Middle Military Division.

7 August 1864: Major-General Philip Henry Sheridan assumed command of the Army of the Shenandoah.

7 August 1864: Cavalry Corps Shenandoah was established in the Army of the Shenandoah.

7 August 1864: VI Corps Potomac transferred from the Army of the Potomac to the Army of the Shenandoah.

16 October 1864: Major-General Horatio Gouverneur Wright assumed temporary command of the Army of the Shenandoah, succeeding Major-General Philip Henry Sheridan.

19 October 1864: Major-General Philip Henry Sheridan assumed command of the Army of the Shenandoah, succeeding Major-General Henry Gouverneur Wright.

7 November 1864: XIX Corps Shenandoah was established in the Army of the Shenandoah. The elements of 1st Division and 2nd Division known as ‘Detachment XIX Corps’ while serving in the Shenandoah Valley were designated XIX Corps Shenandoah while the 1st Division retained the interim title of XIX Corps Gulf.

6 December 1864: VI Corps transferred from the Army of the Shenandoah to the Army of the Potomac.

7 March 1865: Major-General Winfield Scott Hancock assumed command of the Army of the Shenandoah, succeeding Major-General Philip Henry Sheridan.

20 March 1865: XIX Corps Shenandoah was discontinued.

25 March 1865: Cavalry Corps Shenandoah was discontinued, and is forces incorporated into Sheridan’s Cavalry Command Potomac.

26 March 1865: Sheridan’s Cavalry Command was established in the Department of the Potomac. It comprised the combined cavalry forces of the Army of the Potomac, the Army of the James, and the Army of the Shenandoah.

19 April 1865: Brigadier-General Alfred Thomas Archimedes Torbert assumed command of the Army of the Shenandoah, succeeding Major-General Winfield Scott Hancock.

27 June 1865: The Army of the Shenandoah was discontinued.

Army of Virginia

26 June 1862-12 September 1862

John Pope 26 June 1862-2 September 1862

George Brinton McClellan 2 September 1862-12 September 1862

26 June 1862: The Army of Virginia was established under the War Department, operating within the territory of but independently of the Department of the Potomac.

26 June 1862: Major-General John Pope assumed command of the Army of Virginia.

26 June 1862: I Corps Virginia was established in the Army of Virginia, comprising the field forces formerly in the Mountain Department.

26 June 1862: II Corps Virginia was established in the Army of Virginia, comprising the field forces formerly in the Department of the Shenandoah.

26 June 1862: III Corps Virginia was established in the Army of Virginia, comprising the field forces formerly in the Department of the Rappahannock.

2 September 1862: The Army of Virginia transferred to the Department of the Potomac.

2 September 1862: Major-General George Brinton McClellan assumed command of the Army of Virginia, succeeding Major-General John Pope.

12 September 1862: I Corps Virginia was discontinued, and incorporated into XI Corps Potomac.

12 September 1862: II Corps Virginia was discontinued, and incorporated into XII Corps Potomac.

12 September 1862: III Corps Virginia was discontinued, and incorporated into I Corps Potomac.

12 September 1862: The Army of Virginia was discontinued, and its forces incorporated into the Army of the Potomac.

Army of West Virginia

8 August 1864-19 December 1864

George Crook 8 August 1864-19 December 1864

8 August 1864: The Army of West Virginia was established in the Department of West Virginia.

8 August 1864: Brigadier-General George Crook assumed command of the Army of West Virginia.

19 December 1864: The Army of West Virginia was discontinued and incorporated into the Army of the Shenandoah.

Centre Grand Division, Potomac

14 November 1862-5 February 1863

Joseph Hooker 14 November 1862-24 January 1863

George Gordon Meade 25 January 1863

14 November 1862: The Centre Grand Division was established in the Army of the Potomac.

14 November 1862: Major-General Joseph Hooker assumed command of the Centre Grand Division of the Army of the Potomac.

14 November 1862: III Corps Potomac transferred to the Centre Grand Division of the Army of the Potomac.

14 November 1862: V Corps Potomac transferred to the Centre Grand Division of the Army of the Potomac.

25 January 1863: Major-General George Gordon Meade assumed command of the Centre Grand Division of the Army of the Potomac, succeeding Major-General Joseph Hooker.

5 February 1863: III Corps Potomac transferred to the Army of the Potomac.

5 February 1863: V Corps Potomac transferred to the Army of the Potomac.

5 February 1863: The Centre Grand Division of the Army of the Potomac was discontinued.

Left Grand Division, Potomac

14 November 1862-5 February 1863

William Buel Franklin 14 November 1862-24 January 1863

William Farrar Smith 25 January 1863-5 February 1863

14 November 1862: The Left Grand Division was established in the Army of the Potomac.

14 November 1862: Major-General William Buel Franklin assumed command of the Left Grand Division of the Army of the Potomac.

14 November 1862: I Corps Potomac transferred to the Left Grand Division of the Army of the Potomac.

14 November 1862: VI Corps Potomac transferred to the Left Grand Division of the Army of the Potomac.

25 January 1863: Major-General William Farrar Smith assumed command of the Left Grand Division of the Army of the Potomac, succeeding Major-General William Buel Franklin.

5 February 1863: I Corps Potomac transferred to the Army of the Potomac.

5 February 1863: VI Corps Potomac transferred to the Army of the Potomac.

5 February 1863: The Left Grand Division of the Army of the Potomac was discontinued.

Reserve Grand Division, Potomac

14 November 1862-5 February 1863

Franz Sigel 14 November 1862-5 February 1863

14 November 1862: The Reserve Grand Division was established in the Army of the Potomac.

14 November 1862: Major-General Franz Sigel assumed command of the Reserve Grand Division of the Army of the Potomac.

14 November 1862: XI Corps Potomac transferred to the Reserve Grand Division of the Army of the Potomac.

14 November 1862: XII Corps Potomac transferred to the Reserve Grand Division of the Army of the Potomac.

5 February 1863: XI Corps Potomac transferred to the Army of the Potomac.

5 February 1863: XII Corps Potomac transferred to the Army of the Potomac.

5 February 1863: The Reserve Grand Division of the Army of the Potomac was discontinued.

Right Grand Division. Potomac

14 November 1862-5 February 1863

Edwin Vose Sumner 14 November 1862-24 January 1863

Darius Nash Couch 25 January 1863-5 February 1863

14 November 1862: The Right Grand Division was established in the Army of the Potomac.

14 November 1862: Major-General Edwin Vose Sumner assumed command of the Right Grand Division of the Army of the Potomac.

14 November 1862: II Corps Potomac transferred to the Right Grand Division of the Army of the Potomac.

14 November 1862: IX Corps Potomac transferred to the Right Grand Division of the Army of the Potomac.

25 January 1863: Major-General Darius Nash Couch assumed command of the Right Grand Division of the Army of the Potomac, succeeding Major-General Edward Vose Sumner.

5 February 1863: II Corps Potomac transferred to the Army of the Potomac.

5 February 1863: IX Corps Potomac transferred to the Department of Virginia.

5 February 1863: The Right Grand Division of the Army of the Potomac was discontinued.

Sheridan’s Cavalry Command Potomac

26 March 1865-6 May 1865

Philip Henry Sheridan 26 March 1865-6 May 1865

26 March 1865: Sheridan’s Cavalry Command was established in the Department of the Potomac. It comprised the combined cavalry forces of the Army of the Potomac, the Army of the James, and the Army of the Shenandoah.

