The Civil War in the East

United States Armies & Departments

Department of Washington
February 1863 - August 1865


Major General
Samuel Heintzelman
Feb.-Oct. 1863

Major General
Christopher Augur
Oct. 63 - Aug. 66

The Department of Washington was reestablished on February 2, 1863, split away from the Department of the Potomac when Joseph Hooker took over that department from Ambrose Burnside.

 

The Department was to consist of the area north of the Potomac River in Maryland from Piscataway Creek to Annapolis Junction, to the mouth of the Monocacy River, and south by Goose Creek and the Bull Run mountains to the mouth of the Occoquan River.

 

On June 21, 1864 it was redefined as that part of Maryland south of a line drawn from the mouth of the Monocacy River to Annapolis Junction, and west of the Patuxent River, the District of Columbia, and the area by Goose Creek and the Bull Run mountains to the mouth of the Occoquan River.

 

On August 7, 1864 the department was attached to the Middle Military Division.

Month-to-month Organization of the Department of Washington 1863-1865




 
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