Army of the Potomac
Major General George McClellan
Operating in the Department of Virginia, but separate from General Wool's command.
Dept. of Virginia
Major General John E. Wool
An area 60 miles around Fortress Monroe
Major General John Dix
New Jersey, Pennsylvania, Delaware, the eastern part of Maryland and the Eastern Shore of Virginia.
Dept. of the Rappahannock
Major General Irvin McDowell
Virginia east of the Blue Ridge and west of the Potomac River, the Fredericksburg and Richmond Railroad, including the District of Columbia and the country between the Potomac and the Patuxent Rivers.
Dept. of the Shenandoah
Major General Nathaniel Banks
The Valley of Virginia and
Allegheny & Washington Counties in Maryland.