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.

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
MG William Rosecrans, Commanding

Chief of Ordnance: Cpt Horace Porter

General Headquarters
 * 1st Battalion, Ohio Sharpshooters: Cpt Gershom M. Barber
 * 10th Ohio Infantry: Ltc William M. Ward
 * 15th Pennsylvania Cavalry: Col William J. Palmer

XIV Corps
MG George Henry Thomas

Headquarters

Provost guard:
 * 9th Michigan Infantry: Col John Gibson Parkhurst

Escort:
 * 1st Ohio Cavalry, Company L: Cpt John D. Barker

XX Corps
MG Alexander McDowell McCook

Headquarters

Provost guard: 81st Indiana Infantry, Company H: Cpt William J. Richards

Escort: 2nd Kentucky Cavalry, Company I: Lt George W. L. Batman

XXI Corps
MG Thomas Leonidas Crittenden

Headquarters

Escort: 15th Illinois Cavalry, Company K: Cpt Samuel B. Sherer

Reserve Corps
MG Gordon Granger

Cavalry Corps
BG Robert B. Mitchell