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[1] during the campaign.[2]

Abbreviations used

Military Rank

MG = Major General
BG = Brigadier General
Col = Colonel
Ltc = Lieutenant Colonel
Maj = Major
Cpt = Captain
Lt = 1st Lieutenant

Other

Army of the Cumberland

MG William Rosecrans, Commanding

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

General Headquarters

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

Pioneer Brigade
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:

9th Michigan Infantry:[3] Col John Gibson Parkhurst

Escort:

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	38th Indiana: Ltc Daniel F. Griffin 2nd Ohio: Ltc Obadiah C. Maxwell (w), Maj William T. Beatty (w&c), Cpt James Warnock 33rd Ohio: Col Oscar F. Moore 94th Ohio: Maj Rue P. Hutchins 10th Wisconsin: Ltc John H. Ely (mw&c), Cpt Jacob W. Roby
	2nd Brigade BG John C. Starkweather (w)	24th Illinois: Col Geza Mihalotzy (w), Cpt August Mauff 79th Pennsylvania: Col Henry A. Hambright 1st Wisconsin: Ltc George B. Bingham 21st Wisconsin: Ltc Harrison C. Hobart (w), Cpt Charles H. Walker
	3rd Brigade BG John H. King	15th United States, 1st Battalion: Cpt Albert B. Dod 16th United States, 1st Battalion:[4] Maj Sidney Coolidge (k), Cpt Robert E.A. Crofton 18th United States, 1st Battalion: Cpt George W. Smith 18th United States, 2nd Battalion: Cpt Henry Haymond 19th United States, 1st Battalion: Ltc Samuel K. Dawson (w), Cpt Edmund L. Smith
	Artillery	4th Battery, Indiana Light: Lt David Flansburg (w&c), Lt Henry J. Willits Battery A, 1st Michigan Light: Lt George W. Van Pelt (k), Lt Almerick W. Wilbur Battery H, 5th United States: Lt Howard Mather Burnham (mw), Lt Joshua A. Fessenden (w)
Second Division MG James S. Negley	1st Brigade BG John Beatty	104th Illinois: Ltc Douglas Hapeman 42nd Indiana: Ltc William T. B. McIntire 88th Indiana: Col George Humphrey 15th Kentucky: Col Marion C. Taylor
	2nd Brigade Col Timothy R. Stanley (w) Col William L. Stoughton	19th Illinois: Ltc Alexander W. Raffen 11th Michigan: Col William L. Stoughton, Ltc Melvin Mudge (w) 18th Ohio: Ltc Charles H. Grosvenor
	3rd Brigade Col William Sirwell	37th Indiana: Ltc William D. Ward 21st Ohio: Ltc Dwella M. Stoughton (mw), Maj Arnold McMahan (w), Cpt Charles H. Vantine 74th Ohio: Cpt Joseph Fisher 78th Pennsylvania: Ltc Archibald Blakeley
	Artillery	Bridges' Battery, Illinois Light: Cpt Lyman Bridges Battery G, 1st Ohio Light: Cpt Alexander Marshall Battery M, 1st Ohio Light: Cpt Frederick Schultz
Third Division BG John Milton Brannan	1st Brigade Col John M. Connell	82nd Indiana: Col Morton C. Hunter 17th Ohio: Ltc Durbin Ward (w) 31st Ohio: Ltc Frederick W. Lister 38th Ohio:[5] Col Edward H. Phelps
	2nd Brigade Col John T. Croxton (w) Col William H. Hays	10th Indiana: Col William B. Carroll (mw), Ltc Marsh B. Taylor 74th Indiana: Col Charles W. Chapman 4th Kentucky: Ltc P. Burgess Hunt (w), Maj Robert M. Kelly 10th Kentucky: Col William H. Hays, Ltc Gabriel C. Wharton 14th Ohio: Ltc Henry D. Kingsbury
	3rd Brigade Col Ferdinand Van Derveer	87th Indiana: Col Newell Gleason 2nd Minnesota: Col James George 9th Ohio: Col Gustave Kammerling 35th Ohio: Ltc Henry Van Ness Boynton
	Artillery	Battery D, 1st Michigan Light: Cpt Josiah W. Church Battery C, 1st Ohio Light: Lt Marco B. Gary Battery I, 4th United States: Lt Frank G. Smith
Fourth Division MG Joseph J. Reynolds	1st Brigade[6] Col John T. Wilder	92nd Illinois: Col Smith D. Atkins 98th Illinois: Col John J. Funkhouser (w), Ltc Edward Kitchell 123rd Illinois: Col James Monroe 17th Indiana: Maj William T. Jones 72nd Indiana: Col Abram O. Miller
	2nd Brigade Col Edward A. King (k) Col Milton S. Robinson	68th Indiana: Cpt Harvey J. Espy (w) 75th Indiana: Col Milton S. Robinson, Ltc William O'Brien 101st Indiana: Ltc Thomas Doan 105th Ohio: Maj George T. Perkins (w)
	3rd Brigade BG John B. Turchin	18th Kentucky: Ltc Hubbard K. Milward (w), Cpt John B. Heltemes 11th Ohio: Col Philander P. Lane 36th Ohio: Col William G. Jones (k), Ltc Hiram F. Devol 92nd Ohio: Col Benjamin D. Fearing (w), Ltc Douglas Putnam, Jr. (w)
	Artillery	18th Battery, Indiana Light: Cpt Eli Lilly 19th Battery, Indiana Light: Cpt Samuel J. Harris (w), Lt Robert S. Lackey 21st Battery, Indiana Light: Cpt William W. Andrew