26 March 1865: Major-General Philip Henry Sheridan assumed command of Sheridan’s Cavalry Command Potomac. 26 March 1865: Cavalry Corps Potomac transferred from the Army of the Potomac to Sheridan’s Cavalry Command Potomac.

6 May 1865: Sheridan’s Cavalry Command James was discontinued.

I Corps Potomac #1

3 March 1862-4 April 1862

Irvin McDowell 3 March 1862-4 April 1862

3 March 1862: I Corps Potomac was established in the Army of the Potomac.

3 March 1862: Brigadier-General Irvin McDowell assumed command of I Corps Potomac.

4 April 1862: I Corps Potomac was discontinued, and its forces incorporated into the Department of the Rappahannock.

I Corps Potomac #2

12 September 1862-24 March 1864

Joseph Hooker 12 September 1862-17 September 1862,

George Gordon Meade temporary 17 September 1862-28 September 1862

John Fulton Reynolds 29 September 1862-1 January 1863

James Samuel Wadsworth temporary 2 January 1863-3 January 1863

John Fulton Reynolds 4 January 1863-28 February 1863

James Samuel Wadsworth temporary 1 March 1863-8 March 1863

John Fulton Reynolds 9 March 1863-1 July 1863

Abner Doubleday 1 July 1863-2 July 1863

John Newton 2 July 1863-10 March 1864

James Samuel Wadsworth temporary 11 March 1864-14 March 1864

John Newton 14 March 186-24 March 1864

12 September 1862: I Corps Potomac was re-established, comprising the forces of the discontinued III Corps Army of Virginia.

12 September 1862: Major-General Joseph Hooker assumed command of I Corps Potomac.

17 September 1862: Major-General George Gordon Meade assumed temporary command of I Corps Potomac, succeeding Major-General Joseph Hooker.

29 September 1862: Brigadier-General John Fulton Reynolds assumed command of I Corps Potomac, succeeding Major-General George Gordon Meade.

14 November 1862: I Corps Potomac transferred to the Left Grand Division of the Army of the Potomac.

14 November 1862: Major-General John Fulton Reynolds retained command of I Corps Potomac.

2 January 1863: Brigadier-General James Samuel Wadsworth assumed temporary command of I Corps Potomac, succeeding Major-General John Fulton Reynolds.

4 January 1863: Major-General John Fulton Reynolds assumed command of I Corps Potomac, succeeding Brigadier-General James Samuel Wadsworth.

5 February 1863: I Corps Potomac transferred from the Left Grand Division Potomac to the Army of the Potomac.

5 February 1863:  Major-General John Fulton Reynolds retained command of I Corps Potomac.

1 March 1863: Brigadier-General James Samuel Wadsworth assumed temporary command of I Corps Potomac, succeeding Major-General John Fulton Reynolds.

9 March 1863: Major-General John Fulton Reynolds assumed command of I Corps Potomac, succeeding Brigadier-General James Samuel Wadsworth.

1 July 1863: Major-General Abner Doubleday assumed temporary command of I Corps Potomac, succeeding Major-General John Fulton Reynolds.

2 July 1863: Major-General John Newton assumed command of I Corps Potomac, succeeding Major-General Abner Doubleday.

11 March 1864: Brigadier-General James Samuel Wadsworth assumed temporary command of I Corps Potomac, succeeding Brigadier-General John Newton.

14 March 1864: Major-General John Newton assumed command of I Corps Potomac, succeeding Brigadier-General James Samuel Wadsworth.

24 March 1864: I Corps Potomac was discontinued, and its forces allocated to V Corps Potomac.

I Corps Virginia

26 June 1862 12 September 1862

John Charles Frémont 26 June 1862-28 June 1862

Robert Cumming Schenck temporary 28 June 1862-29 June 1862

Franz Sigel 29 June 1862-7 July 1862

Robert Cumming Schenck temporary 7 July 1862-12 July 1862

Franz Sigel 12 July 1862-12 September 1862

26 June 1862: I Corps Virginia was established, comprising the field forces formerly in the Mountain Department.

26 June 1862: Major-General John Charles Frémont assumed command I Corps Virginia.

28 June 1862: Brigadier-General Robert Cumming Schenck assumed temporary command I Corps Virginia, succeeding Major-General John Charles Frémont.

29 June 1862: Major-General Franz Sigel assumed command of I Corps Army of Virginia, succeeding Brigadier-General Robert Cumming Schenck.

7 July 1862: Brigadier-General Robert Cumming Schenck assumed temporary command of I Corps Virginia, succeeding Major-General Franz Sigel.

12 July 1862: Major-General Franz Sigel assumed command of I Corps Virginia, succeeding Brigadier-General Robert Cumming Schenck.

2 September 1862: Major-General Franz Sigel retained command of I Corps Virginia.

12 September 1862: I Corps Virginia was discontinued, and incorporated into XI Corps Potomac.

II Corps Potomac

3 March 1862-28 June 1865

Edwin Vose Sumner 3 March 1862-6 October 1862

Darius Nash Couch 7 October 1862-25 December 1862

John Sedgwick 26 December 1862-25 January 1863

Oliver Otis Howard temporary 26 January 1863-2 February 1863

Darius Nash Couch 3 February 1863-22 May 1863

Winfield Scott Hancock 22 May 1863-1 July 1863

John Gibbon temporary 1 July 1863-2 July 1863

Winfield Scott Hancock 2 July 1863-3 July 1863

William Hays temporary 3 July 1863-16 August 1863

Gouverneur Kemble Warren 16 August 1863-26 August 1863

John Curtis Caldwell temporary 26 August 1863-2 September 1863

Gouverneur Kemble Warren 2 September 1863-10 October 1863

John Curtis Caldwell temporary 10 October 1863-12 October 1863

Gouverneur Kemble Warren 12 October 1863-16 December 1863

John Curtis Caldwell temporary 16 December 1863-29 December 1863

Gouverneur Kemble Warren 29 December 1863-9 January 1864

John Curtis Caldwell temporary 9 January 1864-13 January 1864

Gouverneur Kemble Warren 13 January 1864-24 March 1864

Winfield Scott Hancock 24 March 1864-18 June 1864

David Bell Birney temporary 18 June 1864-27 June 1864

Winfield Scott Hancock 27 June 1864-26 November 1864

Andrew Atkinson Humphreys 26 November 1864-15 February 1865

Gershom Mott temporary 15 February 1865-17 February 1865

Nelson Appleton Miles temporary 17 February 1865-25 February 1865

Andrew Atkinson Humphreys 25 February 1865-19 April 1865

Francis Channing Barlow temporary 19 April 1865-5 May 1865

Andrew Atkinson Humphreys 5 May 1865-9 June 1865

Gershom Mott temporary 9 June 1865-20 June 1865

Andrew Atkinson Humphreys 20 June 1865-28 June 1865

3 March 1862: II Corps Potomac was established in the Army of the Potomac.

3 March 1862: Brigadier-General Edwin Vose Sumner assumed command of II Corps Potomac.

7 October 1862: Major-General Darius Nash Couch assumed command of II Corps Potomac, succeeding Major-General Edwin Vose Sumner.

14 November 1862: II Corps Potomac transferred to the Right Grand Division of the Army of the Potomac.

14 November 1862: Major-General Darius Nash Couch retained command of II Corps Potomac.

26 December 1862: Major-General John Sedgwick assumed command of II Corps Potomac, succeeding Major-General Darius Nash Couch.

26 January 1863: Major-General Oliver Otis Howard assumed temporary command of II Corps Potomac, succeeding Major-General John Sedgwick.

