The Civil War in the East

U.S. Army

22nd Army Corps, Department of Washington

Major General C. C. Augur




Defences North of the Potomac

Lt. Colonel J. A. Haskins (to July 8)

Brigadier General Martin D. Hardin


First Brigade

Colonel W. H. Hayward (to 7/6)

Colonel J.M.C. Marble


Second Brigade

Colonel J.M.C. Markle (to 7/6)

Colonel W.H. Hayward


Third Brigade

Lt. Colonel J.H. Oberteuffer


Defences South of the Potomac

Bde. Gen. G. A. DeRussy


First Brigade

Colonel J.C. Lee (to 7/9)

Colonel J.N.G. Whistler


Second Brigade

Colonel W.S. Irwin

Colonel T. Wilhelmn


Third Brigade

Colonel W.S. Irwin (after 7/10)


Fourth Brigade

Major C.C. Meservey


Independent Cavalry Brigade

Colonel C. R. Lowell, Jr.

Colonel H.M. Lazelle


2nd Massachusetts Cavalry Regiment



13th New York Cavalry Regiment



16th New York Cavalry Regiment



District of Alexandria

Brig. Gen. John P. Slough


4th Delaware Infantry Regiment



1st District of Columbia Infantry Regt.



26th Michigan Infantry, Company F


from 2nd Corps, 1st Div., 1st Bde.

Pennsylvania Independent Battery H



St. Mary's District

Colonel A. G. Draper (to 7/2)

Bde. Gen. James Barnes


5th Massachusetts Cavalry Regiment


from Dept. Va. & N.C., 18th Corps, 3 Div.

139th Ohio Infantry Regiment



4th Rhode Island Infantry


to Army Potomac, 9th Corps, 1st Div.

2nd Wisconsin Battery



District of Washington

Colonel M. N. Wisewell


First Brigade

Colonel M. N. Wisewell (to 7/6)

Colonel G. W. Gile


Second Brigade

Colonel W. H. Brownd


150th Pennsylvania Infantry, Co. K



Light Artillery Camp Camp Berry

Bde. Gen. A. P. Howe (to 7/9)

Major J. A. Hall


3rd Maine Light Artillery


to Army of the Potomac, 9th Army Corps

16th Massachusetts Battery


from Defences S. Potomac, 2nd Bde.

6th New York Independent Battery



17th New York Independent Battery


to Dept. Va. & N.C., 18th Corps

1st United States Artillery, Battery K



3rd United States Artillery, Batteries L&M


from Army Potomac, 9th Corps Artillery

4th United States Artillery, Battery A



5th United States Artillery, Battery F


to Dept. Va. & N.C., 18th Corps

5th United States Artillery, Battery I



5th United States Artillery, Battery L


to Dept. W. Virginia, 2nd Cavalry Div.




About the Author • ©2015 Steve Hawks