Union Wartime Organisation: Gulf Coast Theatre

Union Wartime Organisation

Gulf Coast Theatre

April 1861-June 1865

Summary

This theatre broadly covers the states of Texas, Louisiana, Alabama, Florida, and adjacent operational regions.

The outbreak of war found only isolated outposts still in the hands of the Federal authorities and all but one of these were quickly taken over by the Confederates with varying degrees of resistance. The important Department of Texas continued in nominal existence until November 1862 despite there being no organised military force in the state since April 1861.

The exception was Fort Pickens near Pensacola, Florida. And a new Department of Florida was established almost immediately after the outbreak of hostilities with headquarters at Fort Pickens. Theoretically, the Department was responsible for the entire state of Florida although the fort was the only Union-occupied ground. By January 11 1862, sufficient progress had been made to establish the Department of Key West to oversee the western Florida coast and islands.

The Department of the South was established in March 1862 and took control of the Department of Florida and Department of Key West, which were reduced to Districts of that Department. Responsibility for western Florida and the coastal section of Alabama alternated between the Department of the Gulf and the Department of the South, depending on the evolving military situation and progress of operations. The Department of the Gulf is described here, and the Department of the South is described in Part 3e: Atlantic Coast Theatre.

The seizure of New Orleans in early 1862 led to the capture of much of Louisiana and enabled Union warships to penetrate inland up the Mississippi and Red Rivers, assisting the army as it gradually took control of the lower Mississippi by July 1863. The Department of the Gulf was established under Benjamin Franklin Butler in February 1862, to direct the operations in Louisiana. The coast of Texas was added officially in November 1862, coinciding with the appointment of Nathaniel Prentiss Banks to replace Butler. As new territory was captured, Districts were set up to direct local operations. The Department of the Gulf was the primary authority for operations in the theatre until the end of the war, and its main field force was known as the Army of the Gulf. The bulk of the army was transported from the North by the Navy, but they were increasingly supplemented by detachments coming southwards along the Mississippi and forces recruited locally from freed slaves.

In May 1864 the failed advance towards Texas from the north (Arkansas) and east (Louisiana) proved the need for strategic coordination of operations west of the Mississippi. As a result, the Military Division of West Mississippi (Trans-Mississippi Military Division) was created, responsible for the Department of the Gulf, the Department of Arkansas, and the Department of the Missouri. By the end of 1864 attention was being directed east of the Mississippi and the Department of the Mississippi was added to the Military Division in November 1864. In January 1865, as the objective switched more intensively towards Mobile Bay and the Alabama Coast, the Department of the Missouri (January 1865) was detached, to be followed by the Department of Arkansas in March 1865. After combining all available field forces in a new Army of West Mississippi in February 1865, the campaign was begun against Mobile. The Districts around Mobile were transferred temporarily from their Departments to the direct control of the Military Division for the same operational reasons.

In May 1865 the purpose of the Military Division was complete, and it was discontinued. The Department of the Gulf operated independently from May 1865, however it passed control over Louisiana and Texas to the new Military Division of the Southwest as a show of strength was presented to the French authorities in Mexico. The Department retained its authority in Mississippi, and coastal parts of Alabama and Florida until the post-war reorganisation of June 27 1865, when it ceased to exist.


Department of Texas

Union High Command on April 12 1861 Gulf Coast Theatre

  • Department of Texas: Carlos Adolphus Waite

(From Pre-War organisation, April 12 1861-November 8 1862, discontinued)

  • Carlos Adolphus Waite (April 12 1861-April 22 1861)
  • Vacant (April 23 1861-November 8 1862)

April 12 1861: Colonel Carolos Adolphus Waite retained command of the Department of Texas.

April 23 1861: The command the Department of Texas became vacant when Colonel Carlos Adolphus Waite was captured by Confederate authorities.

November 8 1862: The Department of Texas was discontinued. The state of Texas was added to the Department of the Gulf.


Department of Florida

Union High Command on April 13 1861 Gulf Coast Theatre

  • Department of Florida established: Harvey Brown awaited
  • Department of Texas: Carlos Adolphus Waite

(Established, April 13 1861-March 15 1862, discontinued, to Western District of the Department of the South)

  • Harvey Brown (April 13 1861-January 9 1862)
  • Lewis Golding Arnold (January 10 1862-March 15 1862)

April 13 1861: The Department of Florida was established with headquarters at Fort Pickens, comprising the state of Florida transferred from the Department of the East. Major Harvey Brown was appointed to command the Department of Florida, arriving on 18th April 1861.

April 18 1861: Major Harvey Brown arrived to command the Department of Florida, with headquarters at Fort Pickens in Pensacola Bay.

January 10 1862: Major Lewis Golding Arnold assumed command of the Department of Florida, succeeding Colonel Harvey Brown.

January 11 1862: Key West and the coastline of Florida from Cape Canaveral to the Apalachicola River were transferred from the Department of Florida to the Department of Key West.

March 15 1862: The Department of Florida was discontinued, and its territory incorporated into the Western District of the Department of the South.


Department of Key West

Union High Command on January 11 1862 Gulf Coast Theatre

  • Department of Florida: Lewis Golding Arnold
  • Department of Key West: John Milton Brannan awaited
  • Department of Texas: Vacant

(January 11 1862-March 15 1862, to Southern District of the Department of the South)

  • John Milton Brannan (January 11 1862-March 15 1862)

January 11 1862: The Department of Key West was established, comprising Florida from Cape Canaveral along the coast to the Apalachicola River, and the Tortugas. Key West and the coastline of Florida from Cape Canaveral to the Apalachicola River were transferred from the Department of Florida to the Department of Key West. Brigadier-General John Milton Brannan was appointed to command the Department of Key West, arriving on 21st February 1862.

February 21 1862: Brigadier-General John Milton Brannan arrived to command the Department of Key West.

March 15 1862: The Department of Key West was discontinued, and incorporated into the Department of the South, later becoming the Southern District if the Department of the South.


Department of the Gulf

Union High Command on February 23 1862 Gulf Coast Theatre

  • Department of Florida: Lewis Golding Arnold
  • Department of the Gulf: Benjamin Franklin Butler awaited
    • Army of the Gulf: Benjamin Franklin Butler
  • Department of Key West: John Milton Brannan
  • Department of Texas: Vacant

(Established, February 23 1862-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Benjamin Franklin Butler (February 23 1862-November 7 1862 interim December 16 1862)
  • Nathaniel Prentiss Banks (November 8 1862-May 7 1864)

February 23 1862: The Department of the Gulf was established, with responsibility for forces west of the Mississippi River in Texas and Louisiana. Major-General Benjamin Franklin Butler was appointed to command the Department of the Gulf, arriving on 20th March 1862. The Army of the Gulf was established in the Department of the Gulf.

March 20 1862: Major-General Benjamin Franklin Butler arrived to command the Department of the Gulf.

August 8 1862: The District of Pensacola was established in the Department of the Gulf, comprising Florida west of the Apalachicola River. The rest of Florida remained in the Department of the South.

November 8 1862: The Department of Texas was discontinued. The state of Texas was added to the Department of the Gulf. Major-General Nathaniel Prentiss Banks was appointed to command the Department of the Gulf, arriving on 17th December 1862. Banks assumed command of the Army of the Gulf, succeeding Major-General Benjamin Franklin Butler on 15th December 1862.

November 9 1862: The District of La Fourche was established in the Department of the Gulf.

December 16 1862: The Defences of New Orleans was established in the Department of the Gulf.

December 17 1862: Major-General Nathaniel Prentiss Banks arrived to command the Department of the Gulf, succeeding Major-General Benjamin Franklin Butler.

March 16 1863: The District of Key West and Tortugas was established in the Department of the Gulf. The Tortugas and West Florida were transferred from the Department of the South and the remainder of Florida remained in the Department of the South.

July 9 1863: The District of Port Hudson was established in the Department of the Gulf.

October 8 1863: The District of Baton Rouge was established in the Department of the Gulf.

May 1 1864: The District of Carrollton was established in the Department of the Gulf.

May 7 1864: The Department of the Gulf transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division).

District of Pensacola

(Established, from former Western District of the South, August 8 1862-February 1 1864, discontinued, to District of West Florida)

  • Lewis Golding Arnold (August 8 1862-October 1 1862)
  • Neal S Dow (October 2 1862-January 23 1863)
  • Isaac Dyer (January 24 1863-April 20 1863)
  • William Cune Holbrook (temporary April 21 1863-November 8 1863)
  • Alexander Asboth (November 9 1863-February 1 1864)

August 8 1862: The District of Pensacola was established in the Department of the Gulf, comprising Florida west of the Apalachicola River. The rest of Florida remained in the Department of the South. Brigadier-General Lewis Golding Arnold assumed command of the District of Pensacola.

October 2 1862: Brigadier-General Neal S Dow assumed command of the District of Pensacola, succeeding Brigadier-General Lewis Golding Arnold.

January 24 1863: Colonel Isaac Dyer assumed command of the District of Pensacola, succeeding Brigadier-General Neal S Dow.

April 21 1863: Colonel William Cune Holbrook assumed temporary command of the District of Pensacola, succeeding Colonel Isaac Dyer.

November 9 1863: Brigadier-General Alexander Asboth assumed command of the District of Pensacola, succeeding Colonel William Cune Holbrook.

February 1 1864: The District of Pensacola was discontinued in the Department of the Gulf and its territory transferred to the District of West Florida in the Department of the South.

District of La Fourche

(Established, November 9 1862-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Godfrey Weitzel (November 9 1862-April 29 1863)
  • Henry Warner Birge (April 30 1863-December 31 1863)
  • Edward Leslie Molineux (January 1 1864-January 31 1864)
  • Nicholas Wyckoff Day (February 1 1864-May 3 1864)
  • John McNeil (May 4 1864-May 7 1864)

November 9 1862: The District of La Fourche was established in the Department of the Gulf, comprising the territory west of the Mississippi River and east of the Atchafalaya River in Louisiana. Its authority varied over Bayou Boeuf, Bayou des Allemands, Brashear City, Donaldsonville, Napoleonville, Terre Bonne and Thibodeaux. Brigadier-General Godfrey Weitzel assumed command of the District of La Fourche.

April 30 1863: Colonel Henry Warner Birge assumed command of the District of La Fourche, succeeding Brigadier-General Godfrey Weitzel.

January 1 1864: Colonel Edward Leslie Molineux assumed command of the District of La Fourche, succeeding Brigadier-General Henry Warner Birge.

February 1 1864: Colonel Nicholas Wyckoff Day assumed command of the District of La Fourche, succeeding Colonel Edward Leslie Molineux.

May 4 1864: Brigadier-General John McNeil assumed command of the District of La Fourche, succeeding Colonel Nicholas Wyckoff Day.

May 7 1864: The District of La Fourche transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

Defences of New Orleans

(Established, December 16 1862-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Thomas W Cahill (December 16 1862-January 8 1863)
  • Thomas West Sherman (January 9 1863-August 24 1863)
  • Edward Griffin Beckwith (August 25 1863-January 5 1864)
  • Joseph Jones Reynolds (January 5 1864-May 7 1864)

December 16 1862: The Defences of New Orleans was established in the Department of the Gulf, comprising the vicinity of New Orleans, Louisiana. Colonel Thomas W Cahill assumed command of the Defences of New Orleans.

January 9 1863: Brigadier-General Thomas West Sherman assumed command of the Defences of New Orleans, succeeding Colonel Thomas W Cahill.

August 25 1863: Colonel Edward Griffin Beckwith assumed command of the Defences of New Orleans, succeeding Brigadier-General Thomas West Sherman.

January 6 1864: Major-General Joseph Jones Reynolds assumed command of the Defences of New Orleans, succeeding Colonel Edward Griffin Beckwith.

May 7 1864: The Defences of New Orleans transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

District of Key West and Tortugas

(Established, from Department of the South, March 16 1863-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Daniel Phineas Woodbury (March 16 1865-September 12 1863)
  • Charles Hamilton (temporary September 13 1863-October 14 1863)
  • Daniel Phineas Woodbury (October 15 1863-November 30 1863)
  • Charles Hamilton (temporary December 1 1863-December 30 1863)
  • Daniel Phineas Woodbury (December 31 1863-May 7 1864)

March 16 1863: The District of Key West and Tortugas was established in the Department of the Gulf. The Tortugas and West Florida were transferred from the Department of the South and the remainder of Florida remained in the Department of the South. Brigadier-General Daniel Phineas Woodbury assumed command of the District of Key West and Tortugas.