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

Division	Brigade	Regiments and Others
First Division BG Jefferson C. Davis	1st Brigade[7] Col P. Sidney Post	59th Illinois: Ltc Joshua C. Winters 74th Illinois: Col Jason Marsh 75th Illinois: Col John E. Bennett 22nd Indiana: Col Michael Gooding 5th Battery, Wisconsin Light Artillery: Cpt George Q. Gardner
	2nd Brigade BG William P. Carlin	21st Illinois: Col John W. S. Alexander (k), Cpt Chester K. Knight 38th Illinois: Ltc Daniel H. Gilmer (k), Cpt Willis G. Whitehurst 81st Indiana: Cpt Nevil B. Boone, Maj James E. Calloway 101st Ohio: Ltc John Messer (w), Maj Bedan B. McDonald (w), Cpt Leonard D. Smith 2nd Battery, Minnesota Light Artillery: Lt Albert Woodbury (mw), Lt Richard L. Dawley
	3rd Brigade Col Hans C. Heg (mw) Col John A. Martin	25th Illinois: Maj Samuel D. Wall (w), Cpt Wesford Taggart 35th Illinois: Ltc William P. Chandler 8th Kansas: Col John Alexander Martin, Ltc James L. Abernathy 15th Wisconsin: Ltc Ole C. Johnson (c) 8th Battery, Wisconsin Light Artillery: Lt John D. McLean
Second Division BG Richard W. Johnson	1st Brigade BG August Willich	89th Illinois: Ltc Duncan J. Hall (k), Maj William D. Williams 32nd Indiana: Ltc Frank Erdelmeyer 39th Indiana:[8] Col Thomas J. Harrison 15th Ohio: Ltc Frank Askew 49th Ohio: Maj Samuel F. Gray (w), Cpt Luther M. Strong Battery A, 1st Ohio Light Artillery: Cpt Wilbur F. Goodspeed
	2nd Brigade Col Joseph B. Dodge	79th Illinois: Col Allen Buckner 29th Indiana: Ltc David M. Dunn 30th Indiana: Ltc Orrin D. Hurd 77th Pennsylvania: Col Thomas E. Rose (c), Cpt Joseph J. Lawson 20th Battery, Ohio Light Artillery: Cpt John F. Edward Grosskopff
	3rd Brigade Col Philemon P. Baldwin (k) Col William W. Berry	6th Indiana: Ltc Hagerman Tripp (w), Maj Calvin D. Campbell 5th Kentucky: Col William W. Berry, Cpt John M. Huston 1st Ohio: Ltc Bassett Langdon 93rd Ohio: Col Hiram Strong (mw), Ltc William H. Martin 5th Battery, Indiana Light Artillery: Cpt Peter Simonson
Third Division MG Philip Sheridan	1st Brigade BG William Haines Lytle (k) Col Silas Miller	36th Illinois: Col Silas Miller, Ltc Porter C. Olson 88th Illinois: Ltc Alexander S. Chadbourne 21st Michigan: Col William B. McCreery (w&c), Maj Seymour Chase 24th Wisconsin: Ltc Theodore S. West (w&c), Maj Carl von Baumbach 11th Battery, Indiana Light Artillery: Cpt Arnold Sutermeister
	2nd Brigade Col Bernard Laiboldt	44th Illinois: Col Wallace W. Barrett (w) 73rd Illinois: Col James F. Jaquess 2nd Missouri: Maj Arnold Beck 15th Missouri: Col Joseph Conrad Battery G, 1st Missouri Light Artillery: Lt Gustavus Schueler
	3rd Brigade Col Luther Prentice Bradley (w) Col Nathan H. Walworth	22nd Illinois: Ltc Francis Swanwick 27th Illinois: Col Jonathan R. Miles 42nd Illinois: Col Nathan H. Walworth, Ltc John A. Hottenstein 51st Illinois: Ltc Samuel B. Raymond Battery C, 1st Illinois Light Artillery: Cpt Mark H. Prescott

