U.S. Army - Army of the Potomac

Headquarters

Headquarters Escort

Oneida (New York) Cavalry Company

Captain Daniel P. Mann

6th Pennsylvania Cavalry Regiment,

Companies E and I

Captain Emlen N. Carpenter (Co. E)

Captain James Starr (Co. I)

Provost Guard

Brigadier General Marsena R. Patrick

93rd New York Infantry Regiment

Colonel John S. Crocker

94th New York Infantry Regiment

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

8th United States Infantry Regiment,
Companies A, B, C, D, F & G

Captain Edwin W. H. Read

Provost Guard-Patrick's Brigade

Colonel William F. Rogers

21st New York Infantry Regiment

Lt. Colonel Chester W. Steainberg

mustered out 5/18

23rd New York Infantry Regiment

Colonel Henry C. Hoffman

mustered out 5/22

35th New York Infantry Regiment

Colonel John G. Todd

80th New York Infantry Regiment

Colonel Theodore B. gates

Maryland Light Artillery, Battery B

Captain Alonzo Snow

to Artillery Reserve

12th Battery Ohio Light Artillery

Captain Aaron C. Johnson

to Artillery Reserve

Volunteer Engineer Brigade

Brigadier General Henry W. Benham

15th New York Engineer Regiment

Colonel Clinton G. Colgate

50th New York Engineer Regiment

Colonel Charles B. Stuart

Regular Engineer Battalion

Captain Chauncey B. Reese

Siege Artillery

1st Connecticut Heavy Artillery, AB&M

to Artilery Reserve 2nd Volunteer Bde.

Artillery Reserve

Captain William M. Graham (until 5/2)

Brigadier General Robert O. Tyler (after 5/2)

First Regular Brigade

Captain Dunbar R. Ransom

Second Regular Brigade

Captain John C. Tidball

First Volunteer Brigade

Lt. Colonel Freeman McGilvery

Second Volunteer Brigade

Captain Elijah D. Taft

Third Volunteer Brigade

Captain James F. Huntington

Fourth Volunteer Brigade

Captain Robert H. Fitzhugh

Headquarters Staff

Chief of Staff

Major General Daniel Butterfield

Chief of Artillery

Brigadier General Henry J. Hunt

Chief Engineer

Brigadier General Gouverneur K. Warren

Assistant Adjutant General

Brigadier General Seth Williams

Chief Quartermaster

Brigadier General Rufus Ingalls

Medical Director

Doctor Jonathan Letterman

Commissary of Substance

Colonel Henry Francis Clarke

Assistant Inspector General

Colonel Edmund Schriver

Bureau of Information

Colonel George H. Sharpe

Chief Signals Officer

Captain Samuel T. Cushing