Chickamauga Union order of battle
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
- MG = Major General
- BG = Brigadier General
- Col = Colonel
- Ltc = Lieutenant Colonel
- Maj = Major
- Cpt = Captain
- Lt = 1st Lieutenant
Other
- w = wounded
- mw = mortally wounded
- k = killed
[Army of the Cumberland]
General Staff
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
- 1st Battalion, Ohio Sharpshooters: Cpt Gershom M. Barber
- 10th Ohio Infantry: Ltc William M. Ward
- 15th Pennsylvania Cavalry: Col William J. Palmer
BG James St. Clair Morton, Chief Engineer
- 1st Pioneer Battalion
- 2nd Pioneer Battalion
- 3rd Pioneer Battalion
XIV Corps">XIV Corps (Union Army)">XIV Corps
Headquarters
Provost guard:
- 9th Michigan Infantry: Col John Gibson Parkhurst
- 1st Ohio Cavalry, Company L: Cpt John D. Barker
| Division | Brigade | Regiments and Others |
First Division BG Absalom Baird | 1st Brigade Col Benjamin F. Scribner |
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| First Division BG Absalom Baird | 2nd Brigade BG John C. Starkweather |
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| First Division BG Absalom Baird | 3rd Brigade BG John H. King |
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| First Division BG Absalom Baird | Artillery |
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| Second Division MG James S. Negley | 1st Brigade BG John Beatty |
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| Second Division MG James S. Negley | 2nd Brigade Col Timothy R. Stanley Col William L. Stoughton |
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| Second Division MG James S. Negley | 3rd Brigade Col William Sirwell |
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| Second Division MG James S. Negley | Artillery |
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| Third Division BG John Milton Brannan | 1st Brigade Col John M. Connell |
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| Third Division BG John Milton Brannan | 2nd Brigade Col John T. Croxton Col William H. Hays |
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| Third Division BG John Milton Brannan | 3rd Brigade Col Ferdinand Van Derveer |
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| Third Division BG John Milton Brannan | Artillery |
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| Fourth Division MG Joseph J. Reynolds | 1st Brigade Col John T. Wilder |
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| Fourth Division MG Joseph J. Reynolds | 2nd Brigade Col Edward A. King Col Milton S. Robinson |
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| Fourth Division MG Joseph J. Reynolds | 3rd Brigade BG John B. Turchin |
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| Fourth Division MG Joseph J. Reynolds | Artillery |
|
XX Corps">XX Corps (Union Army)">XX Corps
MG Alexander McDowell McCookHeadquarters
Provost guard:
81st Indiana Infantry, Company H: Cpt William J. Richards
Escort:
2nd Kentucky Cavalry, Company I: Lt George W. L. Batman
| Division | Brigade | Regiments and Others |
First Division BG Jefferson C. Davis | 1st Brigade Col P. Sidney Post |
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| First Division BG Jefferson C. Davis | 2nd Brigade BG William P. Carlin |
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| First Division BG Jefferson C. Davis | 3rd Brigade Col Hans C. Heg Col John A. Martin |
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| Second Division BG Richard W. Johnson | 1st Brigade BG August Willich |
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| Second Division BG Richard W. Johnson | 2nd Brigade Col Joseph B. Dodge |
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| Second Division BG Richard W. Johnson | 3rd Brigade Col Philemon P. Baldwin Col William W. Berry |
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| Third Division MG Philip Sheridan | 1st Brigade BG William Haines Lytle Col Silas Miller |
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| Third Division MG Philip Sheridan | 2nd Brigade Col Bernard Laiboldt |
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| Third Division MG Philip Sheridan | 3rd Brigade Col Luther Prentice Bradley Col Nathan H. Walworth |
|
XXI Corps">XXI Corps (Union Army)">XXI Corps
MG Thomas Leonidas CrittendenHeadquarters
Escort:
15th Illinois Cavalry, Company K: Cpt Samuel B. Sherer
| Division | Brigade | Regiments and Others |
First Division BG Thomas J. Wood | 1st Brigade Col George P. Buell |
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| First Division BG Thomas J. Wood | 2nd Brigade BG George D. Wagner |
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| First Division BG Thomas J. Wood | 3rd Brigade Col Charles G. Harker |
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| First Division BG Thomas J. Wood | Artillery |
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| Second Division MG John M. Palmer | 1st Brigade BG Charles Cruft |
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| Second Division MG John M. Palmer | 2nd Brigade BG William Babcock Hazen |
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| Second Division MG John M. Palmer | 3rd Brigade Col William Grose |
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| Second Division MG John M. Palmer | Artillery Cpt William E. Standart |
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| Second Division MG John M. Palmer | Unattached |
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| Third Division BG Horatio P. Van Cleve | 1st Brigade BG Samuel Beatty |
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| Third Division BG Horatio P. Van Cleve | 2nd Brigade Col George F. Dick |
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| Third Division BG Horatio P. Van Cleve | 3rd Brigade Col Sidney M. Barnes |
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| Third Division BG Horatio P. Van Cleve | Artillery |
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Reserve Corps
MG Gordon Granger| Division | Brigade | Regiments and Others |
First division BG James B. Steedman | 1st Brigade BG Walter C. Whitaker |
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| First division BG James B. Steedman | 2nd Brigade Col John G. Mitchell |
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| Second Division -- | 2nd Brigade Col Daniel McCook, Jr. |
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Cavalry Corps">Cavalry Corps (Union Army)#Western Cavalry Corps">Cavalry Corps
BG Robert B. Mitchell| Division | Brigade | Regiments and Others |
First Division Col Edward M. McCook | 1st Brigade Col Archibald P. Campbell |
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| First Division Col Edward M. McCook | 2nd Brigade Col Daniel M. Ray |
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| First Division Col Edward M. McCook | 3rd Brigade Col Louis D. Watkins |
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| Second Division BG George Crook | 1st Brigade Col Robert H. G. Minty |
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| Second Division BG George Crook | 2nd Brigade Col Eli Long |
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| Second Division BG George Crook | Artillery |
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