September 13 1863: Colonel Charles Hamilton assumed temporary command of the District of Key West and Tortugas, succeeding Brigadier-General Daniel Phineas Woodbury.

October 15 1863: Brigadier-General Daniel Phineas Woodbury assumed command of the District of Key West and Tortugas, succeeding Colonel Charles Hamilton.

December 1 1863: Colonel Charles Hamilton assumed temporary command of the District of Key West and the Tortugas, succeeding Brigadier-General Daniel Phineas Woodbury.

December 31 1863: Brigadier-General Daniel Phineas Woodbury assumed command of the District of Key West and Tortugas, succeeding Colonel Charles Smith Hamilton

May 7 1864: The District of Key West and Tortugas transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

District of Port Hudson

(Established, July 9 1863-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • George Leonard Andrews (July 9 1863-January 12 1864)
  • Daniel Ullmann (January 13 1864-May 7 1864)

July 9 1863: The District of Port Hudson was established in the Department of the Gulf, comprising the vicinity of Port Hudson, Louisiana. Brigadier-General George Leonard Andrews assumed command of the District of Port Hudson.

January 13 1864: Brigadier-General Daniel Ullmann assumed command of the District of Port Hudson, succeeding Brigadier-General George Leonard Andrews.

May 7 1864: The District of Port Hudson transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

District of Baton Rouge

(Established, October 8 1863-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Philip St George Cooke (October 8 1863-May 1 1864)
  • Henry Warner Birge (May 2 1864-May 7 1864)

October 8 1863: The District of Baton Rouge was established in the Department of the Gulf, comprising the territory around Baton Rouge, Louisiana. Brigadier-General Philip St George Cooke was appointed to command the District of Baton Rouge.

May 2 1864: Brigadier-General Henry Warner Birge assumed command of the District of Baton Rouge, succeeding Brigadier-General Philip St George Cooke.

May 7 1864: The District of Baton Rouge transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

District of Carrollton

(Established, May 1 1864-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Nelson B Bartram (May 1 1864-May 7 1864)

May 1 1864: The District of Carrollton was established in the Department of the Gulf, comprising the territory around Carrollton, Camp Parapet, De Sair, Fort Banks, Kennerville, Jeffersonville and Pass Manchac, Louisiana. Colonel Nelson B Bartram assumed command of the District of Carrollton.

May 7 1864: The District of Carrollton transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

Army of the Gulf

(Established, February 23 1862-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Benjamin Franklin Butler (February 23 1862-December 14 1862)
  • Nathaniel Prentiss Banks (December 15 1862-May 7 1864)

February 23 1862: The Army of the Gulf was established in the Department of the Gulf. Major-General Benjamin Franklin Butler assumed command of the Army of the Gulf.

December 15 1862: Major-General Nathaniel Prentiss Banks assumed command of the Army of the Gulf, succeeding Major-General Benjamin Franklin Butler.

December 16 1862: XIX Corps (Gulf) was designated in the Army of the Gulf, comprising all field forces in the Department of the Gulf, and confirmed retroactively on 5th January 1863.

January 5 1863: XIX Corps (Gulf) was officially established retrospectively from 14thDecember 1862.

August 7 1863: XIII Corps (Tennessee) transferred from the Army of the Tennessee to the Amy of the Gulf.

May 7 1864: The Army of the Gulf transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

XIX Corps Gulf

(Established, December 16 1862-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Nathaniel Prentiss Banks (December 16 1862-August 19 1863)
  • William Buel Franklin (August 20 1863-May 1 1864)
  • William Hemsley Emory (May 2 1864-May 7 1864)

December 16 1862: XIX Corps (Gulf) was designated in the Army of the Gulf, comprising all field forces in the Department of the Gulf, and confirmed retroactively on 5th January 1863. Major-General Nathaniel Prentiss Banks assumed command of XIX Corps (Gulf).

January 5 1863: XIX Corps (Gulf) was officially established retrospectively from 16thDecember 1862.

August 20 1863: Major-General William Buel Franklin assumed command of XIX Corps (Gulf), succeeding Major-General Nathaniel Prentiss Banks.

May 2 1864: Brigadier-General William Hemsley Emory assumed command of XIX Corps (Gulf), succeeding Major-General William Buel Franklin.

May 7 1864: XIII Corps (Gulf) of transferred with the Army of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

XIII Corps Gulf

(Transferred from Army of the Tennessee, August 7 1863-May 7 1864, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Cadwallader Colden Washburn (August 7 1863-September 14 1863)
  • Edward Otho Cresap Ord (September 15 1863-October 18 1863)
  • Cadwallader Colden Washburn (October 19 1863-October 24 1863)
  • Napoleon Jackson Tecumseh Dana (October 25 1863)
  • Cadwallader Colden Washburn (temporary October 26 1863-January 8 1864)
  • Edward Otho Cresap Ord (January 9 1864-February 19 1864)
  • John Alexander McClernand (February 20 1864-March 14 1864)
  • Thomas Edward Greenfield Ransom (March 15 1864-April 7 1864)
  • Robert Alexander Cameron (April 8 1864-April 26 1864)
  • Michael Kelly Lawler (April 27 1864-May 7 1864)

August 7 1863: XIII Corps (Tennessee) transferred from the Army of the Tennessee to the Army of the Gulf. Major-General Cadwalader Colden Washburn retained command of XIII Corps (Gulf).

September 15 1863: Major-General Edward Otho Cresap Ord assumed command of XIII Corps (Gulf), succeeding Brigadier-General Cadwallader Colden Washburn.

October 19 1863: Major-General Cadwallader Colden Washburn assumed command of XIII Corps (Gulf), succeeding Major-General Edward Otho Cresap Ord.

October 25 1863: Major-General Napoleon Jackson Tecumseh Dana assumed command of XIII Corps (Gulf), succeeding Brigadier-General Cadwallader Colden Washburn.

October 26 1863: Major-General Cadwallader Colden Washburn assumed temporary command of XIII Corps (Gulf), succeeding Major-General Napoleon Jackson Tecumseh Dana.

January 9 1864: Major-General Edward Otho Cresap Ord assumed command of XIII Corps (Gulf), succeeding Brigadier-General Cadwallader Colden Washburn.

February 20 1864: Major-General John Alexander McClernand assumed command of XIII Corps (Gulf), succeeding Major-General Edward Otho Cresap Ord.

March 15 1864: Brigadier-General Thomas Edward Greenfield Ransom assumed command of XIII Corps (Gulf), succeeding Major-General John Alexander McClernand.

April 8 1864: Brigadier-General Robert Alexander Cameron assumed command of XIII Corps (Gulf), succeeding Brigadier-General Thomas Edward Greenfield Ransom.

April 27 1864: Brigadier-General Michael Kelly Lawler assumed command of XIII Corps (Gulf), succeeding Brigadier-General Robert Alexander Cameron.

May 7 1864: XIX Corps (Gulf) of transferred with the Army of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).



Military Division of West Mississippi (Trans-Mississippi Military Division)

Union High Command on May 7 1864 Gulf Coast Theatre

  • Military Division of West Mississippi: Edward Richard Sprigg Canby awaited
    • Department of Arkansas: Nathan Kimball temporary
      • District of Eastern Arkansas: Napoleon Bonaparte Buford
      • District of Northern Arkansas: Robert Ramsey Livingston
      • District of the Frontier: James Gilpatrick Blunt
      • Army of Arkansas: Frederick Steele
        • VII Corps Arkansas: Nathan Kimball temporary
    • Department of the Gulf: Nathaniel Prentiss Banks
      • District of Baton Rouge: Henry Warner Birge
      • District of Port Hudson: Daniel Ullmann
      • District of La Fourche: John McNeil
      • District of Carrollton: Nelson B Bartram
      • District of Key West and Tortugas: Daniel Phineas Woodbury
      • Defences of New Orleans: Joseph Jones Reynolds
      • Army of the Gulf: Nathaniel Prentiss Banks
        • XIII Corps Gulf: Michael Kelly Lawler
        • XIX Corps Gulf: William Hemsley Emory

Established, May 7 1864-May 17 1865, discontinued, interim until June 5 1865, to Military Division of the Southwest)

  • Edward Richard Sprigg Canby (May 7 1864-November 3 1864)
  • Joseph Jones Reynolds (temporary November 4 1864-November 23 1864)
  • Edward Richard Sprigg Canby (November 24 1864-May 17 1865 interim to June 5 1865)

May 7 1864: The Military Division of West Mississippi (Trans-Mississippi Military Division) was established, comprising the Department of the Gulf and the Department of Arkansas. It was also known as the Trans-Mississippi Military Division. Major-General Edward Richard Sprigg Canby was appointed to command the Military Division of West Mississippi (Trans-Mississippi Military Division), arriving on 11th May 1864. The Department of Arkansas transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division). The Department of the Gulf transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division).

May 11 1864: Major-General Edward Richard Sprigg Canby arrived to command the Military Division of West Mississippi (Trans-Mississippi Military Division).

May 27 1864: The Department of the Missouri transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division).

November 4 1864: Major-General Joseph Jones Reynolds assumed temporary command of the Military Division of West Mississippi (Trans-Mississippi Military Division), succeeding Major-General Edward Richard Sprigg Canby.

November 25 1864: Major-General Edward Richard Sprigg Canby assumed command of the Military Division of West Mississippi (Trans-Mississippi Military Division), succeeding Major-General Joseph Jones Reynolds.

November 28 1864: The Department of the Mississippi was established and transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division). It comprised the state of Mississippi and the parts of Tennessee west of the Tennessee River taken from the discontinued Department of the Tennessee.

February 10 1865: The District of Key West and Tortugas was detached from the Department of the Gulf to report directly to the Military Division of West Mississippi (Trans-Mississippi Military Division).

February 18 1865: The Army of West Mississippi was established in the Military Division of West Mississippi (Trans-Mississippi Military Division). The Army of the Gulf transferred to the Army of West Mississippi. The Detachment Army of the Tennessee was discontinued, and reverted to the name XVI Corps (Gulf) and transferred to the Army of the Gulf. XVI Corps (Gulf) was established in the Army of the Gulf.

March 1 1865: The District of West Florida and South Alabama transferred from the Department of the Gulf to the direct control of the Military Division of West Mississippi (Trans-Mississippi Military Division). The Sub-District of West Florida transferred with the District of West Florida and South Alabama from the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

March 17 1865: The District of West Florida and South Alabama was discontinued. Its territory transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) to the Department of the Gulf as the new District of West Florida and the District of South Alabama. The Sub-District of West Florida was discontinued, and its territory assigned to the District of West Florida. The District of South Alabama was established in the Department of the Gulf. The District of West Florida was established in the Department of the Gulf.

March 21 1865: The Department of Arkansas transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) to the Military Division of the Missouri. Major-General Joseph Jones Reynolds retained command of the Department of Arkansas. The District of Eastern Arkansas transferred with the Department of Arkansas to the Military Division of the Missouri. The Army of Arkansas transferred with the Department of Arkansas to the Military Division of the Missouri. VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Missouri.

May 17 1865: The Military Division of the Southwest was established to comprise parts of the Department of Arkansas and the Department of the Gulf, and the state of Texas. The states of Louisiana and Texas were detached from the Department of the Gulf and assigned to the Military Division of the Southwest. Major-General Philip Henry Sheridan was appointed to command the Military Division of the Southwest, arriving on 29th May 1865. The Military Division of West Mississippi (Trans-Mississippi Military Division) was officially discontinued but remained in interim existence until finally disbanded officially on 1st June 1865. The Military Division of West Mississippi (Trans-Mississippi Military Division) retained interim responsibility for the Army of West Mississippi and the Army of the Gulf. Major-General Edward Richard Sprigg Canby retained interim command of the Military Division of West Mississippi (Trans-Mississippi Military Division). The Department of the Gulf was separated from the authority of the discontinued Military Division of West Mississippi (Trans-Mississippi Military Division) and became temporarily autonomous, pending transfer to the Military Division of the Southwest. It took responsibility for Mississippi, Alabama and Florida. The District of Key West and Tortugas was discontinued, and its territory assigned to the Department of the Gulf.

