U.S. Army
Army of the Potomac
Artillery
Artillery Reserve - Brigadier General William Hays
2nd Battery, Maine Light Artillery - Captain Charles E. Stubbs
3rd Battery, Maine Light Artillery - Captain Ezekiel R. Mayo
4th Battery, Maine Light Artillery - Captain Charles W. White
6th Battery, Maine Light Artillery - Captain William H. Rogers
Second Corps
Second Division
1st Brigade - Colonel William A. Olmsted
19th Maine Infantry - Colonel Isaac W. Starbird (w, April 7)
Third Division
1st Brigade - Brigadier General Régis de Trobriand
1st Maine Heavy Artillery - Colonel Russell B. Shepherd
2nd Brigade - Brigadier General Byron R. Pierce
17th Maine Infantry - Lieutenant Colonel William Hobson (w, April 6)
Fifth Corps
First Division
3rd Brigade - Brevet Major General Joseph Bartlett (^, April 1), Brevet Brigadier General Alfred L. Pearson
1st Maine Sharpshooters - Captain George R. Abbott
20th Maine Infantry - Lieutenant Colonel Walter G. Morrill
Third Division
2nd Brigade - Brigadier General Henry Baxter
16th Maine Infantry - Colonel Charles W. Tilden
Sixth Corps
Second Division
3rd Brigade - Colonel Thomas W. Hyde
1st Maine Infantry - Lieutenant Colonel Stephen C. Fletcher
Ninth Corps
Second Division
2nd Brigade - Brigadier General Simon Goodell Griffin
31st Maine Infantry - Lieutenant Colonel Edward L. Getchell (w, April 2), Captain Ebenezer S. Kyes
Artillery Brigade - Brevet Brigadier General John C. Tidball
7th Battery, Maine Light Artillery - Captain Adelbert B. Twitchell
Cavalry Corps
Second Division
3rd Brigade - Brevet Brigadier General Charles H. Smith
1st Maine Cavalry - Lieutenant Colonel Jonathan P. Cilley
Army of the James
Twenty-Fourth Corps
First Division
3rd Brigade - Colonel George B. Dandy
11th Maine Infantry - Lieutenant Colonel Jonathan A. Hill (w, April 9), Major Charles P. Baldwin (w, April 1), Captain Henry C. Adams
4th Brigade - Colonel Harrison S. Fairchild
8th Maine Infantry - Lieutenant Colonel Edward A. True, Captain Edward H. Reynolds (in command April 6)