3 February 1863: Major-General Darius Nash Couch assumed command of II Corps Potomac, succeeding Major-General Oliver Otis Howard.

5 February 1863: II Corps Potomac transferred from the Right Grand Division of the Army of the Potomac to the Army of the Potomac.

5 February 1863: Major-General Darius Nash Couch retained command of II Corps Potomac.

22 May 1863: Major-General Winfield Scott Hancock assumed command of II Corps Potomac, succeeding Major-General Darius Nash Couch.

1 July 1863: Brigadier-General John Gibbon assumed temporary command of II Corps Potomac, succeeding Major-General Winfield Scott Hancock.

2 July 1863: Major-General Winfield Scott Hancock assumed command of II Corps Potomac, succeeding Brigadier-General John Gibbon.

3 July 1863: Brigadier-General William Hays assumed temporary command of II Corps Potomac, succeeding Major-General Winfield Scott Hancock.

16 August 1863: Major-General Gouverneur Kemble Warren assumed command of II Corps Potomac, succeeding Brigadier-General William Hays.

26 August 1863: Brigadier-General John Curtis Caldwell assumed temporary command of II Corps Potomac, succeeding Major-General Gouverneur Kemble Warren.

2 September 1863: Major-General Gouverneur Kemble Warren assumed command of II Corps Potomac, succeeding Brigadier-General John Curtis Caldwell.

10 October 1863: Brigadier-General John Curtis Caldwell assumed temporary command of II Corps Potomac, succeeding Major-General Gouverneur Kemble Warren.

12 October 1863: Major-General Gouverneur Kemble Warren assumed command of II Corps Potomac, succeeding Brigadier-General John Curtis Caldwell.

16 December 1863: Brigadier-General John Curtis Caldwell assumed temporary command of II Corps Potomac, succeeding Major-General Gouverneur Kemble Warren.

29 December 1863: Major-General Gouverneur Kemble Warren assumed command of II Corps Potomac, succeeding Brigadier-General John Curtis Caldwell.

9 January 1864: Brigadier-General John Curtis Caldwell assumed temporary command of II Corps Potomac, succeeding Major-General Gouverneur Kemble Warren.

13 January 1864: Major-General Gouverneur Kemble Warren assumed command of II Corps Potomac, succeeding Brigadier-General John Curtis Caldwell.

24 March 1864: III Corps Potomac was discontinued, and its forces allocated to II Corps Potomac and VI Corps Potomac.

24 March 1864: Major-General Winfield Scott Hancock assumed command of II Corps Potomac, succeeding Major-General Gouverneur Kemble Warren.

18 June 1864: Brigadier-General David Bell Birney assumed temporary command of II Corps Potomac, succeeding Major-General Winfield Scott Hancock.

27 June 1864: Major-General Winfield Scott Hancock assumed command of II Corps Potomac, succeeding Major-General David Bell Birney.

26 November 1864: Major-General Andrew Atkinson Humphreys assumed command of II Corps Potomac, succeeding Major-General Winfield Scott Hancock.

15 February 1865: Major-General Gershom Mott assumed temporary command of II Corps Potomac, succeeding Brigadier-General Andrew Atkinson Humphreys.

17 February 1865: Brigadier-General Nelson Appleton Miles assumed temporary command of II Corps Potomac, succeeding Brigadier-General Gershom Mott.

25 February 1865: Major-General Andrew Atkinson Humphreys assumed command of II Corps Potomac, succeeding Brigadier-General Nelson Appleton Miles.

19 April 1865: Brigadier-General Francis Channing Barlow assumed temporary command of II Corps Potomac, succeeding Major-General Andrew Atkinson Humphreys.

5 May 1865: Major-General Andrew Atkinson Humphreys assumed command of II Corps Potomac, succeeding Brigadier-General Francis Channing Barlow.

9 June 1865: Major-General Gershom Mott assumed temporary command of II Corps Potomac, succeeding Major-General Andrew Atkinson Humphreys.

20 June 1865: Major-General Andrew Atkinson Humphreys assumed command of II Corps Potomac, succeeding Major-General Gershom Mott.

28 June 1865: II Corps Potomac was discontinued.

II Corps Virginia

26 June 1862 12 September 1862

Nathaniel Prentiss Banks 26 June 1862-3 September 1862

Alpheus Starkey Williams temporary 4 September 1862-12 September 1862

26 June 1862: II Corps Virginia was established, comprising the field forces formerly in the Department of the Shenandoah.

26 June 1862: Major-General Nathaniel Prentiss Banks assumed command II Corps Virginia.

2 September 1862: Major-General Nathaniel Prentiss Banks retained command of II Corps Virginia.

4 September 1862: Brigadier-General Alpheus Starkey Williams assumed temporary command of II Corps Virginia, succeeding Major-General Nathaniel Prentiss Banks.

12 September 1862: II Corps Virginia was discontinued, and incorporated into XII Corps Potomac.

III Corps Potomac

3 March 1862-24 March 1864

Samuel Peter Heintzelman 3 March 1862-19 October 1862

George Stoneman 20 October 1862-5 February 1863

Daniel Edgar Sickles 5 February 1863-29 May 1863

David Bell Birney temporary 29 May 1863-3 June 1863

Daniel Edgar Sickles 3 June 1863-2 July 1863

David Bell Birney temporary 2 July 1863-7 July 1863

William Henry French 7 July 1863-28 January 1864

David Bell Birney temporary 28 January 1864-17 February 1864

William Henry French 17 February 1864-24 March 1864

3 March 1862: III Corps Potomac was established in the Army of the Potomac.

3 March 1862: Brigadier-General Samuel Peter Heintzelman assumed command of III Corps Potomac.

20 October 1862: Brigadier-General George Stoneman assumed command of III Corps Potomac, succeeding Major-General Samuel Peter Heintzelman.

14 November 1862: III Corps Potomac transferred to the Centre Grand Division of the Army of the Potomac.

14 November 1862: Major-General George Stoneman retained command of III Corps Potomac.

5 February 1863: III Corps Potomac transferred from the Centre Grand Division Potomac to the Army of the Potomac.

5 February 1863: Major-General Daniel Edgar Sickles assumed command of III Corps Potomac.

29 May 1863: Major-General David Bell Birney assumed temporary command of III Corps Potomac, succeeding Major-General Daniel Edgar Sickles.

3 June 1863: Major-General Daniel Edgar Sickles assumed command of III Corps Potomac, succeeding Major-General David Bell Birney.

2 July 1863: Brigadier-General David Bell Birney assumed temporary command of III Corps Potomac, succeeding Major-General Daniel Edgar Sickles.

7 July 1863: Major-General William Henry French assumed command of III Corps Potomac, succeeding Major-General David Bell Birney.

28 January 1864: Brigadier-General David Bell Birney assumed temporary command of III Corps Potomac, succeeding Major-General William Henry French.

17 February 1864: Major-General William Henry French assumed command of III Corps Potomac, succeeding Major-General David Bell Birney.

24 March 1864: III Corps Potomac was discontinued, and its forces allocated to II Corps Potomac and VI Corps Potomac.

III Corps Virginia

26 June 1862-12 September 1862

Irvin McDowell 26 June 1862-4 September 1862

James Brewerton Ricketts temporary 5 September 1862

Joseph Hooker 6 September 1862-12 September 1862,

26 June 1862: III Corps Virginia was established., comprising the field forces formerly in the Department of the Rappahannock.