June 3 1865: The Army of West Mississippi was discontinued. The Army of the Gulf transferred from the Army of West Mississippi to the Department of the Gulf. XIII Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf.  XVI Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf.

June 5 1865: The Military Division of West Mississippi (Trans-Mississippi Military Division) was finally disbanded after being officially discontinued on 17th May 1865. The Department of the Mississippi was discontinued. The District of Vicksburg transferred from the Department of the Mississippi to the Department of the Gulf.


Department of the Gulf

Union High Command on May 7 1864 Gulf Coast Theatre

  • Military Division of West Mississippi: Edward Richard Sprigg Canby awaited
    • Department of Arkansas: Nathan Kimball temporary
      • District of Eastern Arkansas: Napoleon Bonaparte Buford
      • District of Northern Arkansas: Robert Ramsey Livingston
      • District of the Frontier: James Gilpatrick Blunt
      • Army of Arkansas: Frederick Steele
        • VII Corps Arkansas: Nathan Kimball temporary
    • Department of the Gulf: Nathaniel Prentiss Banks
      • District of Baton Rouge: Henry Warner Birge
      • District of Port Hudson: Daniel Ullmann
      • District of La Fourche: John McNeil
      • District of Carrollton: Nelson B Bartram
      • District of Key West and Tortugas: Daniel Phineas Woodbury
      • Defences of New Orleans: Joseph Jones Reynolds
      • Army of the Gulf: Nathaniel Prentiss Banks
        • XIII Corps Gulf: Michael Kelly Lawler
        • XIX Corps Gulf: William Hemsley Emory

(Transferred, to Military Division of West Mississippi (Trans-Mississippi Military Division), May 7 1864-May 17 1865, transferred to War Department)

  • Nathaniel Prentiss Banks (May 7 1864-September 21 1864 interim September 22 1864)
  • Stephen Augustus Hurlbut (September 22 1864-March 17 1865 interim to April 21 1865
  • Nathaniel Prentiss Banks (April 22 1865-May 17 1865)

May 7 1864: The Department of the Gulf transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division). Major-General Nathaniel Prentiss Banks retained command of the Department of the Gulf. The District of La Fourche transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). The Defences of New Orleans transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of Key West and Tortugas transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of Port Hudson transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of Baton Rouge transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of Carrollton transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). The Army of the Gulf transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

May 17 1864: The District of West Florida transferred from the Department of the South to the Department of the Gulf.

May 22 1864: The District of Morganza was established in the Department of the Gulf.

August 6 1864: The District of Baton Rouge was discontinued, and re-designated as a Sub-District in the District of Baton Rouge and Port Hudson. The District of Port Hudson was discontinued, and re-designated as a Sub-District in the District of Baton Rouge and Port Hudson. The District of Baton Rouge and Port Hudson was established to comprise the territories of Baton Rouge, Plaquemine, Gaines Landing, Pass Manchac, De Sair and Port Hudson, Louisiana.

September 12 1864: The District of West Florida was discontinued, and renamed as the Sub-District of West Florida. The District of West Florida and South Alabama was established in the Department of the Gulf, comprising the territories of Mobile Bay and Pensacola, Florida. The Sub-District of West Florida was established in the District of West Florida and South Alabama.

September 22 1864: Major-General Stephen Augustus Hurlbut was appointed to command the Department of the Gulf, arriving on 23rd September 1864, to succeed Major-General Nathaniel Prentiss Banks.

September 23 1864: Major-General Stephen Augustus Hurlbut arrived to command the Department of the Gulf, succeeding Major-General Nathaniel Prentiss Banks.

February 9 1865: The Northern District of Louisiana was established in the Department of the Gulf. The Defences of New Orleans was discontinued.

February 10 1865: The District of Key West and Tortugas transferred from the Department of the Gulf and transferred directly to the Military Division of West Mississippi (Trans-Mississippi Military Division).

February 11 1865: The Southern District of Louisiana was established. The District of Carrollton transferred to the Southern District of Louisiana. The District of La Fourche transferred to the Southern District of Louisiana. The District of Morganza transferred to the Northern District of Louisiana.

February 13 1865: The Sub-District of Baton Rouge was discontinued, and its territory transferred to the District of Baton Rouge and Port Hudson. The Sub-District of Port Hudson was discontinued, and its territory transferred to the District of Baton Rouge and the District of Port Hudson. The District of Baton Rouge and Port Hudson was discontinued, and divided into the District of Baton Rouge and the District of Port Hudson. The District of Baton Rouge was established and transferred to the Northern District of Louisiana. The District of Port Hudson was established and transferred to the Northern District of Louisiana.

February 18 1865: The Army of the Gulf transferred to the Army of West Mississippi.

March 1 1865: The District of West Florida and South Alabama transferred from the Department of the Gulf to the direct control of the Military Division of West Mississippi (Trans-Mississippi Military Division). The Sub-District of West Florida transferred with the District of West Florida and South Alabama from the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

March 17 1865: The District of West Florida and South Alabama was discontinued. Its territory transferred to the Department of the Gulf as the new District of West Florida and the District of South Alabama. The Sub-District of West Florida was discontinued, and its territory assigned to the District of West Florida. The District of South Alabama was established in the Department of the Gulf. The District of West Florida was established in the Department of the Gulf.

March 18 1865: Major-General Nathaniel Prentiss Banks was appointed to command the Department of the Gulf, arriving on 22nd April 1865.

March 27 1865: The District of Bonnet Carré was established in the Department of the Gulf. It comprised the territory between Bayou Manchac and Kennerville, Louisiana, west of New Orleans.

April 22 1865: Major-General Nathaniel Prentiss Banks arrived to command the Department of the Gulf, succeeding Major-General Stephen Augustus Hurlbut.

May 17 1865: The Military Division of the Southwest was established to comprise parts of the Department of Arkansas and the Department of the Gulf. The states of Louisiana and Texas were detached from the Department of the Gulf and assigned to the Military Division of the Southwest. Major-General Philip Henry Sheridan was appointed to command the Military Division of the Southwest, arriving on 29thMay 1865. The Military Division of West Mississippi (Trans-Mississippi Military Division) was officially discontinued to be replaced by the Military Division of the Southwest. It remained in interim existence until finally disbanded officially on 1stJune 1865. The Military Division of West Mississippi (Trans-Mississippi Military Division) retained interim responsibility for the Army of West Mississippi and the Army of the Gulf. The Department of the Gulf was separated from the authority of the discontinued Military Division of West Mississippi (Trans-Mississippi Military Division) and became temporarily autonomous with responsibility for Mississippi, Alabama and Florida. The District of South Alabama was discontinued, and its territory incorporated into the District of Alabama. The Northern District of Louisiana transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf. The District of Morganza transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf. The District of Baton Rouge transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf. The District of Port Hudson transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf. The Southern District of Louisiana transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf. The District of Carrollton transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf. The District of La Fourche transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf. The District of West Florida transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf. The District of Bonnet Carré transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf.

District of La Fourche

(Transferred with Department of the Gulf, May 7 1864-February 11 1865, transferred to Southern District of Louisiana)

  • John McNeil (May 7 1864-June 8 1864)
  • Robert Alexander Cameron (June 9 1864-February 11 1865)

May 7 1864: The District of La Fourche transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General John McNeil retained command of the District of La Fourche.

June 9 1864: Brigadier-General Robert Alexander Cameron assumed command of the District of La Fourche, succeeding Brigadier-General John McNeil.

February 11 1865: The District of La Fourche transferred to the Southern District of Louisiana.

Defences of New Orleans

(Transferred with Department of the Gulf, May 7 1864-February 9 1865, discontinued)

  • Joseph Jones Reynolds May 7 1864-June 15 1864)
  • Thomas West Sherman (June 16 1864-February 9 1865)

May 7 1864: The Defences of New Orleans transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Major-General Joseph Jones Reynolds retained command of the Defences of New Orleans.

June 16 1864: Brigadier-General Thomas West Sherman assumed command of the Defences of New Orleans succeeding Major-General Joseph Jones Reynolds.

February 9 1865: The Defences of New Orleans was discontinued.

District of Key West and Tortugas

(Transferred with Department of the Gulf, May 7 1864-February 10 1865, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Daniel Phineas Woodbury (May 7 1864-August 14 1864)
  • Vacant (August 15 1864-October 14 1864)
  • John Newton (October 15 1864-February 10 1865)

May 7 1864: The District of Key West and Tortugas transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Daniel Phineas Woodbury retained command of the District of Key West and Tortugas.

August 15 1864: Command of the District of Key West and Tortugas became vacant.

October 15 1864: Brigadier-General John Newton assumed command of the District of Key West and Tortugas, following a vacancy.

February 10 1865: The District of Key West and Tortugas transferred from the Department of the Gulf and transferred directly to the Military Division of West Mississippi (Trans-Mississippi Military Division).

District of Port Hudson

(Transferred with Department of the Gulf, May 7 1864-August 6 1864, discontinued, to District of Baton Rouge and Port Hudson)

  • Daniel Ullmann (May 7 1864-June 22 1864)
  • John McNeil (June 23 1864-August 6 1864)

May 7 1864: The District of Port Hudson transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Daniel Ullmann retained command of the District of Port Hudson.

June 23 1864: Brigadier-General John McNeil assumed command of the District of Port Hudson, succeeding Brigadier-General Daniel Ullmann.

August 6 1864: The District of Port Hudson was discontinued, and re-designated as a Sub-District in the District of Baton Rouge and Port Hudson, in the Department of the Gulf.

District of Baton Rouge

(Transferred with Department of the Gulf, May 7 1864-August 6 1864, discontinued, to District of Baton Rouge and Port Hudson)

  • Henry Warner Birge (May 7 1864-May 14 1864)
  • William Plummer Benton (May 15 1864-May 30 1864)
  • Fitz-Henry Warren (May 31 1864-June 12 1864)
  • William Plummer Benton (June 13 1864-August 16 1864)

May 7 1864: The District of Baton Rouge transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Henry Warner Birge retained command of Baton Rouge.

May 15 1864: Brigadier-General William Plummer Benton assumed command of the District of Baton Rouge, succeeding Brigadier-General Henry Warner Birge.

May 31 1864: Brigadier-General Fitz-Henry Warren assumed command of the District of Baton Rouge, succeeding Brigadier-General William Plummer Benton.

June 13 1864: Brigadier-General William Plummer Benton assumed command of the District of Baton Rouge, succeeding Brigadier-General Fitz-Henry Warren.

August 6 1864: The District of Baton Rouge was discontinued, and re-designated as a Sub-District in the District of Baton Rouge and Port Hudson, in the Department of the Gulf.

District of Carrollton

(Transferred with Department of the Gulf, May 7 1864-February 11 1865, discontinued, to Southern District of Louisiana)

  • Nelson B Bartram (May 7 1864-September 30 1864)
  • Nelson Viall (October 1 1864-February 11 1865)

May 7 1864: The District of Carrollton transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Colonel Nelson B Bartram retained command of Carrollton.

October 1 1864: Lieutenant-Colonel Nelson Viall assumed command of the District of Carrollton, succeeding Colonel Nelson B Bartram.

February 11 1865: The District of Carrollton transferred to the Southern District of Louisiana.

District of West Florida

(Transferred from Department of the South, May 17 1864-September 12 1864, discontinued, to Sub-District of West Florida)

  • Alexander Asboth (May 17 1864-September 12 1864)

May 17 1864: The District of West Florida transferred from the Department of the South to the Department of the Gulf. Brigadier-General Alexander Asboth retained command of the District of West Florida.

September 12 1864: The District of West Florida was discontinued and renamed as the Sub-District of West Florida.

District of Morganza

(Established, May 22 1864-February 11 1865, transferred to Northern District of Louisiana)

  • William Hemsley Emory (May 22 1864-June 15 1864)
  • Joseph Jones Reynolds (June 16 1864-July 4 1864)
  • Michael Kelly Lawler (July 5 1864-October 29 1864)
  • George Francis McGinnis (October 30 1864-November 22 1864)
  • Daniel Ullmann (November 23 1864-February 11 1865)

May 22 1864: The District of Morganza was established in the Department of the Gulf. Brigadier-General William Hemsley Emory assumed command of the District of Morganza.

