U.S. Army - Army of the Potomac - Second Army Corps

First Division

Brigadier General Israel B. Richardson (mw 9/17)

Brigadier General John Caldwell (9/17)

Brigadier General Winfield S. Hancock (after 9/17)

First Brigade

Brigadier General John C. Caldwell

5th New Hampshire Infantry Regiment

Colonel Edward E. Cross (w 9/17)

7th New York Infantry Regiment

Captain Charles Brestel

61st New York Infantry Regiment

Colonel Francis Barlow (w 9/17)

Lt. Colonel Nelson A. Miles (after 9/17)

64th New York Infantry Regiment

(see above)

combined with the 61st New York Infantry

81st Pennsylvania Infantry Regiment

Major Henry Boyd McKeen

Second "Irish" Brigade

Brigadier General Thomas F. Meagher (except 9/17 - 9/18)

Colonel John Burke (9/17 - 9/18)

29th Massachusetts Infantry Regiment

Lt. Colonel Joseph H. Barnes

63rd New York Infantry Regiment

Colonel John Burke (until 9/17)

Lt. Colonel Henry Fowler (w 9/17)

Captain Joseph O'Neill (after 9/17)

69th New York Infantry Regiment

Lt. Colonel James Kelly (w 9/17)

Major James Cavanagh (after 9/17)

88th New York Infantry Regiment

Lt. Colonel Patrick Kelly

145th Pennsylvania Infantry Regiment

Colonel Hiram L. Brown

from Pa. 9/17

Third Brigade

Brigadier General W. H. French (untli 9/6)

Colonel John R. Brooke (after 9/6)

2nd Delaware Infantry Regiment

Captain David L. Stricker

52nd New York Infantry Regiment

Colonel Paul Frank

57th New York Infantry Regiment

Lt. Colonel Philip J. Parisen (k 9/17)

Major Alford B. Chapman (after 9/17)

66th New York Infantry Regiment

Captain Julius Wehle

53rd Pennsylvania Infantry Regiment

Colonel John R. Brooke (until 9/6)

Lt. Colonel Richards McMichael

Artillery

Battery B, 1st New York Artillery

Captain Rufus D. Pettit

Battery G, 1st New York Artillery

4th United States Artillery, Batts. A & C

Lieutenant Evan Thomas