United States Armies and Departments
in the Eastern Theater of the Civil War
December 1862

Army of the Potomac

Maj. Gen. Ambrose Burnside

Dept. of Virginia

Major General John Dix

An area 60 miles around Fortress Monroe

Middle Department

Maj. Gen. John E. Wool (to 12/22)

Maj. Gen. Robert Schenck (after 12/22)

New Jersey, Pennsylvania, Delaware, the eastern part of Maryland and the Eastern Shore of Virginia.

Washington D.C. Defenses

Major General Samuel P. Heintzelman

District of Columbia, Arlington County in Virginia, and adjacent fortifications