26 June 1862: Major-General Irvin McDowell assumed command III Corps Virginia.

2 September 1862: Major-General Irvin McDowell retained command of I Corps Virginia.

5 September 1862: Brigadier-General James Brewerton Ricketts assumed temporary command of III Corps Virginia, succeeding Major-General Irvin McDowell.

6 September 1862: Major-General Joseph Hooker assumed command of III Corps Virginia, succeeding Brigadier-General James Brewerton Ricketts.

12 September 1862: III Corps Virginia was discontinued, and incorporated into I Corps Potomac.

IV Corps Potomac

3 March 1862-16 August 1862

Erasmus Darwin Keyes 3 March 1862-16 August 1862

3 March 1862: IV Corps Potomac was established in the Army of the Potomac.

3 March 1862: Brigadier-General Erasmus Darwin Keyes assumed command of IV Corps Potomac.

16 August 1862: IV Corps Potomac transferred from the Army of the Potomac to the Department of Virginia.

IV Corps Virginia

16 August 1862-15 July 1863

Erasmus Darwin Keyes 16 August 1862-15 July 1863

16 August 1862: IV Corps Potomac transferred from the Army of the Potomac to the Department of Virginia.

16 August 1862: Major-General Erasmus Darwin Keyes retained command of IV Corps Virginia.

15 July 1863: IV Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

IV Corps Virginia and North Carolina

15 July 1863-1 August 1863

Erasmus Darwin Keyes 15 July 1863-1August 1863

15 July 1863: IV Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

15 July 1863: Major-General Erasmus Darwin Keyes retained command of IV Corps Virginia and North Carolina.

1 August 1863: IV Corps Virginia and North Carolina was discontinued, and its forces assigned to XVIII Corps Virginia and North Carolina.

V Corps Potomac #1

3 March 1862-4 April 1862

Nathaniel Prentiss Banks 3 March 1862-4 April 1862

3 March 1862: V Corps Potomac was established in the Army of the Potomac.

3 March 1862: Major-General Nathaniel Prentiss Banks assumed command of V Corps Potomac.

4 April 1862: V Corps Potomac was discontinued, and its forces incorporated into the Department of the Shenandoah.

V Corps Potomac #2

18 May 1862-28 June 1865

Fitz-John Porter 18 May 1862-9 November 1862

Joseph Hooker 10 November 1862-15 November 1862

Daniel Butterfield 16 November 1862-23 December 1862

George Gordon Meade 24 December 1862-25 January 1863

Charles Griffin temporary 26 January 1863-31 January 1863

George Sykes 1 February 1863-5 February 1863

George Gordon Meade 5 February 1863-16 February 1863

George Sykes temporary 16 February 1863-23 February 1863

Andrew Atkinson Humphreys temporary 23 February 1863-28 February 1863

George Gordon Meade 28 February 1863-28 June 1863

George Sykes 28 June 1863-7 October 1863

Samuel Wylie Crawford temporary 7 October 1863-15 October 1863

George Sykes 15 October 1863-24 March 1864

Gouverneur Kemble Warren 24 March 1864-2 January 1865

Samuel Wylie Crawford temporary 2 January 1865-27 January 1865

Gouverneur Kemble Warren 27 January 1865-1 April 1865

Charles Griffin temporary 1 April 1865-19 April 1865, 19 April 1865-28 June 1865

18 May 1862: Provisional V Corps Potomac was established in the Army of the Potomac.

18 May 1862: Brigadier-General Fitz-John Porter assumed command of V Corps Potomac.

22 July 1862: V Provisional Corps Potomac was confirmed as V Corps Potomac.

22 July 1862: Major-General Fitz-John Porter retained command V Corps Potomac.

10 November 1862: Major-General Joseph Hooker assumed command of V Corps Potomac, succeeding Major-General Fitz John Porter.

14 November 1862: V Corps Potomac transferred to the Centre Grand Division of the Army of the Potomac.

14 November 1862: Major-General Joseph Hooker retained command of V Corps Potomac.

16 November 1862: Brigadier-General Daniel Butterfield assumed command of V Corps Potomac, succeeding Major-General Joseph Hooker.

24 December 1862: Major-General George Gordon Meade assumed command of V Corps Potomac, succeeding Major-General Daniel Butterfield.

26 January 1863: Brigadier-General Charles Griffin assumed temporary command of V Corps Potomac, succeeding Major-General George Gordon Meade.

1 February 1863: Major-General George Sykes assumed temporary command of V Corps Army of the Potomac, succeeding Brigadier-General Charles Griffin.

5 February 1863: V Corps Potomac transferred from the Centre Grand Division Potomac to the Army of the Potomac.

5 February 1863: Major-General George Gordon Meade assumed command of V Corps Potomac, succeeding Major-General George Sykes.

16 February 1863: Major-General George Sykes assumed temporary command of V Corps Potomac, succeeding Major-General George Gordon Meade

23 February 1863: Brigadier-General Andrew Atkinson Humphreys assumed temporary command of V Corps Potomac, succeeding Major-General George Sykes.

28 February 1863: Major-General George Gordon Meade assumed command of V Corps Potomac, succeeding Brigadier-General Andrew Atkinson Humphreys.

28 June 1863: Major-General George Sykes assumed command of V Corps Potomac, succeeding Major-General George Gordon Meade.

7 October 1863: Brigadier-General Samuel Wylie Crawford assumed temporary command of V Corps Potomac, succeeding Major-General George Sykes.

15 October 1863: Major-General George Sykes assumed command of V Corps Potomac, succeeding Brigadier-General Samuel Wylie Crawford.

24 March 1864: I Corps Potomac was discontinued, and its forces allocated to V Corps Potomac.

24 March 1864: Major-General Gouverneur Kemble Warren assumed command of V Corps Potomac, succeeding Major-General George Sykes.

2 January 1865: Brigadier-General Samuel Wylie Crawford assumed temporary command of V Corps Potomac, succeeding Major-General Gouverneur Kemble Warren.

27 January 1865: Major-General Gouverneur Kemble Warren assumed command of V Corps Potomac, succeeding Brigadier-General Samuel Wylie Crawford.

1 April 1865: Brigadier-General Charles Griffin assumed command of V Corps Potomac, succeeding Major-General Gouverneur Kemble Warren.

28 June 1865: V Corps Potomac was discontinued.

VI Corps Potomac #1

18 May 1862-7 August 1864

William Buel Franklin 18 May 1862-15 November 1862

William Farrar Smith 16 November 1862-24 January 1863

John Newton 2 January 1863-3 February 1863

John Sedgwick 4 February 1863-6 April 1864

James Brewerton Ricketts temporary 6 April 1864-13 April 1864

John Sedgwick 13 April 1864-9 May 1864

Horatio Gouverneur Wright 9 May 1864-7 August 1864

18 May 1862: Provisional VI Corps Potomac was established in the Army of the Potomac.

18 May 1862: Brigadier-General William Buel Franklin assumed command of VI Corps Potomac.

22 July 1862: VI Provisional Corps Potomac was confirmed as VI Corps Potomac.

22 July 1862: Major-General William Buel Franklin retained command of VI Corps Potomac.

14 November 1862: VI Corps Potomac transferred to the Left Grand Division of the Army of the Potomac.

14 November 1862: Major-General William Buel Franklin retained command of VI Corps Potomac.

16 November 1862: Major-General William Farrar Smith assumed command of VI Corps Potomac, succeeding Major-General William Buel Franklin.

