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

Second Division

Brigadier General Romeyn B. Ayres

First Brigade

Colonel C. P. Stone (until 9/10)

Coloenl F. Winthrop (9/10 - 9/30)

Lt. Colonel E. S. Otis (after 9/30)

5th New York Veteran Infantry

15th New York Heavy Artillery

2nd United States Infantry Regiment

10th United States Infantry Regiment

11th United States Infantry Regiment

12th United States Infantry Regiment

14th United States Infantry Regiment

17th United States Infantry Regiment

Second Brigade

Colonel S. A. Graham

1st Maryland Infantry Regiment

4th Maryland Infantry Regiment

7th Maryland Infantry Regiment

8th Maryland Infantry Regiment

Purnell Maryland Legion

Third Brigade

Colonel J. W. Hoffman (to 9/14)

Colonel A. H. Grimshaw (after 9/14)

3rd Delaware Infantry

4th Delaware Infantry

76th New York Infantry Regiment

to 3rd Div., 3rd Bde.

95th New York Infantry Regiment

to 3rd Div., 3rd Bde.

147th New York Infantry Regiment

to 3rd Div., 3rd Bde.

56th Pennsylvania Infantry Regiment

to 3rd Div., 3rd Bde.

157th Pensylvania Infantry Regiment

190th Pensylvania Infantry Regiment

from 3rd Div., 1st Bde.

191st Pensylvania Infantry Regiment

from 3rd Div., 1st Bde.

210th Pensylvania Infantry Regiment

from Harrisburg 9/24