June 16 1864: Major-General Joseph Jones Reynolds assumed command of the District of Morganza, succeeding Brigadier-General William Hemsley Emory.

July 5 1864: Brigadier-General Michael Kelly Lawler assumed command of the District of Morganza, succeeding Major-General Joseph Jones Reynolds.

October 30 1864: Brigadier-General George Francis McGinnis assumed command of the District of Morganza, succeeding Brigadier-General Michael Kelly Lawler.

November 23 1864: Brigadier-General Daniel Ullmann assumed command of the District of Morganza, succeeding Brigadier-General George Francis McGinnis.

February 11 1865: The District of Morganza transferred to the Northern District of Louisiana.

District of Baton Rouge and Port Hudson

(Established, from District of Baton Rouge and District of Port Hudson, August 6 1864-February 13 1865, discontinued, to Baton Rouge and District of Port Hudson)

  • Francis Jay Herron (August 6 1864-October 29 1864)
  • William Plummer Benton (October 30 1864-December 25 1864)
  • George Leonard Andrews (December 26 1864-February 13 1865)

August 6 1864: The District of Baton Rouge and Port Hudson was established to comprise the territories of Baton Rouge, Plaquemine, Gaines Landing, Pass Manchac, De Sair and Port Hudson, Louisiana. Major-General Francis Jay Herron assumed command of the District of Baton Rouge and Port Hudson. The Sub-District of Baton of Baton Rouge was established in the District of Baton Rouge and Port Hudson. The Sub-District of Port Hudson was established in the District of Baton Rouge and Port Hudson.

October 30 1864: Brigadier-General William Plummer Benton assumed command of the District of Baton Rouge and Port Hudson, succeeding Major-General Francis Jay Herron.

December 26 1864: Brigadier-General George Leonard Andrews assumed command of the District of Baton Rouge and Port Hudson, succeeding Brigadier-General William Plummer Benton.

February 13 1865: The Sub-District of Baton Rouge was discontinued, and its territory transferred to the District of Baton Rouge and Port Hudson. The Sub-District of Port Hudson was discontinued, and its territory transferred to the District of Baton Rouge and Port Hudson. The District of Baton Rouge and Port Hudson was discontinued, and divided into the District of Baton Rouge and the District of Port Hudson

Sub-District of Baton Rouge

(Established, from District of Baton Rouge, August 6 1864-February 13 1865, discontinued, to District of Baton Rouge)

  • William Plummer Benton (August 6 1864-October 2 1864)
  • William Jennings Landram (October 3 1864-December 2 1864)
  • Joseph Bailey (December 3 1864-February 13 1865)

August 6 1864: The Sub-District of Baton of Baton Rouge was established in the District of Baton Rouge and Port Hudson. Brigadier-General William Plummer Benton retained command of the Sub-District of Baton Rouge.

October 3 1864: Colonel William Jennings Landram assumed command of the Sub-District of Baton Rouge, succeeding Brigadier-General William Plummer Benton.

December 3 1864: Brigadier-General Joseph Bailey assumed command of the Sub-District of Baton Rouge, succeeding Colonel William Jennings Landram.

February 13 1865: The Sub-District of Baton Rouge was discontinued, and its territory transferred to the District of Baton Rouge and Port Hudson.

Sub-District of Port Hudson

(Established, from District of Port Hudson, August 6 1864-February 13 1865, discontinued, to District of Port Hudson)

  • George Leonard Andrews (August 6 1864-December 25 1864)
  • Charles Wilson Drew (December 26 1864-February 13 1865)

August 6 1864: The Sub-District of Port Hudson was established in the District of Baton Rouge and Port Hudson. Brigadier-General George Leonard Andrews assumed command of the Sub-District of Port Hudson, succeeding Brigadier-General John McNeil.

December 26 1864: Colonel Charles Wilson Drew assumed command of the Sub-District of Port Hudson, succeeding Brigadier-General George Leonard Andrews.

February 13 1865: The Sub-District of Port Hudson was discontinued, and its territory transferred to the District of Baton Rouge and Port Hudson.

District of West Florida and South Alabama

(Established, from District of West Florida, September 12 1864– March 1 1865, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Gordon Granger (September 12 1864– March 1 1865)

September 12 1864: The District of West Florida and South Alabama was established in the Department of the Gulf, comprising the territories of Mobile Bay and Pensacola, Florida. Major-General Gordon Granger assumed command of the District of West Florida and South Alabama. The Sub-District of West Florida was established in the District of West Florida and South Alabama.

March 1 1865: The District of West Florida and South Alabama transferred from the Department of the Gulf to the direct control of the Military Division of West Mississippi (Trans-Mississippi Military Division). The Sub-District of West Florida transferred with the District of West Florida and South Alabama from the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

Sub-District of West Florida

(Established, from District of West Florida, September 12 1864-March 1 1865, transferred to Military Division of West Mississippi (Trans-Mississippi Military Division))

  • Alexander Asboth (September 12 1864-September 26 1864)
  • Joseph Bailey (September 27 1864-November 24 1864)
  • Thomas Jefferson McKean (November 25 1864-February 14 1865)
  • Alexander Asboth (February 15 1865-March 1 1865)

September 12 1864: The Sub-District of West Florida was established in the District of West Florida and South Alabama. Brigadier-General Alexander Asboth retained command of the Sub-District of West Florida.

September 27 1864: Colonel Joseph Bailey assumed command of the Sub-District of West Florida, succeeding Brigadier-General Alexander Asboth.

November 25 1864: Brigadier-General Thomas Jefferson McKean assumed command of the Sub-District of West Florida, succeeding Brigadier-General Joseph Bailey.

February 15 1865: Brigadier-General Alexander Asboth assumed command of the Sub-District of West Florida, succeeding Brigadier-General Thomas Jefferson McKean.

March 1 1865: The Sub-District of West Florida transferred with the District of West Florida and South Alabama from the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

Northern District of Louisiana

(Established, from Military Division of West Mississippi (Trans-Mississippi Military Division, February 9 1865-May 17 1865, transferred to War Department)

  • Francis Jay Herron (February 9 1865-May 17 1865)

February 9 1865: The Northern District of Louisiana was established in the Department of the Gulf. Brigadier-General Francis Jay Herron assumed command of the Northern District of Louisiana.

February 11 1865: The District of Morganza transferred to the Northern District of Louisiana.

February 13 1865: The District of Baton Rouge was established and transferred to the Northern District of Louisiana. The District of Port Hudson was established and transferred to the Northern District of Louisiana in the Department of the Gulf.

May 17 1865: The Northern District of Louisiana transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf.

District of Morganza

(Transferred from Department of the Gulf, February 11 1865-May 17 1865, transferred to War Department)

  • Daniel Ullmann (February 11 1865-February 25 1865)
  • Henry William Fuller (February 26 1865)
  • Edmund Jackson Davis (February 27 1865-March 1 1865)
  • Thomas Jefferson McKean (March 2 1865-April 26 1865)
  • William Henry Dickey (April 27 1865-May 17 1865)

February 11 1865: The District of Morganza transferred to the Northern District of Louisiana. Brigadier-General Daniel Ullmann retained command of the District of Morganza.

February 26 1865: Colonel Henry William Fuller assumed command of the District of Morganza, succeeding Brigadier-General Daniel Ullmann.

February 27 1865: Brigadier-General Edmund Jackson Davis assumed command of the District of Morganza, succeeding Colonel William Henry Fuller.

March 2 1865: Brigadier-General Thomas Jefferson McKean assumed command of the District of Morganza, succeeding Brigadier-General Edmund Jackson Davis.

April 27 1865: Colonel William Henry Dickey assumed command of the District of Morganza, succeeding Brigadier-General Thomas Jefferson McKean.

May 17 1865: The District of Morganza transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Northern District of Louisiana.

District of Baton Rouge

(Established, from District of Baton Rouge and Port Hudson, February 13 1865-May 17 1865, transferred to War Department)

  • Joseph Bailey (February 13 1865-March 10 1865)
  • Edmund Jackson Davis (March 11 1865-March 17 1865)
  • John Giles Fonda (March 18 1865-March 22 1865)
  • Michael Kelly Lawler (March 23 1865May 17 1865)

February 13 1865: The District of Baton Rouge and Port Hudson was discontinued, and divided into the District of Baton Rouge and the District of Port Hudson. The District of Baton Rouge was established and transferred to the Northern District of Louisiana. Brigadier-General Joseph Bailey retained command of the District of Baton Rouge.

March 11 1865: Brigadier-General Edmund Jackson Davis assumed command of the District of Baton Rouge, succeeding Brigadier-General Joseph Bailey.

March 18 1865: Colonel John Giles Fonda assumed command of the District of Baton Rouge, succeeding Brigadier-General Edmund Jackson Davis.

March 23 1865: Brigadier-General Michael Kelly Lawler assumed command of the District of Baton Rouge, succeeding Colonel John Giles Fonda.

May 17 1865: The District of Baton Rouge transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Northern District of Louisiana.

District of Port Hudson

(Established, from District of Baton Rouge and Port Hudson, February 13 1865-May 17 1865, transferred to War Department)

  • Charles Wilson Drew (February 13 1865-February 19 1865)
  • Cyrus Hamlin (February 20 1865-May 17 1865)

February 13 1865: The District of Baton Rouge and Port Hudson was discontinued, and divided into the District of Baton Rouge and the District of Port Hudson. The District of Port Hudson was established and transferred to the Northern District of Louisiana in the Department of the Gulf. Colonel Charles Wilson Drew retained command of the District of Port Hudson.

February 20 1865: Brigadier-General Cyrus Hamlin assumed command of the District of Port Hudson, succeeding Colonel Charles Wilson Drew.

May 17 1865: The District of Port Hudson transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Northern District of Louisiana.

Southern District of Louisiana

(Established, February 11 1865-May 17 1865, transferred to War Department)

  • Thomas West Sherman (February 11 1865-May 17 1865)

February 11 1865: The Southern District of Louisiana was established. Brigadier-General Thomas West Sherman assumed command of the Southern District of Louisiana. The District of Carrollton transferred to the Southern District of Louisiana. The District of La Fourche transferred to the Southern District of Louisiana.

May 17 1865: The Southern District of Louisiana transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf.

District of Carrollton

(Transferred from Department of the Gulf, February 11 1865-May 17 1865, transferred to War Department)

  • Nelson Viall (February 11 1865-March 31 1865)
  • William S Mudgett (April 1 1865-May 17 1865)

February 11 1865: The District of Carrollton transferred to the Southern District of Louisiana. Lieutenant-Colonel Nelson Viall retained command of the District of Carrollton.

April 1 1865: Colonel William S Mudgett assumed command of the District of Carrollton, succeeding Lieutenant-Colonel Nelson Viall.

May 17 1865: The District of Carrollton transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Southern District of Louisiana.

District of La Fourche

(Transferred from Department of the Gulf, February 11 1865-May 17 1865, transferred to War Department)

  • Robert Alexander Cameron (February 11 1865-May 17 1865)

February 11 1865: The District of La Fourche transferred to the Southern District of Louisiana. Brigadier-General Robert Alexander Cameron retained command of the District of La Fourche.

May 17 1865: The District of La Fourche transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Southern District of Louisiana.

District of West Florida

(Established, from District of West Florida and South Alabama, March 17 1865-May 17 1865, transferred to War Department)

  • Alexander Asboth (March 17 1865-May 17 1865)

March 17 1865: The District of West Florida and South Alabama was discontinued, and its territory transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) to the Department of the Gulf as District of West Florida and the District of South Alabama. The District of West Florida was established in the Department of the Gulf. Brigadier-General Alexander Asboth assumed command of the District of West Florida.

May 17 1865: The District of West Florida transferred with the Department of the Gulf and transferred to the direct control of the War Department.

District of South Alabama

(From Military Division of West Mississippi (Trans-Mississippi Military Division), March 17 1865-May 17 1865, to District of Alabama)

  • Thomas Kilby Smith (March 17 1865-May 17 1865)

March 17 1865: The District of West Florida and South Alabama was discontinued. Its territory transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) to the Department of the Gulf as the new District of West Florida and the District of South Alabama. The District of South Alabama was established in the Department of the Gulf. Brigadier-General Thomas Kilby Smith assumed command of the District of South Alabama.