25 January 1863: Brigadier-General John Newton assumed command of VI Corps Potomac, succeeding Major-General William Farrar Smith.

4 February 1863: Major-General John Sedgwick assumed command VI Corps Potomac, succeeding Brigadier-General John Newton.

5 February 1863: VI Corps Potomac transferred from Left Grand Division Potomac to the Army of the Potomac.

5 February 1863:  Major-General John Sedgwick retained command of VI Corps Potomac.

24 March 1864: III Corps Potomac was discontinued, and its forces allocated to II Corps Potomac and VI Corps Potomac.

6 April 1864: Brigadier-General James Brewerton Ricketts assumed temporary command of VI Corps Potomac, succeeding Major-General John Sedgwick.

13 April 1864: Major-General John Sedgwick assumed command of VI Corps Potomac, succeeding Brigadier-General James Brewerton Ricketts.

9 May 1864: Brigadier-General Horatio Gouverneur Wright assumed command of VI Corps Potomac, succeeding Major-General John Sedgwick.

7 August 1864: VI Corps Potomac transferred from the Army of the Potomac to the Army of the Shenandoah.

VI Corps Potomac #2

6 December 1864-28 June 1865

Horatio Gouverneur Wright 6 December 1864-16 January 1865

George Washington Getty temporary 16 January 1865-11 February 1865

Horatio Gouverneur Wright 11 February 1865-28 June 1865

6 December 1864: VI Corps Shenandoah transferred from the Army of the Shenandoah to the Army of the Potomac.

6 December 1864: Major-General Horatio Gouverneur Wright retained command of VI Corps Potomac.

16 January 1865: Brigadier-General George Washington Getty assumed temporary command of VI Corps Potomac, succeeding Major-General Horatio Gouverneur Wright.

11 February 1865: Major-General Horatio Gouverneur Wright assumed command of VI Corps Potomac, succeeding Brigadier-General George Washington Getty.

28 June 1865: VI Corps Potomac was discontinued.

VI Corps Shenandoah

7 August 1864-6 December 1864

Horatio Gouverneur Wright 7 August 1864-16 October 1864

James Brewerton Ricketts temporary 16 October 1864-19 October 1864

George Washington Getty interim 19 October 1864

Horatio Gouverneur Wright 19 October 1864-6 December 1864

7 August 1864: VI Corps Potomac transferred from the Army of the Potomac to the Army of the Shenandoah.

7 August 1864: Major-General Horatio Gouverneur Wright retained command of VI Corps Shenandoah.

16 October 1864: Brigadier-General James Brewerton Ricketts assumed temporary command of VI Corps Shenandoah, succeeding Major-General Horatio Gouverneur Wright.

19 October 1864: Brigadier-General George Washington Getty assumed interim command of VI Corps Shenandoah, succeeding Brigadier-General James Brewerton Ricketts.

19 October 1864: Major-General Horatio Gouverneur Wright assumed command of VI Corps Shenandoah, succeeding Brigadier-General George Washington Getty.

6 December 1864: VI Corps Shenandoah transferred from the Army of the Shenandoah to the Army of the Potomac.

VII Corps Virginia

22 July 1862-15 July 1863

John Adams Dix 22 July 1862-15 July 1863

22 July 1862: VII Corps Virginia was established in the Department of Virginia, comprising forces based at Fortress Monroe, Camp Hamilton, Norfolk, Suffolk, Portsmouth, and Yorktown in Virginia.

22 July 1862: Major-General John Adams Dix assumed command of VII Corps Virginia.

15 July 1863: VII Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

VII Corps Virginia and North Carolina

15 July 1863-1 August 1863

George Washington Getty temporary 15 July 1863

Henry Morris Naglee 16 July 1863-19 July 1863

George Washington Getty temporary 20 July 1863-22 July 1863

Henry Morris Naglee 25 July 1863-1 August 1863

15 July 1863: VII Corps Virginia transferred from the Department of Virginia to the Department of Virginia and North Carolina.

15 July 1863: Brigadier-General George Washington Getty assumed temporary command of VII Corps Virginia and North Carolina, succeeding Major-General John Adams Dix.

16 July 1863: Brigadier-General Henry Morris Naglee assumed command of VII Corps Virginia and North Carolina, succeeding Brigadier-General George Washington Getty.

20 July 1863: Brigadier-General George Washington Getty assumed temporary command of VII Corps Virginia and North Carolina succeeding Brigadier-General Henry Morris Naglee.

25 July 1863: Brigadier-General Henry Morris Naglee assumed temporary command of VII Corps Virginia and North Carolina, succeeding Brigadier-General George Washington Getty.

1 August 1863: VII Corps Virginia and North Carolina was discontinued, and its forces assigned to XVIII Corps Virginia and North Carolina

VIII Corps Middle

12 July 1862-27 June 1865

John Ellis Wool 12 July 1862-22 December 1862

Robert Cumming Schenck 22 December 1862-12 March 1863

William Walton Morris temporary 12 March 1863-20 March 1863

Robert Cumming Schenck 20 March 1863-10 August 1863

William Walton Morris temporary 10 August 1863-31 August 1863

Robert Cumming Schenck 31 August 1863-22 September 1863

William Walton Morris temporary 22 September 1863-28 September 1863

Erastus Barnard Tyler temporary 28 September 1863-10 October 1863

Robert Cumming Schenck 10 October 1863-5 December 1863

Henry Hayes Lockwood 5 December 1863-12 March 1864 interim 22 March 1864

Lewis Wallace 12 March 1864-1 February 1865

William Walton Morris temporary 1 February 1865-19 April 1865

Lewis Wallace 19 April 1865-27 June 1865

12 July 1862: VIII Corps Middle was established in the Middle Department.

12 July 1862: Major-General John Ellis Wool assumed command of VIII Corps Middle.

22 December 1862: Major-General Robert Cumming Schenck assumed command of VIII Corps Middle, succeeding Major-General John Ellis Wool.

12 March 1863: Colonel William Walton Morris assumed temporary command of VIII Corps Middle, succeeding Major-General Robert Cumming Schenck.

20 March 1863: Brigadier-General Robert Cumming Schenck assumed command of VIII Corps, succeeding Colonel William Walton Morris.

10 August 1863: Colonel William Walton Morris assumed temporary command of VIII Corps Middle, succeeding Major-General Robert Cumming Schenck.

31 August 1863: Major-General Robert Cumming Schenck assumed command of VIII Corps Middle, succeeding Colonel William Walton Morris.

22 September 1863: Colonel William Walton Morris assumed temporary command of VIII Corps Middle, succeeding Brigadier-General Robert Cummings Schenck.

28 September 1863: Brigadier-General Erastus Barnard Tyler assumed temporary command VIII Corps Middle, succeeding Colonel William Walton Morris.

10 October 1863: Brigadier-General Robert Cumming Schenck assumed command of VIII Corps Middle, succeeding Brigadier-General Erastus Barnard Tyler.

5 December 1863: Brigadier-General Henry Hayes Lockwood assumed command of VIII Corps Middle, succeeding Major-General Robert Cumming Schenck.

12 March 1864: Major-General Lewis Wallace was appointed to command VIII Corps Middle, arriving on March 22 1864, to succeed Brigadier-General Henry Hayes Lockwood.

22 March 1864: Major-General Lewis Wallace arrived to command VIII Corps Middle, succeeding Brigadier-General Henry Hayes Lockwood.

1 February 1865: Colonel William Walton Morris assumed temporary command of VIII Corps Middle, succeeding Major-General Lewis Wallace.

