June 12 1861 Wednesday
Chesapeake Bay Blockade
McClellan’s West Virginia Campaign
Lyon’s Operations in Missouri
Missouri. After quickly concluding that Jefferson City could not be held, the pro-Confederate Missouri State Guard under State Major-General Sterling Price and Governor Claiborne Fox Jackson departed for Boonville. Union Brigadier-General Nathaniel Lyon promptly set out after them by steamboat with two volunteer regiments, a company of US Regular Army soldiers, and a battery of artillery, numbering about 1,700 men in all. His goal was to seize the capital and to disperse the secessionist Missouri State Guard. Union Colonel Franz Sigel took command of a second element of Union troops moving from St Louis into southwest Missouri to cut off any Missouri State Guard forces who might retreat south in the face of Lyon’s advance. Sigel started to move with five companies of the 1st and 2nd US Infantry , two rifle companies, and an artillery battery towards Springfield. Meanwhile, Governor Jackson called for 50,000 secessionist volunteers to defend Missouri from the Union army. Thousands of additional men answered the proclamation and enlisted in the respective divisions of the Missouri State Guard.
Virginia. The West Virginia State Convention at Wheeling resolved to elect loyal state officers.
Union Organisation
USA: Montgomery Cunningham Meigs confirmed Brigadier-General USA to date from 10 July 1861; this appointment was subsequently withdrawn administratively as inadvertent because Meigs had already been appointed on 15 May 1861.
Commander in Chief: President Abraham Lincoln
Vice-President: Hannibal Hamlin
Secretary of War: Simon Cameron
Secretary of the Navy: Gideon Welles
Atlantic Blockading Squadron: Silas Horton Stringham
Gulf Blockading Squadron: William Mervine
Pacific Squadron: John Berrien Montgomery
West Indies Squadron: Garrett J Pendergrast
Western Gunboat Flotilla: John Rodgers
Potomac Flotilla: James Harmon Ward
General–in-Chief: Winfield Scott
Department of Annapolis: Nathaniel Prentiss Banks
Department of the East: John Ellis Wool
Department of Florida: Harvey Brown
Department of Kentucky: Robert Anderson
Department of New Mexico: Edward Richard Sprigg Canby
Department of Northeastern Virginia: Irvin McDowell
Department of the Ohio: George Brinton McClellan
Department of the Pacific: Edwin Vose Sumner
- District of Oregon: George Wright
Department of Pennsylvania: Robert Patterson
- Army of the Shenandoah: Robert Patterson
Department of Texas: Vacant
Department of Utah: Philip St George Cooke
Department of Virginia: Benjamin Franklin Butler
Department of Washington: Joseph King Fenno Mansfield
Department of the West: Nathaniel Lyon
Confederate Organisation
Commander in Chief: President Jefferson Finis Davis
Vice-President: Alexander Hamilton Stephens
Secretary of War: Leroy Pope Walker
Secretary of the Navy: Stephen Russell Mallory
Military Adviser to the President: Robert Edward Lee
Department No 1: David Emanuel Twiggs
- “Forces in New Orleans” “Army of Louisiana”: Braxton Bragg
Department of Fredericksburg: Theophilus Hunter Holmes
Department of the Potomac: Pierre Gustave Toutant Beauregard
- Army of the Potomac: Pierre Gustave Toutant Beauregard
Department of Norfolk: Benjamin Huger
Department of North Carolina: Theophilus Hunter Holmes
- Defences of North Carolina: Theophilus Hunter Holmes
Department of the Peninsula: Daniel Harvey Hill temporary
- Army of the Peninsula: Daniel Harvey Hill temporary
Department of South Carolina: Daniel Harvey Hill
Department of Southwestern Virginia: William Wing Loring
Department of Texas: Earl Van Dorn
Department of West Florida: Braxton Bragg
- “Forces in Pensacola”: Braxton Bragg
Defences of Savannah: Alexander Robert Lawton
Indian Territory: Benjamin McCulloch
Forces in Harper’s Ferry”: Joseph Eggleston Johnston
Forces in Richmond: Thomas Turner Fauntleroy
Army of the Kanawha: Henry Alexander Wise
Army of the Northwest: Robert Selden Garnett
Union Generals
Note: Italics, awaiting confirmation of the commission
Major-General USA
Winfield Scott
George Brinton McClellan
John Charles Frémont
Major-General USV
John Adams Dix
Nathaniel Prentiss Banks
Benjamin Franklin Butler
Brigadier-General USA
John Ellis Wool
William Selby Harney
Edwin Vose Sumner
Joseph King Fenno Mansfield
Irvin McDowell
Robert Anderson
William Starke Rosecrans
Brigadier-General USV
Samuel Peter Heintzelman
David Hunter
Erasmus Darwin Keyes
Andrew Porter
Fitz-John Porter
William Buel Franklin
William Tecumseh Sherman
Charles Pomeroy Stone
Don Carlos Buell
Thomas West Sherman
Nathaniel Lyon
John Pope
George Archibald McCall
William Reading Montgomery
Philip Kearny
Joseph Hooker
John Wolcott Phelps
Ulysses Simpson Grant
Joseph Jones Reynolds
Samuel Ryan Curtis
Charles Smith Hamilton
Darius Nash Couch
Rufus King
Jacob Dolson Cox
Stephen Augustus Hurlbut
Franz Sigel
Robert Cumming Schenck
Benjamin Mayberry Prentiss
Frederick West Lander
Benjamin Franklin Kelley
John Alexander McClernand
Alpheus Starkey Williams
Israel Bush Richardson
James Cooper
Brigadier-General USA (Staff)
Montgomery Cunningham Meigs
Confederate Generals
Note: Italics, awaiting confirmation of the commission
General ACSA
Samuel Cooper
Albert Sidney Johnston
Major-General PACS
David Emanuel Twiggs
Brigadier-General ACSA
Robert Edward Lee
Joseph Eggleston Johnston
Pierre Gustave Toutant Beauregard
Braxton Bragg
Brigadier-General PACS
Alexander Robert Lawton
Milledge Lake Bonham
Benjamin McCulloch
William Wing Loring
Charles Clark
John Buchanan Floyd
William Henry Talbot Walker
Henry Rootes Jackson
Theophilus Hunter Holmes
Henry Alexander Wise
Earl Van Dorn
Robert Selden Garnett
American Civil War High Command 