The Civil War in the East

U.S. Army

Military District of Washington

Major General Samuel P. Heintzelman


Abercrombie's Division

Brigadier General J. J. Abercrombie


Provisional Brigade

Colonel Clarence Buell


Second Brigade

Brigadier General R. Cowden


Third Brigade

Colonel William Gurney


Casey's Division

Major General Silas Casey


First Brigade

Colonel Dexter Wright

Colonel Frank Fessenden


Second Brigade

Brigadier General E. H. Stoughton


Third Brigade

Colonel Frank Fessenden

Brigadier General Alexander Hays




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


Distict of Alexandria

Brigadier General John P. Slough


1st District of Columbia Infantry Regt.



26th Michigan Infantry Regiment

Colonel Judson S. Farrar

from Michigan

153rd New York Infantry Regiment



11th Rhode Island Infantry Regiment



Artillery, Distict of Alexandria

Brigadier General John Tyler


34th Massachusetts Infantry Regiment



1st Connecticut Heavy Artillery



19th Connecticut Infantry Regiment



1st Massachusetts Heavy Artillery



2nd New York Heavy Artillery



3rd New York Heavy Artillery Battalion



1st Wisconsin Heavy Artillery



Whipple's Command

Brig. Gen. A. W. Whipple


1st Massachusetts Heavy Artillery


2nd New York Heavy Artillery Regiment


4th New York Heavy Artillery Regiment


11th New York Independent Battery


12th New York Independent Battery


1st Wisconsin Heavy Artillery



Grover's Brigade

Colonel A. B. Jewett


22nd Maine Infantry Regiment



23rd Maine Infantry Regiment



39th Massachusetts Infantry Regiment



14th New Hampshire Infantry Regiment



10th Vermont Infantry Regiment



10th Massachusetts Battery



Cavalry Brigade

Colonel R. Butler Price


1st Michigan Cavalry Regiment



5th New York Cavalry Regiment



1st Ohio Cavalry, Cos. A & C



2nd Pennsylvania Cavalry Regiment



1st Vermont Cavalry Regiment



1st West Verginia Cavalry Regiment



Uassigned Infantry

2nd District of Columbia Infantry Regiment

Colonel Charles M. Alexander


10th New Jersey Infantry Regiment

Colonel William R. Murphy


147th New York Infantry Regiment


to Army Potomac Provost Guard

27th Pennsylvania Infantry, Company F



135th Pennsylvania Infantry Regiment

Colonel James R. Porter


143rd Pennsylvania Infantry Regiment



149th Pennsylvania Infantry Regiment



150th Pennsylvania Infantry Regiment



151st Pennsylvania Infantry Regiment



11th Rhode Island Infantry Regiment


to District of Alexandia (see above)

Unassigned Artillery


1st Connecticut Heavy Artillery


to District of Alexandia (see above)

19th Connecticut Infantry Regiment


serving as hv. artillery; to Defences Alexandria

9th New York Independent Battery



16th New York Independent Battery



19th New York Independent Battery



22th New York Independent Battery


to Defences N. of Potmac, 2nd Brig. (above)

27th New York Independent Battery



West Virginia Artillery, Battery A





11th New York Cavalry Regiment

Colonel James B. Swain


About the Author • ©2015 Steve Hawks