# Battle of Peachtree Creek order of battle: Union

The following Union Army units and commanders fought in the Battle of Peachtree Creek of the American Civil War. The Confederate order of battle is listed separately.

## Abbreviations used
### Military rank

* MG = Major General
* BG = Brigadier General
* Col = Colonel
* Cpt = Captain

### Other

* w = wounded
* k = killed

## Army of the Cumberland

MG George Henry Thomas

### IV Corps

MG Oliver O. Howard
| Division | Brigade | Regiments and Others |
| First Division   MG David S. Stanley | 1st Brigade   Col Isaac M. Kirby | 21st Illinois 38th Illinois 31st Indiana 81st Indiana 2nd Kentucky 90th Ohio 101st Ohio |
| First Division   MG David S. Stanley | 2nd Brigade   Col Jacob E. Taylor | 96th Illinois 115th Illinois 35th Indiana 84th Indiana 21st Kentucky 40th Ohio 51st Ohio |
| First Division   MG David S. Stanley | 3rd Brigade   Col William Grose | 59th Illinois 75th Illinois 80th Illinois 84th Illinois 9th Indiana 30th Indiana 36th Indiana 77th Pennsylvania |
| First Division   MG David S. Stanley | Artillery   Cpt Theodore Thomasson | 5th Indiana Light Battery Battery B, Pennsylvania Light |
| Second Division   BG John Newton | 1st Brigade   BG Nathan Kimball | 44th Illinois 36th Illinois 73rd Illinois 88th Illinois 2nd Missouri 15th Missouri 24th Wisconsin |
| Second Division   BG John Newton | 2nd Brigade   Col John W. Blake | 100th Illinois 40th Indiana 57th Indiana 28th Kentucky 97th Ohio |
| Second Division   BG John Newton | 3rd Brigade   BG Luther P. Bradley | 22nd Illinois 27th Illinois 42nd Illinois 51st Illinois 79th Illinois 3rd Kentucky 64th Ohio 125th Ohio |
| Second Division   BG John Newton | Artillery   Cpt Charles Aleshire  Cpt Wilbur Goodspeed | Battery M, 1st Illinois Light Battery A, 1st Ohio Light |
| Third Division   BG Thomas J. Wood | 1st Brigade   Col William H. Gibson | 25th Illinois 35th Illinois 89th Illinois 8th Kansas 15th Ohio 49th Ohio 15th Wisconsin 124th Ohio |
| Third Division   BG Thomas J. Wood | 2nd Brigade   BG William B. Hazen | 59th Illinois 6th Indiana 5th Kentucky 6th Kentucky 23rd Kentucky 1st Ohio 6th Ohio 41st Ohio 71st Ohio 93rd Ohio |
| Third Division   BG Thomas J. Wood | 3rd Brigade   Col Frederick Knefler | 79th Indiana 86th Indiana 9th Kentucky 17th Kentucky 13th Ohio 19th Ohio 59th Ohio |
| Third Division   BG Thomas J. Wood | Artillery   Cpt Cullen Bradley | Bridges' Illinois Light Battery 6th Ohio Light Battery |

