United States Army > Army of the Potomac
< to July • August 1862 • to September >
Commanded by Major General Erasmus D. Keyes
| First Division | Brigadier General John J. Abercrombie (to 8/12) Major General Darius N. Couch |
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| 1st Brigade | Brig. Gen. Charles Devens Jr. |
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| 2nd Brigade | Brig. Gen.Albion P. Howe | |
| 3rd Brigade | Brig. Gen. John Cochrane | |
| Second Division | Major General John J. Peck | |
| 1st Brigade | Brig. Gen. William H. Emory (to 8/10) Brig. Gen. Henry M. Naglee |
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| 2nd Brigade | Brig. Gen. Henry W. Wessells | |
| 3rd Brigade | Brig. Gen. Otis S. Ferry | |