August 1-24
Department of the East
Major General John E. Wool
Abolished 8/17
Dept. of Pennsylvania 
Major General John A. Dix
Merged into Dept. of the Potomac 8/24
Dept. of the Shenandoah
Major General Nathaniel P. Banks
Merged into Dept. of the Potomac 8/17
Dept. of Virginia 
Bde. Gen. Benjamin F. Butler(to 8/17)
Major General John E. Wool (after 8/17)
An area 60 miles around Fortress Monroe
Division of the Potomac
Major General George McClellan
Dept. of Washington 
Brigadier General Joseph K. F. Mansfield
Merged into the Dept. of the Potomac 8/17
Dept. of N.E. Virginia 
Brigadier General Irvin McDowell
Merged into the Dept. of the Potomac 8/17
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