May 17 1865: The District of South Alabama was discontinued, and its territory incorporated into the District of Alabama.

District of Bonnet Carré

(Established, March 27 1865-May 17 1865, transferred to War Department)

  • Charles Everett (March 27 1865-March 31 1865), James J Byrne (April 1 1865-May 17 1865)

March 27 1865: The District of Bonnet Carré was established in the Department of the Gulf. It comprised the territory between Bayou Manchac and Kennerville, Louisiana, west of New Orleans. Colonel Charles Everett assumed command of the District of Bonnet Carré.

April 1 1865: Colonel James J Byrne assumed command of the District of Bonnet Carré, succeeding Colonel Charles Everett.

May 17 1865: The District of Bonnet Carré transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division with the Department of the Gulf.

Army of the Gulf

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division), May 7 1864-February 18 1865, transferred to Army of West Mississippi)

  • Nathaniel Prentiss Banks (May 7 1864-September 22 1864)
  • Stephen Augustus Hurlbut (temporary September 23 1864-February 18 1865)

May 7 1864: The Army of the Gulf transferred with the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Major-General Nathaniel Prentiss Banks retained command of the Army of the Gulf

June 11 1863: XIII Corps (Gulf) was discontinued, and most its forces assigned to form Reserve Corps (Gulf). Reserve Corps (Gulf) was established in the Department of the Gulf.

September 23 1864: Major-General Stephen Augustus Hurlbut assumed temporary command of the Army of the Gulf, succeeding Major-General Nathaniel Prentiss Banks.

November 7 1864: XIX Corps (Gulf) was discontinued. The elements of 1st Division and 2nd Division, known as ‘Detachment XIX Corps’ while serving in the Shenandoah Valley were officially designated XIX Corps (Shenandoah). The 3rdDivision remained in Louisiana with the interim title XIX Corps (Gulf).

January 17 1865: Reserve Corps (Gulf) was discontinued.

February 18 1865: The Army of the Gulf transferred to the Army of West Mississippi. XIII Corps (Gulf) was established in the Army of the Gulf, composed largely of troops previously in Reserve Corps (Gulf).

XIX Corps Gulf

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division), May 7 1864-November 7 1864, transferred to XIII Corps Shenandoah)

  • William Hemsley Emory (May 7 1864-July 1 1864)
  • Benjamin Stone Roberts (temporary July 2 1864-July 5 1864)
  • Michael Kelly Lawler (temporary July 6 1864)
  • Joseph Jones Reynolds (July 7 1864-November 7 1864)

May 7 1864: XIX Corps (Gulf) transferred with the Army of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General William Hemsley Emory retained command of XIX Corps (Gulf).

July 2 1864: Brigadier-General Benjamin Stone Roberts assumed temporary command of XIX Corps (Gulf), succeeding Brigadier-General William Hemsley Emory.

July 6 1864: Brigadier-General Michael Kelly Lawler assumed temporary command of XIX Corps (Gulf), succeeding Brigadier-General Benjamin Stone Roberts.

July 7 1864: Major-General Joseph Jones Reynolds assumed command of XIX Corps (Gulf), succeeding Brigadier-General Michael Kelly Lawler.

November 7 1864: XIX Corps (Gulf) was discontinued. The elements of 1st Division and 2nd Division, known as ‘Detachment XIX Corps’ while serving in the Shenandoah Valley were officially designated XIX Corps (Shenandoah). The 3rdDivision remained in Louisiana with the interim title XIX Corps (Gulf). Major-General Joseph Jones Reynolds retained interim command of XIX Corps (Gulf).

XIII Corps Gulf

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division), May 7 1864-June 11 1864, discontinued, to Reserve Corps Gulf)

  • Michael Kelly Lawler (May 7 1864-May 8 1864)
  • William Plummer Benton (May 9 1864-June 11 1864)

May 7 1864: XIII Corps (Gulf) transferred with the Army of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Michael Kelly Lawler retained command of XIII Corps (Gulf).

May 9 1864: Brigadier-General William Plummer Benton assumed command of XIII Corps (Gulf), succeeding Brigadier-General Michael Kelly Lawler.

June 11 1863: XIII Corps (Gulf) was discontinued, and most its forces assigned to form Reserve Corps (Gulf).

Reserve Corps Gulf

(Established, from XIII Corps Gulf, June 11 1864-January 17 1865, discontinued, to XIII Corps (Gulf) February 18 1865)

  • Gordon Granger (June 11 1864-January 17 1865)

June 11 1864: Reserve Corps (Gulf) was established in the Department of the Gulf. Major-General Gordon Granger assumed command of Reserve Corps (Gulf).

January 17 1865: Reserve Corps (Gulf) was discontinued.

February 18 1865: XIII Corps (Gulf) was established in the Army of the Gulf, composed largely of troops previously in Reserve Corps (Gulf).


Department of Arkansas

Union High Command on May 7 1864 Gulf Coast Theatre

  • Military Division of West Mississippi: Edward Richard Sprigg Canby awaited
    • Department of Arkansas: Nathan Kimball temporary
      • District of Eastern Arkansas: Napoleon Bonaparte Buford
      • District of Northern Arkansas: Robert Ramsey Livingston
      • District of the Frontier: James Gilpatrick Blunt
      • Army of Arkansas: Frederick Steele
        • VII Corps Arkansas: Nathan Kimball temporary
    • Department of the Gulf: Nathaniel Prentiss Banks
      • District of Baton Rouge: Henry Warner Birge
      • District of Port Hudson: Daniel Ullmann
      • District of La Fourche: John McNeil
      • District of Carrollton: Nelson B Bartram
      • District of Key West and Tortugas: Daniel Phineas Woodbury
      • Defences of New Orleans: Joseph Jones Reynolds
      • Army of the Gulf: Nathaniel Prentiss Banks
        • XIII Corps Gulf: Michael Kelly Lawler
        • XIX Corps Gulf: William Hemsley Emory

(Transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division), May 7 1864-March 21 1865, transferred to Military Division of the Missouri)

  • Nathan Kimball (temporary May 7 1864-May 21 1864)
  • Frederick Steele (May 22 1864-December 21 1864)
  • Joseph Jones Reynolds (December 22 1864-March 21 1865)

May 7 1864: The Department of Arkansas transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Nathan Kimball retained temporary command of the Department of Arkansas. The District of Northern Arkansas transferred with the Department of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of the Frontier transferred with the Department of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of Eastern Arkansas transferred with the Department of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division). The Army of Arkansas transferred with the Department of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division). VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division).

May 11 1864: The District of Little Rock was established in the Department of Arkansas.

May 22 1864: Major-General Frederick Steele assumed command of the Department of Arkansas, succeeding Brigadier-General Nathan Kimball.

June 1 1864: The District of Northern Arkansas was discontinued.

December 22 1864: Major-General Joseph Jones Reynolds assumed command of the Department of Arkansas, succeeding Major-General Frederick Steele.

February 1 1865: The District of the Frontier was discontinued.

February 4 1865: The District of Little Rock was discontinued.

March 21 1865: The Department of Arkansas transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) to the Military Division of the Missouri. The District of Eastern Arkansas transferred with the Department of Arkansas to the Military Division of the Missouri. The Army of Arkansas transferred with the Department of Arkansas to the Military Division of the Missouri. VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Missouri.

District of Northern Arkansas

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division), May 7 1864-June 1 1864, discontinued)

  • Robert Ramsey Livingston (May 7 1864-June 1 1864)

May 7 1864: The District of Northern Arkansas transferred with the Department of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division). Colonel Robert Ramsey Livingston retained command of the District of Northern Arkansas.

June 1 1864: The District of Northern Arkansas was discontinued.

District of the Frontier

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division) May 7 1864-February 1 1865, discontinued)

  • James Gilpatrick Blunt (May 7 1864-May 18 1864)
  • John Milton Thayer (May 19 1864-February 1 1865)

May 7 1864: The District of the Frontier transferred with the Department of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General James Gilpatrick Blunt retained command of the District of the Frontier.

May 19 1864: Brigadier-General John Milton Thayer assumed command of the District of the Frontier, succeeding Major-General James Gilpatrick Blunt.

February 1 1865: The District of the Frontier in the Department of Arkansas was discontinued.

District of Eastern Arkansas

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division) May 7 1864-March 21 1865, transferred to Military Division of the Missouri)

  • Napoleon Bonaparte Buford (May 7 1864-August 5 1864)
  • William Crooks (temporary August 6 1864-September 27 1864)
  • Napoleon Bonaparte Buford (September 28 1864-October 6 1864)
  • William Crooks (temporary October 7 1864-October 18 1864),
  • Napoleon Bonaparte Buford (October 19 1864-March 8 1865),
  • lexander McDowell McCook (March 9 1865-March 21 1865)

May 7 1864: The District of Eastern Arkansas transferred with the Department of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Napoleon Bonaparte Buford retained command of the District of Eastern Arkansas.

August 6 1864: Colonel William Crooks assumed temporary command of the District of Eastern Arkansas, succeeding Brigadier-General Napoleon Bonaparte Buford.

September 28 1864: Brigadier-General Napoleon Bonaparte Buford assumed command of the District of Eastern Arkansas, succeeding Colonel William Crooks.

October 7 1864: Colonel William Crooks assumed temporary command of the District of Eastern Arkansas, succeeding Brigadier-General Napoleon Bonaparte Buford.

October 19 1864: Brigadier-General Napoleon Bonaparte Buford assumed command of the District of Eastern Arkansas, succeeding Colonel William Crooks.

March 9 1865: Major-General Alexander McDowell McCook assumed command of the District of Eastern Arkansas, succeeding Brigadier-General Napoleon Bonaparte Buford.

March 21 1865: The District of Eastern Arkansas transferred with the Department of Arkansas to the Military Division of the Missouri.

District of Little Rock

(Established, May 11 1864-February 4 1865, discontinued)

  • Eugene Asa Carr (May 11 1864-February 4 1865)

May 11 1864: The District of Little Rock was established in the Department of Arkansas, comprising the posts of Little Rock, Lewisburg and Pine Bluff. Brigadier-General Eugene Asa Carr assumed command of the District of Little Rock.

February 4 1865: The District of Little Rock in the Department of Arkansas was discontinued.

Army of Arkansas

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division) May 7 1864-March 21 1865, transferred to Military Division of the Missouri)

  • Frederick Steele (May 7 1864-December 21 1864)
  • Joseph Jones Reynolds (December 22 1864-March 21 1865)

May 7 1864: The Army of Arkansas transferred with the Department of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division). Major-General Frederick Steele retained command of the Army of Arkansas.

December 22 1864: Major-General Joseph Jones Reynolds assumed command of the Army of Arkansas, succeeding Major-General Frederick Steele.

March 21 1865: The Army of Arkansas transferred with the Department of Arkansas to the Military Division of the Missouri. VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Missouri.

VII Corps Arkansas

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division) May 7 1864-March 21 1865, transferred to Military Division of the Missouri)

  • Nathan Kimball (temporary May 7 1864-May 21 1864)
  • Frederick Steele (May 22 1864-December 21 1864)
  • Joseph Jones Reynolds (December 22 1864-March 21 1865)

May 7 1864: VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Nathan Kimball retained temporary command of VII Corps (Arkansas),

May 22 1864: Major-General Frederick Steele assumed command of VII Corps (Arkansas), succeeding Brigadier-General Nathan Kimball.

December 22 1864: Major-General Joseph Jones Reynolds assumed command of VII Corps (Arkansas), succeeding Major-General Frederick Steele.

March 21 1865: VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Missouri.


