The Civil War in the East

U.S. Army

22nd Army Corps, Department of Washington

Major General Samuel Peter Heintzelman


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

Col. J. N. G. Whistler (until 9/16)

Colonel T. R. Tannatt


Second Brigade

Col. L. W. Wessells (until 9/20)

Col. L. Schirmer


Third Brigade

Colonel H. L. Abbot


Fourth Brigade

Lt. Colonel T. Allcock (to 9/2)

Colonel J.C. Tidball


King's Division

Bde. Gen. Rufus King

established 7/15

First Brigade

Bde. Gen. Michael Corcoran


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. G. Sickel

Colonel H. C. Bollinger


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

Bde. Gen. J. H. Martindale (to 9/16)

Major J. P. Sherborne (9/16)

Colonel M. N. Wisewell


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.)



Light Artillery Camp Camp Berry

Bde. Gen. A. P. Howe


7th Massachusetts Battery



1st Michigan Artillery, Battery K


to Army Potomac, 11th Corps Artillery

1st New York Artillery, Battery F



1st New York Artillery, Battery H



4th New York Independent Battery


to Army Potomac Artillery Res., 1st Vol. Bde.

10th New York Independent Battery



19th New York Independent Battery



12th Ohio Independent Battery


to Army Potomac, 11th Corps Artillery

1st Pennsylvania Artillery, Battery H



1st West Virginia Artillery, Battery F



5th United States Artillery, Battery I



5th United States Artillery, Battery L



About the Author • ©2015 Steve Hawks