XXI Corps

MG Thomas Leonidas Crittenden

Headquarters

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	100th Illinois: Col Frederick A. Bartleson (w&c), Maj Charles M. Hammond 58th Indiana: Ltc James T. Embree 13th Michigan: Col Joshua B. Culver (w), Maj Willard G. Eaton 26th Ohio: Ltc William H. Young
	2nd Brigade[9] BG George D. Wagner	15th Indiana: Col Gustavus A. Wood 40th Indiana: Col John W. Blake 57th Indiana: Ltc George W. Lennard 97th Ohio: Ltc Milton Barnes
	3rd Brigade Col Charles G. Harker	3rd Kentucky: Col Henry C. Dunlap 64th Ohio: Col Alexander McIlvaine 65th Ohio: Ltc Horatio N. Whitbeck (w), Maj Samuel C. Brown (mw), Cpt Thomas Powell 125th Ohio: Col Emerson Opdycke
	Artillery	8th Battery, Indiana Light: Cpt George Estep (w) 10th Battery, Indiana Light:[10] Lt William A. Naylor 6th Battery, Ohio Light: Cpt Cullen Bradley
Second Division MG John M. Palmer	1st Brigade BG Charles Cruft	31st Indiana: Col John T. Smith 1st Kentucky:[11] Ltc Alva R. Hadlock 2nd Kentucky: Col Thomas D. Sedgewick 90th Ohio: Col Charles H. Rippey
	2nd Brigade BG William Babcock Hazen	9th Indiana: Col Isaac C. B. Suman 6th Kentucky: Col George T. Shackelford (w), Ltc Richard Rockingham (k), Maj Richard T. Whitaker 41st Ohio: Col Aquila Wiley 124th Ohio: Col Oliver Hazard Payne (w), Maj James B. Hampson
	3rd Brigade Col William Grose	84th Illinois: Col Louis H. Waters 36th Indiana: Ltc Oliver H. P. Carey (w), Maj Gilbert Trusler 23rd Kentucky: Ltc James C. Foy 6th Ohio: Col Nicholas Longworth Anderson (w), Maj Samuel C. Erwin 24th Ohio: Col David J. Higgins
	Artillery Cpt William E. Standart	Battery B, 1st Ohio Light: Lt Norman A. Baldwin Battery F, 1st Ohio Light: Lt Giles J. Cockerill Battery H, 4th United States: Lt Harry C. Cushing Battery M, 4th United States: Lt Francis L. D. Russell
	Unattached	110th Illinois (battalion):[12] Ltc Ebenezer Hibbard Topping
Third Division BG Horatio P. Van Cleve	1st Brigade BG Samuel Beatty	79th Indiana: Col Frederick Knefler 9th Kentucky: Col George H. Cram 17th Kentucky: Col Alexander M. Stout 19th Ohio: Ltc Henry G. Stratton
	2nd Brigade Col George F. Dick	44th Indiana: Ltc Simeon C. Aldrich 86th Indiana: Maj Jacob C. Dick 13th Ohio: Ltc Elhannon M. Mast (k), Cpt Horatio G. Cosgrove 59th Ohio: Ltc Granville A. Frambes
	3rd Brigade Col Sidney M. Barnes	35th Indiana: Maj John P. Dufficy 8th Kentucky: Ltc James D. Mayhew (c), Maj John S. Clark 21st Kentucky:[13] Col Samuel Woodson Price 51st Ohio: Col Richard W. McClain (c), Ltc Charles H. Wood 99th Ohio: Col Peter T. Swaine
	Artillery	7th Battery, Indiana Light: Cpt George R. Swallow Battery B, Pennsylvania Light Artillery: Cpt Alanson J. Stevens (k), Lt Samuel M. McDowell 3d Battery, Wisconsin Light: Lt Cortland Livingston