Department of the Missouri

Union High Command on May 27 1864

  • Military Division of West Mississippi: Edward Richard Sprigg Canby
    • Department of Arkansas: Frederick Steele
      • District of Eastern Arkansas: Napoleon Bonaparte Buford
      • District of Northern Arkansas: Robert Ramsey Livingston
      • District of Little Rock: Eugene Asa Carr
      • District of the Frontier: John Milton Thayer
      • Army of Arkansas: Frederick Steele
        • VII Corps Arkansas: Frederick Steele
    • Department of the Gulf: Nathaniel Prentiss Banks
      • District of Baton Rouge: William Plummer Benton
      • District of Port Hudson: Daniel Ullmann
      • District of La Fourche: John McNeil
      • District of Morganza: William Hemsley Emory
      • District of Carrollton: Nelson B Bartram
      • District of West Florida: Alexander Asboth
      • District of Key West and Tortugas: Daniel Phineas Woodbury
      • Defences of New Orleans: Joseph Jones Reynolds
      • Army of the Gulf: Nathaniel Prentiss Banks
        • XIII Corps Gulf: William Plummer Benton
        • XIX Corps Gulf: William Hemsley Emory
    • Department of the Missouri: William Starke Rosecrans
      • District of St Louis: vacant
      • District of Southwest Missouri: John Benjamin Sanborn
      • District of North Missouri: Clinton Bowen Fisk
      • District of Central Missouri: Egbert Benson Brown
      • District of Rolla: Odon Guitar

Transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division), May 27 1864-January 30 1865, transferred to Military Division of the Missouri)

  • William Starke Rosecrans (May 27 1864-December 1 1864 interim to December 8 1864)
  • Grenville Mellen Dodge (December 2 1864-January 30 1865)

May 27 1864: The Department of the Missouri transferred to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of St Louis transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of Southwest Missouri transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of Central Missouri transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). The District of Rolla transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). The Distinct of North Missouri transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). Major-General William Starke Rosecrans retained command of the Department of the Missouri.

August 18 1864: The southern border of the District of Southwest Missouri was redefined as the Missouri-Arkansas state line.

December 2 1864: Major-General Grenville Mellen Dodge was appointed to command the Department of the Missouri, arriving on 9th December 1864, to succeed Major-General William Starke Rosecrans.

December 9 1864: Major-General Grenville Mellen Dodge arrived to command the Department of the Missouri, succeeding Major-General William Starke Rosecrans.

December 26 1864: The northern border of the District of Southwest Missouri was re-defined as the Osage River.

January 30 1865: The Military Division of the Missouri was established. It included the Department of the Northwest and the Department of the Missouri. The Department of the Missouri transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) to the Military Division of the Missouri. The District of St Louis transferred with the Department of the Missouri to the Military Division of the Missouri. The District of Southwest Missouri transferred with the Department of the Missouri to the Military Division of the Missouri. The District of Central Missouri transferred with the Department of the Missouri to the Military Division of the Missouri. The District of Rolla transferred with the Department of the Missouri to the Military Division of the Missouri. The District of North Missouri transferred with the Department of the Missouri to the Military Division of the Missouri.

District of St Louis

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division), May 27 1864-January 30 1865, transferred to Military Division of the Missouri)

  • Vacant (May 27 1864-July 23 1864)
  • Alfred Pleasonton (July 24 1864-December 8 1864)
  • George Day Wagner (December 9 1864-January 30 1865)

May 27 1864: The District of St Louis transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). Command of the District of St Louis remained vacant.

July 24 1864: Major-General Alfred Pleasonton assumed command of the District of St Louis after a vacancy.

December 9 1864: Brigadier-General George Day Wagner assumed command of the District of St Louis, succeeding Major-General Alfred Pleasonton.

January 30 1865: The District of St Louis transferred with the Department of the Missouri to the Military Division of the Missouri.

District of Southwest Missouri

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division), May 27 1864-January 30 1865, transferred to Military Division of the Missouri)

  • John Benjamin Sanborn (May 27 1864-December 8 1864)
  • Joseph Jackson Gravely (temporary December 9 1864-January 8 1865)
  • John Benjamin Sanborn (January 9 1865-January 30 1865)

May 27 1864: The District of Southwest Missouri transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General John Benjamin Sanborn retained command of the District of Southwest Missouri.

August 18 1864: The southern border of the District of Southwest Missouri was redefined as the Missouri-Arkansas state line.

December 9 1864: Colonel Joseph Jackson Gravely assumed temporary command of the District of Southwest Missouri, succeeding Brigadier-General John Benjamin Sanborn.

December 26 1864: The northern border of the District of Southwest Missouri was re-defined as the Osage River.

January 9 1865: Brigadier-General John Benjamin Sanborn assumed command of the District of Southwest Missouri, succeeding Colonel Joseph Jackson Gravely.

January 30 1865: The District of Southwest Missouri transferred with the Department of the Missouri to the Military Division of the Missouri.

District of Central Missouri

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division), May 27 1864-January 30 1865, transferred to Military Division of the Missouri)

  • Egbert Benson Brown (May 27 1864-July 23 1864)
  • Alfred Pleasonton (July 24 1864-September 2 1864)
  • Egbert Benson Brown (September 3 1864-November 2 1864)
  • John Finis Philips (November 3 1864-February 26 1865)
  • John McNeil (February 27 1865-April 11 1865)
  • Chester Harding (April 25 1865-January 30 1865)

May 27 1864: The District of Central Missouri transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Egbert Benson Brown retained command of the District of Central Missouri.

July 24 1864: Major-General Alfred Pleasonton assumed command of the District of Central Missouri, succeeding Brigadier-General Egbert Benson Brown.

September 3 1864: Brigadier-General Egbert Benson Brown assumed command of the District of Central Missouri, succeeding Major-General Alfred Pleasonton.

November 3 1864: Colonel John Finis Philips assumed command of the District of Central Missouri, succeeding Brigadier-General Egbert Benson Brown.

January 30 1865: The District of Central Missouri transferred with the Department of the Missouri to the Military Division of the Missouri.

February 27 1865: Brigadier-General John McNeil assumed command of the District of Central Missouri, succeeding Colonel John Finis Philips.

April 12 1865: State Colonel Chester Harding assumed command of the District of Central Missouri, succeeding Brigadier-General John McNeil.

January 30 1865: The District of Central Missouri transferred with the Department of the Missouri to the Military Division of the Missouri.

District of Rolla

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division), May 27 1864-January 30 1865, transferred to Military Division of the Missouri)

  • Odon Guitar (May 27 1864-August 22 1864)
  • John McNeil (August 23 1864-October 3 1864)
  • Albert Sigel (October 4 1864-November 2 1864)
  • John Finis Philips (November 3 1864-November 27 1864)
  • Albert Sigel (November 28 1864-December 1 1864)
  • Edwin C Catherwood (December 2 1864-January 4 1865)
  • Egbert Benson Brown (January 5 1865-January 30 1865)

May 27 1864: The District of Rolla transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). Colonel Odon Guitar retained command of the District of Rolla.

August 23 1864: Brigadier-General John McNeil assumed command of the District of Rolla, succeeding State Brigadier-General Odon Guitar.

October 4 1864: State Colonel Albert Sigel assumed temporary command of the District of Rolla, succeeding Brigadier-General John McNeil.

November 3 1864: Colonel John Finis Philips assumed command of the District of Rolla, succeeding Colonel Albert Sigel.

November 28 1864: Colonel Albert Sigel assumed temporary command of the District of Rolla, succeeding State Colonel John Finis Phillips.

December 2 1864: Missouri State Colonel Edwin C Catherwood assumed temporary command of the District of Rolla, succeeding Colonel Albert Sigel.

January 5 1865: Brigadier-General Egbert Benson Brown assumed command of the District of Rolla, succeeding Colonel Edward C Catherwood.

January 30 1865: The District of Rolla transferred with the Department of the Missouri to the Military Division of the Missouri.

District of North Missouri

(Transferred to Military Division of West Mississippi (Trans-Mississippi Military Division), May 27 1864-January 30 1865, transferred to Military Division of the Missouri)

  • Clinton Bowen Fisk (May 27 1864-January 30 1865)

May 27 1864: The District of North Missouri transferred with the Department of the Missouri to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Clinton Bowen Fisk retained command of the District of North Missouri.

January 30 1865: The District of North Missouri transferred with the Department of the Missouri to the Military Division of the Missouri.


District of Key West and Tortugas

Union High Command February 10 1865 Gulf Coast Theatre

  • Military Division of West Mississippi: Edward Richard Sprigg Canby
    • Department of Arkansas: Joseph Jones Reynolds
      • District of Eastern Arkansas: Napoleon Bonaparte Buford
      • Army of Arkansas: Joseph Jones Reynolds
        • VII Corps Arkansas: Joseph Jones Reynolds
    • Department of the Gulf: Stephen Augustus Hurlbut
      • Northern District of Louisiana: Francis Jay Herron
      • District of Baton Rouge and Port Hudson: George Leonard Andrews
        • Sub-District of Baton Rouge: Joseph Bailey
        • Sub-District of Port Hudson: Charles Wilson Drew
      • District of La Fourche: Robert Alexander Cameron
      • District of Morganza: Daniel Ullmann
      • District of Carrollton: Nelson Viall
      • District of West Florida and South Alabama: Gordon Granger
        • Sub-District of West Florida: Thomas Jefferson McKean
      • Army of the Gulf: Stephen Augustus Hurlbut temporary
    • District of Key West and Tortugas: John Newton

(Transferred from Department of the Gulf, February 10 1865-May 17 1865, discontinued)

  • John Newton (February 10 1865-May 17 1865)

February 10 1865: The District of Key West and Tortugas transferred from the Department of the Gulf and transferred directly to the Military Division of West Mississippi (Trans-Mississippi Military Division). Major-General John Newton retained command of the District of Key West and Tortugas.

May 17 1865: The District of Key West and Tortugas was discontinued, and its territory assigned to the Department of the Gulf.


District of West Florida and South Alabama

(Transferred from Department of the Gulf, March 1 1865-March 17 1865, discontinued, to District of West Florida and District of South Alabama)

  • Gordon Granger (March 1 1865-March 17 1865)

March 1 1865: The District of West Florida and South Alabama transferred from the Department of the Gulf to the direct control of the Military Division of West Mississippi (Trans-Mississippi Military Division). Major-General Gordon Granger retained command of the District of West Florida and South Alabama. The Sub-District of West Florida transferred with the District of West Florida and South Alabama from the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division).

March 17 1865: The District of West Florida and South Alabama was discontinued. Its territory transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) to the Department of the Gulf as the new District of West Florida and the District of South Alabama. The Sub-District of West Florida was discontinued, and its territory assigned to the District of West Florida.

Sub-District of West Florida

(Transferred from Department of the Gulf, March 1 1865-March 17 1865, discontinued, to District of West Florida)

  • Alexander Asboth (March 1 1865-March 17 1865)

March 1 1865: The Sub-District of West Florida transferred with the District of West Florida and South Alabama from the Department of the Gulf to the Military Division of West Mississippi (Trans-Mississippi Military Division). Brigadier-General Alexander Asboth retained command of the Sub-District of West Florida.

March 17 1865: The Sub-District of West Florida was discontinued, and its territory assigned to the District of West Florida.

Army of West Mississippi

(Established, February 18 1865-June 3 1865, discontinued)

  • Edward Richard Sprigg Canby (February 18 1865-June 3 1865)

February 18 1865: The Army of West Mississippi was established in the Military Division of West Mississippi (Trans-Mississippi Military Division). Major-General Edward Richard Sprigg Canby assumed command of the Army of West Mississippi. The Army of the Gulf transferred to the Army of West Mississippi. XIII Corps (Gulf) was established in the Army of the Gulf, composed largely of troops previously in Reserve Corps (Gulf). The Detachment Army of the Tennessee was discontinued, and reverted to the name XVI Corps (Gulf), and transferred to the Army of the Gulf. XVI Corps (Gulf) was established in the Army of the Gulf.

May 17 1865: The Military Division of West Mississippi (Trans-Mississippi Military Division) (also referred to as the Trans-Mississippi Division) was officially discontinued to be replaced by the Military Division of the Southwest. However, it remained in interim existence until finally disbanded officially on 1st June 1865. The Military Division of West Mississippi (Trans-Mississippi Military Division) retained interim responsibility for the Army of West Mississippi and the Army of the Gulf.

June 3 1865: The Army of West Mississippi was discontinued. The Army of the Gulf transferred from the Army of West Mississippi to the Department of the Gulf. XIII Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf.  XVI Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf.