### XIV Corps

MG John M. Palmer
| Division | Brigade | Regiments and Others |
| First Division   BG Richard W. Johnson | 1st Brigade   Col Anson G. McCook | 104th Illinois: Ltc Douglas Hapeman 42nd Indiana 88th Indiana 15th Kentucky 2nd Ohio 33rd Ohio 94th Ohio 10th Wisconsin 21st Wisconsin: Maj Michael H. Fitch |
| First Division   BG Richard W. Johnson | 2nd Brigade   BG John H. King | 11th Michigan 15th U.S. (6 companies) 15th U.S. (9 companies) 16th U.S. (4 companies) 18th U.S. (8 companies) 18th U.S. (4 companies) 19th U.S. (5 companies) |
| First Division   BG Richard W. Johnson | 3rd Brigade   Col Marshall F. Moore | 37th Indiana 38th Indiana 21st Ohio 74th Ohio 78th Pennsylvania 79th Pennsylvania 1st Wisconsin |
| First Division   BG Richard W. Johnson | Artillery   Cpt Lucius Drury | 1st Illinois Light Battery Battery I, 1st Ohio |
| Second Division   BG Jefferson C. Davis | 1st Brigade   BG James D. Morgan | 10th Illinois 16th Illinois 60th Illinois 10th Michigan 14th Michigan 17th New York |
| Second Division   BG Jefferson C. Davis | 2nd Brigade   Col John G. Mitchell | 34th Illinois 78th Illinois 98th Ohio 108th Ohio 113th Ohio 121st Ohio |
| Second Division   BG Jefferson C. Davis | 3rd Brigade   Col Caleb J. Dilworth | 85th Illinois 86th Illinois 110th Illinois 125th Illinois 22nd Indiana 52nd Ohio |
| Second Division   BG Jefferson C. Davis | Artillery   Cpt Charles Barnett | 2nd Illinois Light Artillery, Battery I 2nd Minnesota Battery (detachment) 5th Wisconsin Light Battery |

### XX Corps

MG Joseph Hooker
| Division | Brigade | Regiments and Others |
| First Division   BG Alpheus S. Williams | 1st Brigade   BG Joseph F. Knipe | 5th Connecticut 3rd Maryland (detachment) 123rd New York 141st New York 46th Pennsylvania 3rd Wisconsin |
| First Division   BG Alpheus S. Williams | 2nd Brigade   BG Thomas H. Ruger | 27th Indiana 2nd Massachusetts 13th New Jersey 107th New York 150th New York |
| First Division   BG Alpheus S. Williams | 3rd Brigade   Col James S. Robinson | 82nd Illinois 101st Illinois 45th New York 143rd New York 61st Ohio 82nd Ohio 31st Wisconsin (Transferred from Nashville, TN, on July 21, 1864.) |
| First Division   BG Alpheus S. Williams | Artillery   Cpt John D. Woodbury | Battery I, 1st New York Light Battery M, 1st New York Light |
| Second Division   BG John W. Geary | 1st Brigade   Col Charles Candy | 5th Ohio 7th Ohio (Mustered out on July 11, 1864.) 29th Ohio 66th Ohio 28th Pennsylvania 147th Pennsylvania |
| Second Division   BG John W. Geary | 2nd Brigade   Col Patrick Henry Jones | 33rd New Jersey 119th New York 134th New York 154th New York 73rd Pennsylvania 109th Pennsylvania |
| Second Division   BG John W. Geary | 3rd Brigade   Col David Ireland | 60th New York 102nd New York 137th New York 149th New York 29th Pennsylvania 111th Pennsylvania: Col George A. Cobham, Jr. (k) |
| Third Division   BG William T. Ward | 1st Brigade   Col Benjamin Harrison | 102nd Illinois 105th Illinois 129th Illinois 70th Indiana 79th Ohio |
| Third Division   BG William T. Ward | 2nd Brigade   Col John Coburn | 33rd Indiana 85th Indiana 19th Michigan 22nd Wisconsin |
| Third Division   BG William T. Ward | 3rd Brigade   Col James Wood | 20th Connecticut 33rd Massachusetts 136th New York 55th Ohio 73rd Ohio 26th Wisconsin |
| Third Division   BG William T. Ward | Artillery   Cpt Marco B. Gary | Battery I, 1st Michigan Light: Cpt Luther R. Smith Battery C, 1st Ohio Light |
| Unattached Units | Reserve Brigade   Col Heber Le Favour | 9th Michigan 22nd Michigan |
| Unattached Units | Pontoniers   Col George P. Buell | 58th Indiana |
| Unattached Units | Siege Artillery   Cpt Arnold Sutermeister | 11th Indiana Battery |