The United States Army in the Eastern Theater
< to April • May 1862 • to June >
After April 4, 1862 there was no commander in chief of the army.
Army of the Potomac
Major General George B. McClellan
Department of Virginia
Major General John E. Wool
Middle Department
Major General John Dix
Mountain Department
Major General John C. Fremont
Dept. of the Rappahannock
Major General Irvin McDowell
Dept. of the Shenandoah
Major General Nathaniel Banks
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