United States Army > Army of the Potomac > Headquarters
< to July • August 1863 • to September >
Commanded by Brigadier General Robert O. Tyler
| 1st Regular Brigade | Captain Dunbar R. Ransom | |
| 1st United States Artillery, Battery H | 2nd Lieutenant Philip D. Mason | |
| 3rd United States Artillery, Batteries F&K | 1st Lieutenant John G. Turnbull | |
| 4th United States Artillery, Battery C | 1st Lieutenant Evan Thomas | |
| 1st Volunteer Brigade | Lt. Colonel Freeman McGivery | |
| 6th Maine Battery | Lieutenant Edwin Dow | |
| 5th Massachusetts Battery | to 5th Corps Artillery | |
| 9th Massachusetts Battery | 2nd Lieutenant Richard S. Milton | |
| 1st New Jersey Artillery, Battery A | Lieutenant Augustin N. Parsons | |
| 15th New York Independent Battery | Captain Patrick Hart | to 4 Volunteer Brig. (below) |
| Pennsylvania Independent Batteries C&F | ||
| 2nd Volunteer Brigade | Captain Elijah D. Taft | |
| 1st Connecticut Heavy Artillery, Company B | Lieutenant Albert F. Brooker | |
| 1st Connecticut Heavy Artillery, Company M | Captain Franklin A. Pratt | |
| 2nd Connecticut Light Battery (1 sec.) | Captain John W. Sterling | from 22nd Corps, Artilery |
| 1st New York Artillery, Battery B | Captain James McKay Rorty (k 7/3) Lieutenant Robert E. Rogers |
from 2nd Corps Artillery |
| 5th New York Independent Battery | Captain Elijah D. Taft | |
| 3rd Volunteer Brigade | Captain James F. Huntington | |
| 1st Maryland Artillery, Battery A | Captain James H. Rigby | |
| 1st New Hampshire Battery | Captain Frederick M. Edgell | |
| 1st New York Artillery, Battery K (11th New York Battery attached) |
Captain Robert H. Fitzhugh | |
| 15th New York Independent Battery | Captain Patrick Hart | from 4 Volunteer Brig. (below) |
| 1st Ohio Artillery, Battery H | Lieutenant George W. Norton | to 4 Volunteer Brig. (below) |
| 1st Pennsylvania Artillery, Battery F | Captain Robert B. Ricketts | |
| 1st Pennsylvania Artillery, Battery G | Captain L. C. Moore | |
| 1st West Virginia Artillery, Battery C | Captain Wallace Hill | to 4 Volunteer Brig. (below) |
| 4th Volunteer Brigade | Captain Robert H. Fitzhugh | |
| 1st Maryland Artillery, Battery A | Captain James H. Rigby | to 3rd Volunteer Brig. (above) |
| 1st New Jersey Artillery, Battery A | to 1st Volunteer Brig. (above) | |
| 1st New York Artillery, Battery K (11th New York Battery attached) |
Captain Robert H. Fitzhugh | to 3rd Volunteer Brig. (above) |
| 15th New York Independent Battery | from 1 Brig. (above), to 3 Brig. (above) | |
| 1st Ohio Artillery, Battery H | Lieutenant George W. Norton | from 3 Vol. Brig. (above) |
| 1st West Virginia Artillery, Battery C | Captain Wallace Hill | from 3 Volunteer Brig. (above) |
| Ammunition Guard | ||
| 6th New York Heavy Artillery |