The following Union Army units and commanders fought in the Battle of Chickamauga of the American Civil War. The Confederate order of battle is listed separately. Order of battle compiled from the army organization during the campaign.
Abbreviations used
Military Rank
Other
Army of the Cumberland
MG William Rosecrans, Commanding
General Staff<br /> Chief of Staff: BG James A. Garfield
- Col James Barnett, Chief of Artillery
- Col William Truesdale
- Col John P. Sanderson, ADC
- Col Joseph C. McKibbin, ADC
- Ltc Calvin Goddard, Adjutant General
- Ltc Arthur C. Ducat, Inspector General
- Ltc Henry C. Hodges, Quartermaster General
- Ltc Samuel Simmons, Commissary of Subsistence
- Ltc William M. Wiles, Provost Marshal General
- Maj William M. McMichael, Adjutant General
- Maj Frank S. Bond, ADC
- Cpt Horace Porter, Chief of Ordnance
- Cpt Andrew S. Burt, Acting Inspector General
- Cpt Hunter Brooke, Acting Judge Advocate General
- Cpt William E. Merrill, Topographical Engineer
- Cpt William C. Margedant, Topographical Engineer
- Cpt Jesse Merrill, Signal Officer
- Cpt John C. Van Duzer, Telegraph
- Cpt R.S. Thomas, ADC
- Cpt James P. Drouillard, ADC
- Cpt Charles R. Thompson, ADC
- Cpt William Farrar, ADC
- Lt M.J. Kelly, Chief of Couriers
- Lt George Burroughs, Engineer
- Lt William L. Porter, Acting ADC
- Lt James K. Reynolds, Acting ADC
- Glover Perin, Surgeon
- Henry H. Seys, Surgeon
- D. Bache, Assistant Surgeon
- Jeremiah F. Trecy, Chaplain
General Headquarters
Pioneer Brigade<br /> BG James St. Clair Morton, Chief Engineer (w)
- 1st Pioneer Battalion
- 2nd Pioneer Battalion
- 3rd Pioneer Battalion
XIV Corps
MG George Henry Thomas
Headquarters
Provost guard:
Escort:
XX Corps
MG Alexander McDowell McCook
Headquarters
Provost guard:<br> 81st Indiana Infantry, Company H: Cpt William J. Richards
Escort:<br> 2nd Kentucky Cavalry, Company I: Lt George W. L. Batman
XXI Corps
MG Thomas Leonidas Crittenden
Headquarters
Escort:<br> 15th Illinois Cavalry, Company K: Cpt Samuel B. Sherer
Reserve Corps
MG Gordon Granger
Cavalry Corps
BG Robert B. Mitchell
Notes
References