Reserve Corps

MG Gordon Granger

Division	Brigade	Regiments and Others
First division BG James B. Steedman	1st Brigade BG Walter C. Whitaker	96th Illinois: Col Thomas E. Champion 115th Illinois: Col Jesse Hale Moore 84th Indiana: Col Nelson Trusler 22nd Michigan: Col Heber Le Favour (c), Ltc William Sanborn (w), Cpt Alonzo M. Keeler (c) 40th Ohio: Ltc William Jones 89th Ohio: Col Caleb H. Carlton (c), Cpt Isaac C. Nelson 18th Battery, Ohio Light Artillery: Cpt Charles C. Aleshire
First division BG James B. Steedman	2nd Brigade Col John G. Mitchell	78th Illinois: Ltc Carter Van Vleck (w), Lt George Green 98th Ohio: Cpt Moses J. Urquhart (w), Cpt Armstrong J. Thomas 113th Ohio: Ltc Darius B. Warner 121st Ohio: Ltc Henry B. Banning Battery M, 1st Illinois Light Artillery: Lt Thomas Burton
Second Division --	2nd Brigade Col Daniel McCook, Jr.	85th Illinois: Col Caleb J. Dilworth 86th Illinois: Ltc David W. Magee 125th Illinois: Col Oscar F. Harmon 52nd Ohio: Maj James T. Holmes 69th Ohio:[14] Ltc Joseph H. Brigham Battery I, 2nd Illinois Light Artillery: Cpt Charles M. Barnett

Cavalry Corps

BG Robert B. Mitchell

Division	Brigade	Regiments and Others
First Division Col Edward M. McCook	1st Brigade Col Archibald P. Campbell	2nd Michigan Cavalry: Maj Leonidas S. Scranton 9th Pennsylvania Cavalry: Ltc Roswell M. Russell 1st Tennessee Cavalry: Ltc James P. Brownlow
	2nd Brigade Col Daniel M. Ray	2nd Indiana Cavalry: Maj Joseph B. Presdee 4th Indiana Cavalry: Ltc John T. Deweese 2nd Tennessee Cavalry: Ltc William R. Cook 1st Wisconsin Cavalry: Col Oscar H. LaGrange Battery D, 1st Ohio Light Artillery (1 section): Lt Nathaniel M. Newell
	3rd Brigade Col Louis D. Watkins	4th Kentucky Cavalry: Col Wickliffe Cooper 5th Kentucky Cavalry: Ltc William T. Hoblitzell 6th Kentucky Cavalry: Maj Louis A. Gratz
Second Division BG George Crook	1st Brigade Col Robert H. G. Minty	3rd Indiana Cavalry (detachment): Ltc Robert Klein 4th Michigan Cavalry: Maj Horace Gray 7th Pennsylvania Cavalry: Ltc James J. Seibert 4th United States Cavalry: Cpt James B. Mcintyre
	2nd Brigade Col Eli Long	2nd Kentucky Cavalry: Col Thomas P. Nicholas 1st Ohio Cavalry: Ltc Valentine Cupp (mw), Maj Thomas J. Patten 3rd Ohio Cavalry: Ltc Charles B. Seidel 4th Ohio Cavalry: Ltc Oliver P. Robie
	Artillery	Chicago (Illinois) Board of Trade Battery: Cpt James H. Stokes

Notes

Multiple commander names indicate command succession of command during the battle or the campaign.
Official Records, Series I, Volume XXX, Part 1, pages 40-47
Not engaged; guarding trains and performing provost duty.
On September 20 the remnants of this battalion, 35 men, served attached to the 19th U.S. Infantry.
Not engaged; train guard.
Detached from its division and serving as mounted infantry.
Not engaged; guarding supply train.
Detached from its brigade and serving as mounted infantry.
Not engaged, detached to Chattanooga.
Stationed at Chattanooga, and not engaged.
Five companies detached as wagon guard.
Not engaged.
Stationed at Whiteside's, and not engaged.
Temporarily attached.

References

U.S. War Department, The War of the Rebellion: a Compilation of the Official Records of the Union and Confederate Armies, U.S. Government Printing Office, 1880–1901.
Civil War Home: The Chickamauga Campaign. Union Order of Battle
Union Chickamauga Order of Battle at Civil War Virtual Tours
Richardson, Maj. Robert D. (1989). ROSECRANS' STAFF AT CHICKAMAUGA: THE SIGNIFICANCE OF MAJOR GENERAL WILLIAM S. ROSECRANS' STAFF ON THE OUTCOME OF THE CHICKAMAUGA CAMPAIGN (PDF). Fort Leavenworth, Kansas.

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[1] Multiple commander names indicate command succession of command during the battle or the campaign.

[2] Official Records, Series I, Volume XXX, Part 1, pages 40-47

[3] Not engaged; guarding trains and performing provost duty.

[4] On September 20 the remnants of this battalion, 35 men, served attached to the 19th U.S. Infantry.

[5] Not engaged; train guard.

[6] Detached from its division and serving as mounted infantry.

[7] Not engaged; guarding supply train.

[8] Detached from its brigade and serving as mounted infantry.

[9] Not engaged, detached to Chattanooga.

[10] Stationed at Chattanooga, and not engaged.

[11] Five companies detached as wagon guard.

[12] Not engaged.

[13] Stationed at Whiteside's, and not engaged.

[14] Temporarily attached.