The Civil War in the East

U.S. Army

22nd Army Corps, Department of Washington

Major General Samuel P. Heintzelman



Defences North of the Potomac

Lt. Colonel J. A. Haskins


First Brigade

Colonel A. A. Gibson


Second Brigade

Colonel Lewis O. Morris


Third Brigade

Colonel W. R. Pease


Abercrombie's Division

Brigadier General J. J. Abercrombie


Second Brigade

Brig. Gen. Robert Cowden (to 3/31)

Colonel B. Porter


Third Brigade

Col. William Gurney


Casey's Division

Major General Silas Casey


First Brigade

Col. Francis Fessenden


Second Brigade

Brig. Gen. Edwin H. Stoughton


Third Brigade

Brig. Gen. Alexander Hays


Pennsylvania Reserves Division

Colonel H. G. Sickel


First Brigade

Colonel William McCandless (to 3/29)

Colonel William Sinclair


Second Brigade

Colonel H. C. Bollinger


Third Brigade

Colonel J. W. Fisher


Cavalry Division

Major General Julius Shahel

created 3/21

First Brigade

Brig. Gen. J. T. Copeland


Second Brigade

Colonel R. Butler Price


Third Brigade

Lt. Colonel R. Johnston


Jewett's Independent Brigade

Colonel A. B. Jewett


23rd Maine Infantry Regiment

Colonel William W. Virgin


39th Massachusetts Infantry Regiment

Colonel P. Stearns Davis


14th New Hampshire Infantry Regiment

Colonel Robert Wilson


10th Vermont Infantry Regiment

Colonel Albert B. Jewett


11th New York Cavalry, Cos. E, F & I



10th Massachusetts Independent Battery



Independent Cavalry Brigade

Colonel R. Butler Price


1st Michigan Cavalry Regiment


to Cavalry Div., 2nd Brig

5th New York Cavalry Regiment


to Cavalry Div., 3rd Brig

1st Ohio Cavalry Regiment, Cos. A & C


to Cavalry Div., 2nd Brig

2nd Pennsylvania Cavalry Regiment


to Cavalry Div., 2nd Brig

18th Pennsylvania Cavalry Regiment


to Cavalry Div., 3rd Brig

1st Vermont Cavalry Regiment


to Cavalry Div., 2nd Brig

1st West Virginia Cavalry Regiment


to Cavalry Div., 3rd Brig

District of Washington

Brig. Gen. J. H. Martindale


2nd District of Columbia Infantry Regiment

Colonel Charles M. Alexander


10th New Jersey Infantry Regiment

Colonel William R. Murphy (res. 3/12)

Colonel Henry O. Ryerson (from 3/26)


118th New York Infantry Regiment



152nd New York Infantry Regiment



169th New York Infantry Regiment



27th Pennsylvania Infantry, Co. F



150th Pennsylvania Infantry, Co. K



157th Pennsylvania Infantry (4 cos.)



District of Alexandria

Brig. Gen. John P. Slough


1st District of Columbia Infantry Regt.



26th Michigan Infantry Regiment



153rd New York Infantry Regiment



11th Rhode Island Infantry Regiment

Colonel George E. Church


Artillery Defenses of Alexandria

Brig. Gen. Robert O. Tyler


1st Connecticut Heavy Artillery

Colonel Henry L. Abbott


19th Connecticut Infantry (Hv. Artillery)

Colonel Leverette Wessells


Artillery Brig. S. of the Potomac

Colonel M. Cogswell


1st Massachusetts Heavy Artillery



34th Massachusetts Infantry Regiment

Colonel George D. Wells


2nd New York Heavy Artillery



3rd New York Heavy Artillery Battalion



1st Wisconsin Heavy Artillery



Light Artillery Camp Camp Berry

Brig. Gen. William F. Berry (to 3/3)

Brig. Gen. Albion P. Howe


1st Delaware Battery



1st Michigan Artillery, Battery I


to Cavalry Division (see above)

1st Michigan Artillery, Battery K



1st New York Artillery, Battery A



12th New York Independent Battery



16th New York Independent Battery



19th New York Independent Battery



27th New York Independent Battery



1st West Virginia Artillery, Battery A



Pennsylvania Independent Battery H



About the Author • ©2015 Steve Hawks