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

Defences South of the Potomac

Brigadier General G. A. DeRussy

First Brigade

Colonel J.N.G. Whistler

16th Indiana Battery

mustered out

Maryland Artillery, Battery D

mustered out

1st New York Artillery, Battery F

mustered out

1st New York Artillery, Battery K

mustered out

1st Pennsylvania Artillery, Battery H

mustered out

6th Pennsylvania Heavy Artillery,
Companies E&H

mustered out

Pennsylvania Independent Battery I

mustered out

1st United States Artillery, Batteries A&F

mustered out

1st United States Artillery, Battery E

2nd United States Artillery, Battery G

1st West Virginia Artillery, Battery C

mustered out

Second Brigade

Colonel Charles Barnes (to 6/26)

Colonel J. Hubbard

2nd Connecticut Heavy Artillery

Colonel J. Hubbard

6th Pennsylvania Heavy Artillery

Colonel Charles Barnes

mustered out 6/26

Third Brigade

Lt. Colonel S.C. Hart (to 6/15)

Major H.T. Lee (6/15 - 6/30)

Colonel J.C. Tidball (after 6/30)

4th Massachusetts Heavy Artillery Regt.

Colonel W.S. King

mustered out

4th New York Heavy Artillery

Colonel J.C. Tidball

6th Pennsylvania Heavy Artillery,
Companies C & M

muetered out

Fourth Brigade

Colonel C.C. Meservey (to 6/28)

Major J. Dieckmann

15th New York Heavy Artillery

Major J. Dieckmann

1st Wisconsin Heavy Artillery

Colonel C.C. Meservey

mustered out 6/26