U.S. Army

22nd Army Corps, Department of Washington

Major General Samuel Peter Heintzelman (to 10/13)

Major General C. C. Augur

Defences North of the Potomac

Lt. Colonel J. A. Haskins

First Brigade

Colonel A. A. Gibson

Second Brigade

Colonel L. O. Morris

Third Brigade

Colonel W. R. Pease

Defences South of the Potomac

Bde. Gen. G. A. DeRussy

First Brigade

Colonel T. R. Tannatt

Second Brigade

Col. L. Schirmer

Maj. L. Schamberger

Third Brigade

Colonel H. L. Abbot

Fourth Brigade

Colonel J.C. Tidball

King's Division

Bde. Gen. Rufus King

Bde. Gen. Michael Corcoran

First Brigade

Bde. Gen. Michael Corcoran

Colonel M. Murphy

Independent Cavalry Brigade

Colonel C. R. Lowell, Jr.

2nd Massachusetts Cavalry Regiment

13th New York Cavalry Regiment

16th New York Cavalry Regiment

District of Alexandria

Brig. Gen. John P. Slough

1st District of Columbia Infantry Regt.

Pennsylvania Independent Battery H

Second Brigade, Pa. Reserves

Colonel H. C. Bollinger

Colonel H. G. Sickel

3rd Pennsylvania Reserves Regiment

Colonel Horation G. Sickel (^)

4th Pennsylvania Reserves Regiment

Colonel Richard H. Woolworth

7th Pennsylvania Reserves Regiment

Colonel Henry C. Bolinger

8th Pennsylvania Reserves Regiment

Colonel Silas M. Baily

District of Washington

Colonel M. N. Wisewell (10/1)

Bde. Gen. J. H. Martindale

2nd District of Columbia Infantry Regt.

Colonel Charles M. Alexander

14th New Hampshire Infantry Regiment

Colonel Robert Wilson

153rd New York Infantry Regiment

Colonel Edwin P. Davis

178th New York Infantry Regiment

from Defenses S. Potomac, 3rd Bde.

150th Pennsylvania Infantry, Co. K

157th Pennsylvania Infantry (4 cos.)

1st Veteran Reserve Corps

mustered in

6th Veteran Reserve Corps

mustered in

9th Veteran Reserve Corps

mustered in

Light Artillery Camp Camp Berry

Bde. Gen. A. P. Howe

2nd Connecticut Light Battery

from Department of the East, New York City

1st Delaware Battery

2nd Maine Light Artillery

from Army Potomac, 1st Corps Artillery

7th Massachusetts Battery

3rd New Jersey Battery

from New Jersey

4th New Jersey Battery

from New Jersey

5th New Jersey Battery

from New Jersey

1st New York Artillery, Battery F

1st New York Artillery, Battery H

to Army Potomac, 1st Corps Artillery

10th New York Independent Battery

19th New York Independent Battery

33rd New York Independent Battery

from New York

1st Pennsylvania Artillery, Battery H

1st Rhode Island Artillery, Battery H

from Defences S. of the Potomac, 3rd Bde.

1st West Virginia Artillery, Battery F

5th United States Artillery, Battery I

5th United States Artillery, Battery L