19 April 1865: Major-General Lewis Wallace assumed command of VIII Corps Middle, succeeding Colonel William Walton Morris.

17 May 1865: VIII Corps Middle transferred from the Middle Department to the direct command of the Middle Military Division.

17 May 1865: Major-General Lewis Wallace retained command of VIII Corps Middle.

27 June 1865: VIII Corps Middle transferred from the Middle Military Division to the Military Division of the Atlantic.

VIII Corps Atlantic

27 June 1865-1 August 1865

Lewis Wallace 27 June 1865-1 August 1865

27 June 1865: VIII Corps Middle transferred from the Middle Military Division to the Military Division of the Atlantic.

27 June 1865: Major-General Lewis Wallace retained command of VIII Corps Atlantic.

1 August 1865: VIII Corps Atlantic was discontinued.

IX Corps Potomac #1

22 July 1862-3 August 1862

Ambrose Everett Burnside 22 July 1862-3 August 1862

22 July 1862: IX Corps Potomac was established in the Army of the Potomac, comprising forces that had participated in the Expedition to North Carolina.

22 July 1862: Major-General Ambrose Everett Burnside assumed command of IX Corps Potomac.

3 August 1862: IX Corps transferred from the Army of the Potomac to the Department of Virginia.

IX Corps Potomac #2

3 September 1862-5 February 1863

Jesse Lee Reno 3 September 1862-13 September 1862

Jacob Dolson Cox temporary 14 September 1862-7 October 1862

Orlando Bolivar Willcox 8 October 1862-16 January 1863

John Sedgwick 16 January 1863-5 February 1863

3 September 1862: IX Corps Virginia transferred from the Department of Virginia to the Army of the Potomac.

3 September 1862: Major-General Jesse Lee Reno assumed command of IX Corps Potomac, succeeding Major-General Ambrose Everett Burnside.

14 September 1862: Brigadier-General Jacob Dolson Cox assumed temporary command of IX Corps Potomac, succeeding Major-General Jesse Lee Reno.

8 October 1862: Brigadier-General Orlando Bolivar Willcox assumed temporary command of IX Corps Potomac, succeeding Major-General Jacob Dolson Cox.

14 November 1862: IX Corps Potomac transferred to the Right Grand Division of the Army of the Potomac.

14 November 1862: Brigadier-General Orlando Bolivar Willcox retained temporary command of IX Corps Potomac.

16 January 1863: Major-General John Sedgwick assumed command of IX Corps Potomac, succeeding Brigadier-General Orlando Bolivar Willcox.

5 February 1863: IX Corps Potomac transferred from the Right Grand Division of the Army of the Potomac to the Department of Virginia.

IX Corps Potomac #3

13 April 1864-24 April 1865

Ambrose Everett Burnside 13 April 1864-14 August 1864

John Grubb Parke temporary 14 August 1864-22 August 1864, 22 August 1864-1 September 1864

Orlando Bolivar Willcox temporary 1 September 1864-9 September 1864

John Grubb Parke 9 September 1864-31 December 1864

Orlando Bolivar Willcox temporary 31 December 1864-12 January 1865

John Grubb Parke 12 January 1865-24 January 1865

Orlando Bolivar Willcox temporary 24 January 1865-2 February 1865

John Grubb Parke 2 February 1865-24 April 1865

13 April 1864: IX Corps transferred from the Army of the Ohio to the Department of the Potomac.

13 April 1864: Major-General Ambrose Everett Burnside assumed command of IX Corps Potomac, succeeding Major-General John Grubb Parke.

24 May 1864: IX Corps transferred from the Department of the Potomac to the Army of the Potomac.

24 May 1864: Major-General Ambrose Everett Burnside retained command of IX Corps Potomac.

14 August 1864: Major-General John Grubb Parke assumed temporary command of IX Corps Potomac, succeeding Major-General Ambrose Everett Burnside.

22 August 1864: Major-General John Grubb Parke assumed full command of IX Corps Potomac.

1 September 1864: Brigadier-General Orlando Bolivar Willcox assumed temporary command of IX Corps Potomac, succeeding Major-General John Grubb Parke.

9 September 1864: Major-General John Grubb Parke assumed command of IX Corps Potomac, succeeding Brigadier-General Orlando Bolivar Willcox.

31 December 1864: Brigadier-General Orlando Bolivar Willcox assumed temporary command of IX Corps Potomac, succeeding Major-General John Grubb Parke.

12 January 1865: Major-General John Grubb Parke assumed command of IX Corps Potomac, succeeding Brigadier-General Orlando Bolivar Willcox.

24 January 1865: Brigadier-General Orlando Bolivar Willcox assumed temporary command of IX Corps Potomac, succeeding Major-General John Grubb Parke.

2 February 1865: Major-General John Grubb Parke assumed command of IX Corps Potomac, succeeding Brigadier-General Orlando Bolivar Willcox.

24 April 1865: IX Corps Potomac transferred from the Army of the Potomac to the Department of Washington.

IX Corps Virginia #1

3 August 1862-3 September 1862

Ambrose Everett Burnside 3 August 1862-3 September 1862

3 August 1862: IX Corps transferred from the Army of the Potomac to the Department of Virginia.

3 August 1862: Major-General Ambrose Everett Burnside retained command of IX Corps Virginia.

3 September 1862: IX Corps Virginia transferred from the Department of Virginia to the Army of the Potomac.

IX Corps Virginia #2

5 February 1863-17 March 1863

William Farrar Smith 5 February 1863-7 March 1863

Orlando Bolivar Willcox temporary 8 March 1863-17 March 1863

5 February 1863: IX Corps Potomac transferred from the Right Grand Division of the Army of the Potomac to the Department of Virginia.

5 February 1863: Major-General William Farrar Smith assumed command of IX Corps Virginia.

8 March 1863: Brigadier-General Orlando Bolivar Willcox assumed temporary command of IX Corps Virginia, succeeding Brigadier-General William Farrar Smith.

17 March 1863: IX Corps transferred from the Department of Virginia to the Department of the Ohio.

X Corps James

28 April 1864-3 December 1864

Alfred Howe Terry temporary 28 April 1864-3 May 1864

Quincy Adam Gillmore 4 May 1864-13 June 1864

Alfred Howe Terry temporary 14 June 1864-20 June 1864

William Thomas Harbaugh Brooks temporary 21 June 1864-13 July 1864

Alfred Howe Terry temporary 14 July 1864-20 July 1864

Edward Otho Cresap Ord 21 July 1864-22 July 1864

David Bell Birney 23 July 1864-9 October 1864

Alfred Howe Terry 10 October 1864-3 November 1864

Adelbert Ames temporary 4 November 1864-17 November 1864

Alfred Howe Terry 18 November 1864-3 December 1864

28 April 1864: X Corps South transferred from the Department of the South to the Army of the James.

28 April 1864: Brigadier-General Alfred Howe Terry assumed temporary command of X Corps James, succeeding Major-General Quincy Adams Gillmore.

4 May 1864: Major-General Quincy Adams Gillmore assumed command of X Corps James, succeeding Brigadier-General Alfred Howe Terry.

14 June 1864: Brigadier-General Alfred Howe Terry assumed temporary command of X Corps James, succeeding Major-General Quincy Adams Gillmore.

21 June 1864: Brigadier-General William Thomas Harbaugh Brooks assumed temporary command of X Corps James, succeeding Brigadier-General Alfred Howe Terry.