Army of the Gulf

(Transferred from Department of the Gulf, February 18 1865-June 3 1865, transferred to Department of the Gulf)

  • Stephen Augustus Hurlbut (February 18 1865-April 21 1865)
  • Nathaniel Prentiss Banks (April 22 1865)

February 18 1865: The Army of the Gulf transferred to the Army of West Mississippi. Major-General Stephen Augustus Hurlbut retained command of the Army of the Gulf. XIII Corps (Gulf) was established in the Army of the Gulf, composed largely of troops previously in Reserve Corps (Gulf). The Detachment Army of the Tennessee was discontinued, and reverted to the name XVI Corps (Gulf), and transferred to the Army of the Gulf. XVI Corps (Gulf) was established in the Army of the Gulf.

April 22 1865: Major-General Nathaniel Prentiss Banks assumed command of the Army of the Gulf, succeeding Major-General Stephen Augustus Hurlbut.

May 17 1865: The Military Division of West Mississippi (Trans-Mississippi Military Division) (also referred to as the Trans-Mississippi Division) was officially discontinued to be replaced by the Military Division of the Southwest. However, it remained in interim existence until finally disbanded officially on 1st June 1865. The Military Division of West Mississippi (Trans-Mississippi Military Division) retained interim responsibility for the Army of West Mississippi and the Army of the Gulf.

June 3 1865: The Army of the Gulf transferred from the Army of West Mississippi to the Department of the Gulf. XIII Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf.  XVI Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf.

XIII Corps Gulf

(Established, from Reserve Corps (Gulf), February 18 1865-June 3 1865, transferred to Department of the Gulf)

  • Gordon Granger (February 18 1865-June 3 1865)

February 18 1865: XIII Corps (Gulf) was established in the Army of the Gulf, composed largely of troops previously in Reserve Corps (Gulf). Major-General Gordon Granger assumed command of XIII Corps (Gulf).

June 3 1865: XIII Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf.

XVI Corps Gulf

(Established, from Detachment Army of the Tennessee, February 18 1865-June 3 1865, transferred to Department of the Gulf)

  • Andrew Jackson Smith (February 18 1865-June 3 1865)

February 18 1865: The Detachment Army of the Tennessee was discontinued, and reverted to the name XVI Corps (Gulf), and transferred to the Army of the Gulf. XVI Corps (Gulf) was established in the Army of the Gulf. Major-General Andrew Jackson Smith retained command of XVI Corps (Gulf).

June 3 1865: XVI Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf.


Department of the Gulf

Union High Command May 17 1865 Gulf Coast Theatre

  • Military Division of West Mississippi: Edward Richard Sprigg Canby interim
    • Army of West Mississippi: Edward Richard Sprigg Canby
      • Army of the Gulf: Nathaniel Prentiss Banks
        • XIII Corps Gulf: Gordon Granger
          • XVI Corps Gulf: Andrew Jackson Smith
  • Department of the Gulf: Nathaniel Prentiss Banks interim Edward Richard Sprigg Canby awaited
    • Northern District of Louisiana: Francis Jay Herron
    • District of Morganza: William Henry Dickey
    • District of Baton Rouge: Michael Kelly Lawler
    • District of Port Hudson: Cyrus Hamlin
    • Southern District of Louisiana: Thomas West Sherman
      • District of Carrollton: William S Mudgett
      • District of La Fourche: Robert Alexander Cameron
    • District of Bonnet Carré: James J Byrne
    • District of West Florida: Alexander Asboth
    • District of Alabama: Andrew Jackson Smith
    • District of Mississippi: Peter Joseph Osterhaus

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 27 1865, discontinued, to Department of Louisiana, Department of Mississippi, Department of Florida, Department of Alabama, and Department of Texas)

  • Nathaniel, Prentiss Banks (May 17 1865 interim to June 2 1865)#
  • Edward Richard Sprigg Canby (June 3 1865-June 27 1865)

May 17 1865: The Military Division of West Mississippi (Trans-Mississippi Military Division) (also referred to as the Trans-Mississippi Division) was officially discontinued to be replaced by the Military Division of the Southwest. However, it remained in interim existence until finally disbanded officially on 1st June 1865. The Military Division of West Mississippi (Trans-Mississippi Military Division) retained interim responsibility for the Army of West Mississippi and the Army of the Gulf. The Department of the Gulf became temporarily autonomous pending transfer to the Military Division of the Southwest. The parts of Florida in the Department of the South were transferred to the Department of the Gulf. The parts of Mississippi and Alabama previously occupied by the Army of the Cumberland and temporarily controlled by the Department of the Cumberland were transferred to the Department of the Gulf. The Department of the Gulf was separated from the authority of the discontinued Military Division of West Mississippi (Trans-Mississippi Military Division) and became temporarily autonomous. It took responsibility for Mississippi, Alabama and Florida. Major-General Nathaniel Prentiss Banks retained interim command of the Department of the Gulf, pending the arrival of Major-General Edward Richard Sprigg Canby. Major-General Edward Richard Sprigg Canby was appointed to command the Department of the Gulf, arriving on 3rd June 1865 to succeed Major-General Nathaniel Prentiss Banks. The District of Alabama was established and transferred to the Department of the Gulf. The District of Mississippi was established in the Department of Gulf, comprising the state of Mississippi transferred from the Department of the Mississippi. The Northern District of Louisiana transferred with the Department of the Gulf. The District of Morganza transferred with the Department of the Gulf. The District of Baton Rouge transferred with the Department of the Gulf. The District of Port Hudson transferred with the Department of the Gulf. The Southern District of Louisiana transferred with the Department of the Gulf. The District of Carrollton transferred with the Department of the Gulf. The District of La Fourche transferred with the Department of the Gulf. The District of West Florida transferred with the Department of the Gulf. The District of Bonnet Carré transferred with the Department of the Gulf.

May 29 1865: The District of East Louisiana was established in the Department of the Gulf.

June 3 1865: Major-General Edward Richard Sprigg Canby arrived to command the Department of the Gulf, succeeding Major-General Nathaniel Prentiss Banks. The Army of the Gulf transferred from the Army of West Mississippi to the Department of the Gulf. XIII Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf. XVI Corps (Gulf) transferred with the Army of the Gulf from the discontinued Army of West Mississippi to the Department of the Gulf.

June 3 1865: The District of Florida transferred from the Department of the South to the Department of the Gulf. It comprised the state of Florida. The District of West Florida was discontinued, and its territory incorporated in the District of Florida. The Sub-District of Mobile was established in the District of Alabama.

June 5 1865: The District of Vicksburg transferred from the Department of the Mississippi to the Department of the Gulf.

June 22 1865: The District of Vicksburg was discontinued.

June 24 1865: The District of Port Hudson was discontinued.

June 27 1865: The Department of the Gulf was discontinued, and its territory incorporated into the Department of Louisiana, the Department of Mississippi, the Department of Alabama, the Department of Florida and the Department of Texas. The Army of the Gulf was discontinued. XIII Corps (Gulf) transferred from the discontinued Army of the Gulf to the Military Division of the Gulf. XVI Corps (Gulf) transferred from the discontinued Army of the Gulf to the Military Division of the Gulf. The District of Florida was discontinued, and its territory transferred to the Department of Florida. The District of Bonnet Carré was discontinued. The District of Carrollton was discontinued. The District of La Fourche was discontinued. The District of Morganza was discontinued. The Northern District of Louisiana was discontinued. The Southern District of Louisiana was discontinued. The District of Baton Rouge transferred from the Department of the Gulf to the Department of Louisiana. The District of East Louisiana was discontinued. The Western District of Louisiana was established in the Department of Louisiana. The Department of Mississippi was established and transferred to the Military Division of the Gulf. The state of Mississippi transferred from the Department of the Gulf to the Department of Mississippi. The District of Mississippi was discontinued. The District of Alabama was discontinued. The Sub-District of Mobile was discontinued, and incorporated into the Department of Alabama.

Northern District of Louisiana

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 27 1865, discontinued, to Department of Louisiana)

  • Francis Jay Herron (May 17 1865-June 27 1865)

May 17 1865: The Northern District of Louisiana transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Department of the Gulf. The District of Morganza transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Northern District of Louisiana. The District of Baton Rouge transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Northern District of Louisiana. The District of Port Hudson transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Northern District of Louisiana. Major-General Francis Jay Herron retained command of the Northern District of Louisiana.

June 7 1865: Command of the Northern District of Louisiana became vacant.

June 27 1865: The Northern District of Louisiana was discontinued. The District of Morganza was discontinued. The District of Baton Rouge transferred from the Department of the Gulf to the Department of Louisiana.

District of Morganza

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 27 1865, discontinued)

  • William Henry Dickey (May 17 1865-June 27 1865)

May 17 1865: The District of Morganza transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Northern District of Louisiana. Colonel William Henry Dickey retained command of the District of Morganza.

June 27 1865: The District of Morganza was discontinued.

District of Baton Rouge

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 27 1865, transferred to Department of Louisiana)

  • Michael Kelly Lawler (May 17 1865-May 29 1865)
  • John Giles Fonda (May 30 1865-June 27 1865)

May 17 1865: The District of Baton Rouge transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Northern District of Louisiana. Brigadier-General Michael Kelly Lawler retained command of the District of Baton Rouge.

May 30 1865: Colonel John Giles Fonda assumed command of the District of Baton Rouge, succeeding Brigadier-General Michael Kelly Lawler.

June 27 1865: The District of Baton Rouge transferred from the Department of the Gulf to the Department of Louisiana.

District of Port Hudson

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 24 1865, discontinued)

  • Cyrus Hamlin (May 17 1865-June 24 1865)

May 17 1865: The District of Port Hudson transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Northern District of Louisiana. Brigadier-General Cyrus Hamlin retained command of the District of Port Hudson.

June 24 1865: The District of Port Hudson was discontinued.

Southern District of Louisiana

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 27 1865, discontinued)

  • Thomas West Sherman (May 17 1865-June 27 1865)

May 17 1865: The Southern District of Louisiana transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Department of the Gulf. The District of Carrollton transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Southern District of Louisiana. The District of La Fourche transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Southern District of Louisiana. Brigadier-General Thomas West Sherman retained command of the Southern District of Louisiana.

June 27 1865: The Southern District of Louisiana was discontinued. The District of Carrollton was discontinued. The District of La Fourche was discontinued.

District of Carrollton

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 27 1865, discontinued)

  • William S Mudgett (May 17 1865-June 27 1865)

May 17 1865: The District of Carrollton transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Southern District of Louisiana. Colonel William S Mudgett retained command of the District of Carrollton.

June 27 1865: The District of Carrollton was discontinued.

District of La Fourche

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 27 1865, discontinued)

  • Robert Alexander Cameron (May 17 1865-June 27 1865)

May 17 1865: The District of La Fourche transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Southern District of Louisiana. Brigadier-General Robert Alexander Cameron retained command of the District of La Fourche.

June 22 1865: Command of the District of La Fourche became vacant with the resignation of Brigadier-General Robert Alexander Cameron.

June 27 1865: The District of La Fourche was discontinued.

District of West Florida

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 3 1865, discontinued, to District of Florida)

  • Alexander Asboth (May 17 1865-June 3 1865)

May 17 1865: The District of West Florida transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Department of the Gulf. Brigadier-General Alexander Asboth retained command of the District of West Florida.

June 3 1865: The District of West Florida was discontinued, and its territory incorporated in the District of Florida.

District of Bonnet Carré

(Transferred from Military Division of West Mississippi (Trans-Mississippi Military Division), May 17 1865-June 27 1865, discontinued)

  • James J Byrne (May 17 1865-June 27 1865)

May 17 1865: The District of Bonnet Carré transferred from the Military Division of West Mississippi (Trans-Mississippi Military Division) with the Department of the Gulf. Colonel James J Byrne retained command of the District of Bonnet Carré.

June 27 1865: The District of Bonnet Carré was discontinued.

District of Alabama

(Established, from District of South Alabama, May 17 1865-June 27 1865, discontinued, to Department of Alabama)

  • Andrew Jackson Smith (May 17 1865-June 27 1865)

May 17 1865: The District of South Alabama was discontinued, and its territory incorporated into the District of Alabama. The District of Alabama was established in the Department of the Gulf, and comprised the state of Alabama. Major-General Andrew Jackson Smith assumed command of the District of Alabama.

June 3 1865: The Sub-District of Mobile was established in the District of Alabama. It comprised the territory round Mobile, Alabama.

