U.S. Army - Army of the Potomac

Porter's Division

Brigadier General Fitz John Porter

First Brigade

Bde. Gen. George W. Morrell

62nd Pennsylvania Infantry Regiment

Colonel Samuel W. Black

4th Michigan Infantry Regiment

Colonel Dwight A. Woodbury

9th Massachusetts Infantry Regiment

14th New York Infantry Regiment

Colonel James McQuade

Second Brigade

Bde. Gen. J. H. Martindale

13th New York Infantry Regiment

Colonel John Pickell

41st New York Infantry Regiment

Colonel Leopold Von Gilsa

to Blenker's Division

2nd Maine Infantry Regiment

Colonel Charles W. Roberts

18th Massachusetts Infantry Regiment

22nd Massachusetts Infantry Regiment

Third Brigade

Bde. Gen. D. Butterfield

17th New York Infantry Regiment

Colonel H. Seymour Lansing

25th New York Infantry Regiment

Colonel James E. Kerrigan

44th New York Infantry Regiment

Colonel Stephen W. Stryker

83rd Pennsylvania Infantry Regiment

Colonel John W. McLane

16th Michigan Infantry Regiment

Colonel Thomas Stockton

Artillery

3rd Massachusetts Battery

from Massachusetts 12/27

5th Massachusetts Battery

from Massachusetts 12/27

Batery E, 2nd United States Artillery

Cavalry

3rd Pennsylvania Cavalry Regiment

Colonel William W. Averell (Col. 10/12)

8th Pennsylvania Cavalry Regiment

Colonel Ernest G. Cormann (dis. 12/31)

Colonel David McM. Gregg (after 1/14)