14 July 1864: Brigadier-General Alfred Howe Terry assumed temporary command of X Corps James, succeeding Brigadier-General William Thomas Harbaugh Brooks.

21 July 1864: Major-General Edward Otho Cresap Ord assumed command of X Corps James, succeeding Brigadier-General Alfred Howe Terry.

23 July 1864: Major-General David Bell Birney assumed command of X Corps James, succeeding Major-General Edward Otho Cresap Ord.

10 October 1864: Major-General Alfred Howe Terry assumed command of X Corps James, succeeding Major-General David Bell Birney.

4 November 1864: Brigadier-General Adelbert Ames assumed temporary command of X Corps James, succeeding Major-General Alfred Howe Terry.

18 November 1864: Major-General Alfred Howe Terry assumed command of X Corps James, succeeding Brigadier-General Adelbert Ames.

3 December 1864: XXV Corps was established in the Army of the James by consolidating the black divisions of X Corps James and XVIII Corps James.

3 December 1864: X Corps James was discontinued.

XI Corps Potomac

12 September 1862-25 September 1863

Franz Sigel 12 September 1862-9 January 1863

Julius Stahel temporary 10 January 1863-18 January 1863

Carl Schurz temporary 19 January 1863-5 February 1863

Franz Sigel 5 February 1863-22 February 1863

Adolph Wilhelm August Frederick von Steinwehr temporary 22 February 1863-5 March 1863

Carl Schurz temporary 5 March 1863-2 April 1863

Oliver Otis Howard 2 April 1863-1 July 1863

Carl Schurz temporary 1 July 1863

Oliver Otis Howard 1 July 1863-25 September 1863

12 September 1862: XI Corps was established in the Army of the Potomac, comprising the forces of the discontinued I Corps Virginia.

12 September 1862: Major-General Franz Sigel assumed command of XI Corps Potomac.

14 November 1862: XI Corps Potomac transferred to the Reserve Grand Division of the Army of the Potomac.

14 November 1862: Major-General Franz Sigel retained command of XI Corps Potomac.

10 January 1863: Brigadier-General Julius Stahel assumed temporary command of XI Corps Potomac, succeeding Major-General Franz Sigel.

19 January 1863: Major-General Carl Schurz assumed temporary command of XI Corps Potomac, succeeding Brigadier-General Julius Stahel

5 February 1863: XI Corps Potomac transferred from the Reserve Grand Division of the Army of the Potomac to the Army of the Potomac.

5 February 1863: Major-General Franz Sigel assumed command of XI Corps Potomac, succeeding Major-General Carl Schurz.

22 February 1863: Brigadier-General Adolph Wilhelm August Frederick von Steinwehr assumed temporary command of XI Corps Potomac, succeeding Major-General Franz Sigel.

5 March 1863: Brigadier-General Carl Schurz assumed temporary command of XI Corps Potomac, succeeding Brigadier-General Adolph Wilhelm August Frederick von Steinwehr.

2 April 1863: Major-General Oliver Otis Howard assumed command of XI Corps Potomac, succeeding Major-General Carl Schurz.

1 July 1863: Brigadier-General Carl Schurz assumed temporary command of XI Corps Potomac, succeeding Major-General Oliver Otis Howard.

1 July 1863: Major-General Oliver Otis Howard assumed command of XI Corps Potomac, succeeding Major-General Carl Schurz.

25 September 1863: XI Corps Potomac transferred from the Army of the Potomac to Hooker’s Command Cumberland.

XII Corps Potomac

12 September 1862-25 September 1863

Alpheus Starkey Williams temporary 4 September 1862-12 September 1862

Joseph King Fenno Mansfield 15 September 1862-17 September 1862

Alpheus Starkey Williams temporary 17 September 1862-19 October 1862

Henry Warner Slocum 20 October 1862-1 July 1863

Alpheus Starkey Williams temporary 1 July 1863-4 July 1863

Henry Warner Slocum 4 July 1863-31 August 1863

Alpheus Starkey Williams temporary 31 August 1863-13 September 1863

Henry Warner Slocum 13 September 1863-25 September 1863

12 September 1862: XII Corps was established in the Army of the Potomac, comprising the forces of the discontinued II Corps Virginia.

12 September 1862: Brigadier-General Alpheus Starkey Williams assumed temporary command of XII Corps Potomac.

15 September 1862: Major-General Joseph King Fenno Mansfield assumed command of XII Corps Potomac, succeeding Brigadier-General Alpheus Starkey Williams.

17 September 1862: Brigadier-General Alpheus Starkey Williams assumed temporary command of XII Corps Potomac, succeeding Major-General Joseph King Fenno Mansfield.

20 October 1862: Major-General Henry Warner Slocum assumed command of XII Corps Potomac, succeeding Brigadier-General Alpheus Starkey Williams.

14 November 1862: XII Corps Potomac transferred to the Reserve Grand Division of the Army of the Potomac.

14 November 1862: Major-General Henry Warner Slocum retained command of XIII Corps Potomac.

5 February 1863: XII Corps Potomac transferred from the Reserve Grand Division of the Army of the Potomac to the Army of the Potomac.

5 February 1863: Major-General Henry Warner Slocum retained command of XII Corps Potomac.

1 July 1863: Brigadier-General Alpheus Starkey Williams assumed temporary command of XII Corps Potomac, succeeding Major-General Henry Warner Slocum.

4 July 1863: Major-General Henry Warner Slocum assumed command of XII Corps Potomac, succeeding Brigadier-General Alpheus Starkey Williams.

31 August 1863: Brigadier-General Alpheus Starkey Williams assumed temporary command of XII Corps Potomac, succeeding Major-General Henry Warner Slocum.

13 September 1863: Major-General Henry Warner Slocum assumed command of XII Corps Potomac, succeeding Brigadier-General Alpheus Starkey Williams.

25 September 1863: XII Corps Potomac transferred from the Army of the Potomac to Hooker’s Command Cumberland.

XVIII Corps James

2 May 1864-3 December 1864

William Farrar Smith 2 May 1864-9 July 1864

John Henry Martindale temporary 10 July 1864-20 July 1864

Edward Otho Cresap Ord 21 July 1864-3 September 1864

John Gibbon temporary 4 September 1864-21 September 1864

Edward Otho Cresap Ord 22 September 1864-28 September 1864

Charles Adam Heckman temporary 29 September 1864-30 September 1864

Godfrey Weitzel 1 October 1864-3 December 1864

2 May 1864: XVIII Corps transferred from the Department of Virginia and North Carolina to the Army of the James.

2 May 1864: William Farrar Smith assumed command of XVIII Corps James, succeeding Major-General Benjamin Franklin Butler.

10 July 1864: Brigadier-General John Henry Martindale assumed temporary command of XVIII Corps James, succeeding Major-General William Farrar Smith.

21 July 1864: Major-General Edward Otho Cresap Ord assumed command of XVIII Corps James, succeeding Brigadier-General John Henry Martindale.

4 September 1864: Major-General John Gibbon assumed temporary command of XVIII Corps James, succeeding Major-General Edward Otho Cresap Ord.

22 September 1864: Major-General Edward Otho Cresap Ord assumed command of XVIII Corps James, succeeding Major-General John Gibbon.

29 September 1864: Brigadier-General Charles Adam Heckman assumed temporary command of XVIII Corps James, succeeding Major-General Edward Otho Cresap Ord.

1 October 1864: Brigadier-General Godfrey Weitzel assumed command of XVIII Corps James, succeeding Brigadier-Charles Adam Pleasant Heckman.

