Army of The Potomac
Assistant to Gen. McClellan
Brig. Gen. Samuel P. Heintzelman
Commander, III Corps
U.S. Engineer Corps
Commander, 2, Division
Chief of Artillery
Commander, 1st Brigade
1st Massachusetts Infantry
11th Massachusetts Infantry
2nd New Hampshire Infantry
26th Pennsylvania Infantry
26th Pennsylvania Infantry
72nd New York Infantry
Commander, 2nd Brigade
70th New York Infantry
70th New York Infantry
72nd New York Infantry
73rd New York Infantry
74th New York Infantry
Brig. Gen. Francis E. Patterson
Commander, 3rd Brigade
5th New Jersey Infantry
7th New Jersey Infantry
Commander, 3rd Division
2nd U.S. Artillery
Chief of Artillery
Commander, 1st Brigade
87th New York Infantry
Commander, 2nd Brigade
3rd Maine Infantry
4th Maine Infantry
38th New York Infantry
40th New York Infantry
Commander, 3rd Brigade
2nd Michigan Infantry
5th Michigan Infantry
37th New York Infantry
Commander, IV Corps
5th U.S. Cavalry
Commander, 1st Division
Chief of Artillery
67th New York Infantry
Commander, 1st Brigade
Commander, 2nd Brigade
102nd Pennsylvania Infantry
Brig. Gen. Charles Devens, Jr.
Commander, 3rd Brigade
Commander, 2nd Division
5th U.S. Artillery
Chief of Artillery
Adjutant of Artillery
Battery E, 1st New York Light Artillery
1st New York Battery
Brig. Gen. Winfield S. Hancock
Commander, 1st Brigade
6th Maine Infantry
7th Maine Infantry
33rd New York Infantry
49th Pennsylvania Infantry
5th Wisconsin Infantry
Brig. Gen. William T. H. Brooks
Commander, 2nd Brigade
Commander, 3rd Division
Commander, 1st Brigade
Commander, 2nd Brigade
Commander, 3rd Brigade