June 27 1865: The District of Alabama was discontinued. The Department of Alabama was established, comprising the state of Alabama. It transferred to the Military Division of the Tennessee. The Sub-District of Mobile was discontinued, and incorporated into the Department of Alabama.

Sub-District of Mobile

(Established, June 3 1865-June 27 1865, discontinued, to Department of Alabama)

  • Christopher Columbus Andrews (June 3 1865-June 11 1865)
  • Thomas Kilby Smith (June 12 1865-June 27 1865)

June 3 1865: The Sub-District of Mobile was established in the District of Alabama. It comprised the territory round Mobile, Alabama. Brigadier-General Christopher Columbus Andrews assumed command of the Sub-District of Mobile.

June 12 1865: Brigadier-General Thomas Kilby Smith assumed command of the Sub-District of Mobile, succeeding Brigadier-General Christopher Columbus Andrews.

June 27 1865: The Sub-District of Mobile was discontinued, and incorporated into the Department of Alabama.

District of Mississippi

(Established, May 17 1865-June 27 1865, discontinued, to Department of Mississippi)

  • Peter Joseph Osterhaus (May 17 1865-June 27 1865)

May 17 1865: The District of Mississippi was established in the Department of Gulf, comprising the state of Mississippi transferred from the Department of the Mississippi. Major-General Peter Joseph Osterhaus assumed command of the District of Mississippi.

June 27 1865: The Department of Mississippi was established and transferred to the Military Division of the Gulf. The state of Mississippi transferred from the Department of the Gulf to the Department of Mississippi. The District of Mississippi was discontinued, and its territory transferred to the Department of Mississippi in the Military Division of the Gulf.

District of East Louisiana

(Established, May 29 1865-June 27 1865, discontinued, to Eastern District of Louisiana)

  • Michael Kelly Lawler (May 29 1865-June 27 1865)

May 29 1865: The District of East Louisiana was established in the Department of the Gulf. Brigadier-General Michael Kelly Lawler assumed command of the District of East Louisiana.

June 27 1865: The District of East Louisiana was discontinued.

District of Florida

(Transferred from Department of the South, June 3 1865-June 27 1865, discontinued, to Department of Florida)

  • Alexander Asboth (June 3 1865-June 27 1865)

June 3 1865: The District of West Florida was discontinued, and its territory incorporated in the District of Florida. The District of Florida transferred from the Department of the South to the Department of the Gulf. It comprised the state of Florida. Brigadier-General Alexander Asboth assumed command of the District of Florida, succeeding Brigadier-General Israel Vogdes.

June 27 1865: The District of Florida was discontinued, and its territory transferred to the Department of Florida.

District of Vicksburg

(Transferred from Department of the Mississippi, June 5 1865-June 22 1865, discontinued)

  • Morgan Lewis Smith (June 5 1865-June 22 1865)

June 5 1865: The District of Vicksburg transferred from the Department of the Mississippi to the Department of the Gulf. Major-General Morgan Lewis Smith retained command of the District of Vicksburg.

June 22 1865: The District of Vicksburg was discontinued.

Army of the Gulf

(Transferred from Army of West Mississippi, June 3 1865-June 27 1865, discontinued)

  • Edward Richard Sprigg Canby (June 3 1865-June 27 1865)

June 3 1865: The Army of the Gulf transferred from the Army of West Mississippi to the Department of the Gulf. XIII Corps (Gulf) transferred with the Army of the Gulf to the Department of the Gulf. XVI Corps (Gulf) transferred with the Army of the Gulf to the Department of the Gulf. Major-General Edward Richard Sprigg Canby assumed command of the Army of the Gulf, succeeding Major-General Benjamin Franklin Butler.

June 27 1865: The Army of the Gulf was discontinued. XIII Corps (Gulf) transferred from the Army of the Gulf to the Military Division of the Gulf. XVI Corps (Gulf) transferred from the Army of the Gulf to the Military Division of the Gulf.

XIII Corps Gulf

(Transferred from Army of West Mississippi, June 3 1865-June 27 1865, transferred to Military Division of the Gulf)

  • Gordon Granger (June 3 1865-June 27 1865)

June 3 1865: XIII Corps (Gulf) transferred with the Army of the Gulf from the Army of West Mississippi to the Department of the Gulf. Major-General Gordon Granger retained command of XIII Corps (Gulf).

June 27 1865: XIII Corps (Gulf) transferred from the Army of the Gulf to the Military Division of the Gulf.

XVI Corps Gulf

(Transferred from Army of West Mississippi, June 3 1865-June 27 1865, transferred to Military Division of the Gulf)

  • Andrew Jackson Smith (June 3 1865-June 27 1865)

XIVI Corps (Gulf) transferred with the Army of the Gulf from the Army of West Mississippi to the Department of the Gulf. Major-General Andrew Jackson Smith retained command of XVI Corps (Gulf).

June 27 1865: XVI Corps (Gulf) transferred from the Army of the Gulf to the Military Division of the Gulf.



Military Division of the Southwest

Union High Command May 17 1865 Gulf Coast Theatre

  • Military Division of West Mississippi: Edward Richard Sprigg Canby interim
    • Army of West Mississippi: Edward Richard Sprigg Canby
      • Army of the Gulf: Nathaniel Prentiss Banks
        • XIII Corps Gulf: Gordon Granger
          • XVI Corps Gulf: Andrew Jackson Smith
  • Department of the Gulf: Nathaniel Prentiss Banks interim Edward Richard Sprigg Canby awaited
    • Northern District of Louisiana: Francis Jay Herron
    • District of Morganza: William Henry Dickey
    • District of Baton Rouge: Michael Kelly Lawler
    • District of Port Hudson: Cyrus Hamlin
    • Southern District of Louisiana: Thomas West Sherman
      • District of Carrollton: William S Mudgett
      • District of La Fourche: Robert Alexander Cameron
    • District of Bonnet Carré: James J Byrne
    • District of West Florida: Alexander Asboth
    • District of Alabama: Andrew Jackson Smith
    • District of Mississippi: Peter Joseph Osterhaus

(Established, May 17 1865-June 27 1865, discontinued)

  • Philip Henry Sheridan (May 17 1865-June 27 18)65

May 17 1865: The Military Division of the Southwest was established to comprise parts of the Department of Arkansas and the former Department of the Gulf. The states of Louisiana and Texas were detached from the Department of the Gulf and assigned to the Military Division of the Southwest. The Department of Arkansas transferred from the Military Division of the Missouri to the Military Division of the Southwest. Major-General Philip Henry Sheridan was appointed to command the Military Division of the Southwest, arriving on 29th May 1865.

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

May 29 1865: Major-General Philip Henry Sheridan arrived to command the Military Division of the Southwest.

June 3 1865: The District of South Kansas was discontinued.

June 4 1865: XXV Corps (Southwest) was discontinued.

June 5 1865: The District of Eastern Arkansas was discontinued.

June 27 1865: The Military Division of the Southwest was discontinued. The Department of Arkansas transferred from the Military Division of the Southwest to the Military Division of the Mississippi. The Army of Arkansas transferred with the Department of Arkansas to the Military Division of the Mississippi.


Department of Arkansas

Union High Command May 17 1865 Gulf Coast Theatre

  • Military Division of West Mississippi: Edward Richard Sprigg Canby interim
    • Army of West Mississippi: Edward Richard Sprigg Canby
      • Army of the Gulf: Nathaniel Prentiss Banks
        • XIII Corps Gulf: Gordon Granger
          • XVI Corps Gulf: Andrew Jackson Smith
  • Department of the Gulf: Nathaniel Prentiss Banks interim Edward Richard Sprigg Canby awaited
    • Northern District of Louisiana: Francis Jay Herron
    • District of Morganza: William Henry Dickey
    • District of Baton Rouge: Michael Kelly Lawler
    • District of Port Hudson: Cyrus Hamlin
    • Southern District of Louisiana: Thomas West Sherman
      • District of Carrollton: William S Mudgett
      • District of La Fourche: Robert Alexander Cameron
    • District of Bonnet Carré: James J Byrne
    • District of West Florida: Alexander Asboth
    • District of Alabama: Andrew Jackson Smith
    • District of Mississippi: Peter Joseph Osterhaus

(Transferred from Military Division of the Missouri, May 17 1865-June 27 1865, transferred to Military Division of the Mississippi)

  • Joseph Jones Reynolds (May 17 1865-June 27 1865)

May 17 1865: The Department of Arkansas transferred from the Military Division of the Missouri to the Military Division of the Southwest. Major-General Joseph Jones Reynolds retained command of the Department of Arkansas. The District of South Kansas transferred with the Department of Arkansas to the Military Division of the Southwest. The District of Eastern Arkansas transferred with the Department of Arkansas to the Military Division of the Southwest. The Army of Arkansas transferred with the Department of Arkansas to the Military Division of the Southwest. VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Southwest.

June 3 1865: The District of South Kansas was discontinued.

June 5 1865: The District of Eastern Arkansas was discontinued.

June 27 1865: The Department of Arkansas transferred from the Military Division of the Southwest to the Military Division of the Mississippi. The Army of Arkansas transferred with the Department of Arkansas to the Military Division of the Mississippi. VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Mississippi.

District of South Kansas

(Transferred from Military Division of the Missouri, May 17 1865-June 3 1865, discontinued)

  • James Gilpatrick Blunt (May 17 1865-June 3 1865)

May 17 1865: The District of South Kansas transferred with the Department of Arkansas to the Military Division of the Southwest. Major-General James Gilpatrick Blunt retained command of the District of South Kansas.

June 3 1865: The District of South Kansas was discontinued.

District of Eastern Arkansas

(Transferred from Military Division of the Missouri, May 17 1865-June 5 1865)

  • John Milton Thayer (May 17 1865-June 5 1865)

May 17 1865: The District of Eastern Arkansas transferred with the Department of Arkansas to the Military Division of the Southwest. Brigadier-General John Milton Thayer assumed command of the District of Eastern Arkansas.

June 5 1865: The District of Eastern Arkansas was discontinued.

Army of Arkansas

(Transferred from Military Division of the Missouri, May 17 1865-June 27 1865, transferred to Military Division of the Mississippi)

  • Joseph Jones Reynolds (May 17 1865-June 27 1865)

May 17 1865: The Army of Arkansas transferred with the Department of Arkansas to the Military Division of the Southwest. Major-General Joseph Jones Reynolds retained command of the Army of Arkansas. VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Southwest.

June 27 1865: The Army of Arkansas transferred with the Department of Arkansas to the Military Division of the Mississippi. VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Mississippi.

VII Corps Arkansas

(Transferred from Military Division of the Missouri, May 17 1865-June 27 1865, transferred to Military Division of the Mississippi)

  • Joseph Jones Reynolds (May 17 1865-June 27 1865)

May 17 1865: VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Southwest. Major-General Joseph Jones Reynolds retained command of VII Corps (Arkansas).

June 27 1865: VII Corps (Arkansas) transferred with the Army of Arkansas to the Military Division of the Mississippi.

XXV Corps Southwest)

(Transferred from Army of the James, May 23 1865-June 4 1865, discontinued)

  • Godfrey Weitzel (May 23 1865-June 4 1865)

May 23 1865: XXV Corps transferred from the Army of the James to the Military Division of the Southwest. Major-General Godfrey Weitzel retained command of XXV Corps (Southwest).

June 4 1865: XXV Corps (Southwest) was discontinued.

Union High Command June 27 1865 Gulf Coast Theatre

  • Military Division of the Gulf: Philip Henry Sheridan
    • Department of Texas: Horatio Gouverneur Wright awaited
      • Central District of Texas: David Sloane Stanley
      • Eastern District of Texas: Joseph Anthony Mower
      • Western District of Texas: Frederick Steele
    • Department of Louisiana: Edward Richard Sprigg Canby awaited
      • District of Baton Rouge: John Giles Fonda
      • Eastern District of Louisiana: Thomas West Sherman
      • Western District of Louisiana: John Parker Hawkins
    • Department of Mississippi: Henry Warner Slocum awaited
      • Northern District of Mississippi: Peter Joseph Osterhaus
      • Southern District of Mississippi: John Wynn Davidson
      • Western District of Mississippi: Jasper Adalmorn Maltby
    • Department of Florida: John Newton interim John Gray Foster awaited
    • XIII Corps Gulf: Gordon Granger
    • XVI Corps Gulf: Andrew Jackson Smith

 

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