3 December 1864: XXV Corps was established in the Army of the James by consolidating the black divisions of X Corps and XVIII Corps.

3 December 1864: XVIII Corps James was discontinued.

XIX Corps Shenandoah

7 November 1864-20 March 1865

Cuvier Grover 7 November 1864-28 December 1864

William Hemsley Emory 28 December 1864-20 March 1865

7 November 1864: XIX Corps Shenandoah was established in the Army of the Shenandoah.

7 November 1864: Brigadier-General Cuvier Grover was appointed to command XIX Corps Shenandoah, arriving on 11 November 1864.The elements of 1st Division and 2nd Division known as ‘Detachment XIX Corps Gulf’ were designated XIX Corps Shenandoah. The 3rd Division remained in Louisiana with the interim title XIX Corps Gulf.

11 November 1864: Brigadier-General Cuvier Grover arrived to command XIX Corps Shenandoah.

28 December 1864: Brigadier-General William Hemsley Emory assumed command of XIX Corps Shenandoah, succeeding Brigadier-General Cuvier Grover.

20 March 1865: XIX Corps Shenandoah was discontinued.

XXIV Corps James

3 December 1864-1 August 1865

Edward Otho Cresap Ord 3 December 1864-5 December 1864

Alfred Howe Terry 6 December 1864-1 January 1865

Charles Devens temporary 2 January 1865-14 January 1865

John Gibbon 15 January 1865-27 April 1865

John Wesley Turner 27 April 1865-17 May 1865

John Gibbon 17 May 1865-8 July 1865

John Wesley Turner 8 July 1865-1 August 1865

3 December 1864: XXIV Corps was established in the Army of the James.

3 December 1864: Major-General Edward Otho Cresap Ord assumed command of XXIV Corps James.

6 December 1864: Brigadier-General Alfred Howe Terry assumed command of XXIV Corps James, succeeding Major-General Edward Otho Cresap Ord.

2 January 1865: Brigadier-General Charles Devens assumed temporary command of XXIV Corps James, succeeding Major-General Alfred Howe Terry.

15 January 1865: Major-General John Gibbon assumed command of XXIV Corps James, succeeding Brigadier-General Charles Devens.

27 April 1865: Brigadier-General John Wesley Turner assumed temporary command of XXIV Corps James, succeeding Major-General John Gibbon.

17 May 1865: Major-General John Gibbon assumed command of XXIV Corps James, succeeding Brigadier-General John Wesley Turner.

8 July 1865: Brigadier-General John Wesley Turner assumed temporary command of XXIV Corps James, succeeding Major-General John Gibbon.

1 August 1865: XXIV Corps James was discontinued.

XXV Corps James

3 December 1864-23 May 1865

Godfrey Weitzel 3 December 1864-31 December 1864

Charles Adam Heckman 1 January 1865-2 February 1865

Godfrey Weitzel 2 February 1865-23 May 1865

3 December 1864: XXV Corps James was established in the Army of the James by consolidating the black divisions from X Corps James and XVIII Corps James.

3 December 1864: Major-General Godfrey Weitzel assumed command of XXV Corps James.

1 January 1865: Brigadier-General Charles Adam Heckman assumed command of XXV Corps James succeeding Major-General Godfrey Weitzel.

2 February 1865: Major-General Godfrey Weitzel assumed command of XXV Corps James, succeeding Brigadier-General Charles Adam Heckman.

23 May 1865: XXV Corps James transferred from the Army of the James to the Military Division of the Southwest.

Cavalry Corps Potomac

12 February 1863-27 June 1865

George Stoneman 12 February 1863-22 May 1863

Alfred Pleasonton 22 May 1863-22 January 1864

David McMurtrie Gregg temporary 22 January 1864-12 February 1864

Alfred Pleasonton 12 February 1864-25 March 1864

David McMurtrie Gregg temporary 25 March 1864-4 April 1864

Philip Henry Sheridan 4 April 1864-2 August 1864

David McMurtrie Gregg 2 August 1864-10 February 1865

John Irvin Gregg temporary 10 February 1865-24 February 1865

Henry Eugene Davies 24 February 1865-25 March 1865

Wesley Merritt 25 March 1865-22 May 1865

George Crook 22 May 1865-1 June 1865

William Wells 1 June 1865-27 June 1865

12 February 1863: Cavalry Corps Potomac was established in the Army of the Potomac.

12 February 1863: Major-General George Stoneman assumed command of Cavalry Corps Potomac.

22 May 1863: Brigadier-General Alfred Pleasonton assumed command of Cavalry Corps Potomac, succeeding Major-General George Stoneman.

22 January 1864: Brigadier-General David McMurtrie Gregg assumed command of Cavalry Corps Potomac, succeeding Major-General Alfred Pleasonton.

12 February 1864: Major-General Alfred Pleasonton assumed command of Cavalry Corps Potomac, succeeding Brigadier-General David McMurtrie Gregg.

25 March 1864: Brigadier-General David McMurtrie Gregg assumed temporary command of Cavalry Corps Potomac, succeeding Major-General Alfred Pleasonton.

4 April 1864: Major-General Philip Henry Sheridan assumed command of Cavalry Corps Potomac, succeeding Brigadier-General David McMurtrie Gregg.

2 August 1864: Brigadier-General David McMurtrie Gregg assumed command of Cavalry Corps Potomac, succeeding Major-General Philip Henry Sheridan.

10 February 1865: Colonel John Irvin Gregg assumed command of Cavalry Corps Potomac, succeeding Major-General David McMurtrie Gregg.

24 February 1865: Brigadier-General Henry Eugene Davies assumed command of Cavalry Corps Potomac, succeeding Colonel John Irvin Gregg.

25 March 1865: Brigadier-General Wesley Merritt assumed command of Cavalry Corps Potomac, succeeding Brigadier-General Henry Eugene Davies.

26 March 1865: Cavalry Corps Potomac transferred from the Army of the Potomac to Sheridan’s Cavalry Command Potomac.

26 March 1865: Brigadier-General Wesley Merritt retained command of Cavalry Corps Potomac.

6 May 1865: Cavalry Corps Potomac transferred from Sheridan’s Cavalry Command Potomac to the Army of the Potomac.

6 May 1865: Major-General Wesley Merritt retained command of Cavalry Corps Potomac.

22 May 1865: Major-General George Crook assumed command of Cavalry Corps Potomac, succeeding Major-General Wesley Merritt.

1 June 1865: Brigadier-General William Wells assumed command of Cavalry Corps Potomac, succeeding Major-General George Crook.

27 June 1865: Cavalry Corps Potomac was discontinued.

Cavalry Corps Shenandoah

7 August 1864-25 March 1865

Alfred Thomas Archimedes Torbert 7 August 1864-26 January 1865

Wesley Merritt 26 January 1865-25 March 1865

7 August 1864: Cavalry Corps was established in the Army of the Shenandoah.

7 August 1864: Brigadier-General Alfred Thomas Archimedes Torbert was appointed to command Cavalry Corps Shenandoah, arriving on August 10 1864.

10 August 1864: Brigadier-General Alfred Thomas Archimedes Torbert arrived to command Cavalry Corps Shenandoah.

26 January 1865: Brigadier-General Wesley Merritt assumed command of Cavalry Corps Shenandoah, succeeding Brigadier-General Alfred Thomas Archimedes Torbert.

25 March 1865: Cavalry Corps Shenandoah was discontinued, and its forces incorporated into Sheridan’s Cavalry Command.

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