U.S. Army - 22nd Army Corps - Department of Washington

Defences North of the Potomac

Lt. Colonel J. A. Haskins

First Brigade

Colonel A. A. Gibson

2nd Pennsylvania Heavy Atillery

1st Vermont Heavy Artillery

Second Brigade

Colonel L. O. Morris

1st Maine Heavy Artillery

7th New York Heavy Artillery

9th New York Heavy Artillery

9th New York Independent Battery

Third Brigade

Colonel A. Piper

10th New York Heavy Artillery