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

from 3rd Bde. (see below)

Maryland Artillery, Battery D

from 3rd Bde. (see below)

Massachusetts Heavy Artillery,
Companies. 3, 15 & 16

to Defences North of the Potomac, 2nd Bde.
3rd Massachusetts Heavy Artillery Regiment

Massachusetts Heavy Artillery,
Companies 17, 19-21, 24, 26-27 & 29-30

to 3rd Bde, 4th Massachusetts Heavy Artillery Regiment (see below)

1st New York Artillery, Battery F

from 4th Bde. (see below)

1st New York Artillery, Battery K

1st Pennsylvania Artillery, Battery H

6th Pennsylvania Heavy Artillery,
Companies E & H

from 2nd Bde. (see below)

Pennsylvania Independent Battery I

from 3rd Bde. (see below)

1st United States Artillery, Batteries A&F

from Camp Berry

1st United States Artillery, Battery E

2nd United States Artillery, Battery G

1st West Virginia Artillery, Battery C

from 4th Bde. (see below)

Second Brigade

Colonel Charles Barnes

Massachusetts Heavy Artillery,
18th, 22nd, 23rd, 25th & 28th Cos.

to Defences South Potomac, 3rd Bde.,
3rd Massachusetts Heavy Artillery

Massachusetts Heavy Artillery, 14th Co.

to 2nd Bde. (see below)

6th Pennsylvania Heavy Artillery

6th Pennsylvania Heavy Artillery,
Companies C & M

to 3rd Bde. (see above)

6th Pennsylvania Heavy Artillery,
Companies E & H

to 1st Bde. (see above)

Third Brigade

Lt. Colonel James Brady (to 12/16)

Colonel W.S. King

16th Indiana Battery

to 1st Bde. (see above)

Maryland Artillery, Battery D

to 1st Bde. (see above)

4th Massachusetts Heavy Artillery Regt.

Colonel W.S. King

from unattached Mass. Heavy Artillery Cos.

1st New Hampshire Heavy Artillery

Lt. Colonel I. McL. Barron

to Defences North Potomac, 1st Bde.

1st New York Artillery, Battery F

to 1st Bde. (see below)

4th New York Heavy Artillery

Colonel J.C. Tidball

2nd Pennsylvania Heavy Artillery (det)

to Defences Bermuda Hundred

6th Pennsylvania Heavy Artillery,
Companies C & M

from 2nd Bde. (see above)

Pennsylvania Independent Battery I

to 1st Bde. (see above)

1st West Virginia Artillery, Battery C

to 1st Bde. (see above)

1st Wisconsin Heavy Artillery, Bat. F

to 4th Bde. (see below)

Fourth Brigade

Colonel C.C. Meservey

10th New York Heavy Artillery

to Army James Prov. Div.

1st Wisconsin Heavy Artillery, Bat. A

Colonel C.C. Meservey

1st Wisconsin Heavy Artillery, Bat. F

from 3rd Bde. (see above)