United States Army > Army of the Potomac


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Commanded by Major General Winfield S. Hancock

First Division Brigadier General Francis Barlow
1st Brigade Colonel Nelson A. Miles (to BG 5/12)
2nd Brigade Colonel T. A. Smythe (to 5/17)
Colonel R. Byrnes
3rd Brigade Colonel Paul Frank (to 5/10)
Colonel H. L. Brown (to 5/12)
Colonel C. D. McDougal
4th Brigade Colonel John R. Brooke
Second Division Major General John Gibbon
1st Brigade Brigadier General Alexander Webb (to 5/12)
Colonel H. B. McKean
2nd Brigade Brigadier General Joshua T. Owen
3rd Brigade Colonel Samuel S. Carroll (to 5/13)
Colonel Theodore G. Ellis (to 5/17)
Colonel Thomas A. Smythe
4th Brigade Colonel M. Murphy (to 5/18)
Colonel J. P. McIvor (to 5/29)
Brigadier General Robert O. Tyler
 created 5/9
Third Division Major General David B. Birney
1st Brigade Brigadier General J. H. H. Ward (to 5/12)
Colonel T. W. Egan
2nd Brigade Brigadier General Alexander Hays (to 5/5)
Colonel John S. Crocker (to 5/18)
Colonel Elijah Walker (to 5/23)
Colonel Byron R. Pierce (to 5/29)
Colonel Thomas R. Tannatt
3rd Brigade Brigadier General Gershom Mott (to 5/2)
Colonel Robert McAllister
recreated 5/13
4th Brigade Colonel William R. Brewster created 5/13
Fourth Division Brigadier General John B. Carr (to 5/2)
Brigadier General Gershom Mott
1st Brigade Brigadier General Gershom Mott  to 3 Brig., 3 Div. 5/13 (above)
2nd Brigade Colonel William R. Brewster  to 4 Brig., 3 Div. 5/13 (above)
Tyler’s Heavy Artillery Division Brigadier General Robert O. Tyler (to 5/29) from Defences Washington, 5/15
1st Maine Heavy Artillery Colonel Daniel Chaplin to 3 Div., 3 Brig. 5/24
1st Massachusetts Heavy Artillery Colonel Thomas R. Tannatt to 3 Div., 2 Brig.
2nd New York Heavy Artillery to 1 Div., 1 Brig.
7th New York Heavy Artillery to 1 Div., 4 Brig.
8th New York Heavy Artillery to 2 Div., 4 Brig.
Artillery Brigade Colonel John C. Tidball 
6th Maine Indpendent Battery Captain Edwin B. Dow
10th Massachusetts Battery Captain J. Henry Sleeper
1st New Hampshire Battery Captain Frederick M. Edgell
1st New Jersey Artillery, Battery B from Artillery Reserve, 2nd Brig.
1st New York Artillery, Battery G Captain Nelson Ames
4th New York Heavy Artillery, 3rd Battalion Lieutenant Colonel Thomas Alcock
4th New York Heavy Artillery, Co. D from 5th Corps Artillery
11th New York Independent Battery from Artillery Reserve, 3rd Brig.
12th New York Independent Battery from Artillery Reserve, 2nd Brig.
1st Pennsylvania Artillery, Battery F Captain Bruce Ricketts
1st Rhode Island Artillery, Battery A Captain William A. Arnold
1st Rhode Island Artillery, Battery B Lieutenant Fred T. Brown
4th United States Artillery, Battery K Lieutenant John W. Roder
5th United States Artillery, Batteries C&K Lieutenant James Gilliss