Battle of Wauhatchie order of battle: Union

The following Union Army units and commanders fought in the Battle of Wauhatchie of the American Civil War. The Confederate order of battle is listed separately. Order of battle compiled from the casualty returns^[1] and the reports.^[2]

Abbreviations used

Division	Brigade	Regiments and Others
Second Division BG Adolph von Steinwehr	1st Brigade^[3] Col Adolphus Buschbeck	134th New York 154th New York 27th Pennsylvania 73rd Pennsylvania
Second Division BG Adolph von Steinwehr	2nd Brigade Col Orland Smith	33rd Massachusetts: Col Adin B. Underwood (w), Ltc Godfrey Rider Jr. 136th New York: Col James Wood 55th Ohio^[4] 73rd Ohio: Maj Samuel H. Hurst
Third Division MG Carl Schurz	1st Brigade BG Hector Tyndale	101st Illinois 45th New York 143rd New York 61st Ohio 82nd Ohio
	2nd Brigade Col Wlodzimierz Krzyzanowski	58th New York 119th New York 141st New York 26th Wisconsin
	3rd Brigade^[5] Col Friedrich Hecker	80th Illinois (6 companies) 68th New York 75th Pennsylvania
	Cavalry	1st Alabama (part of one company)^[6] 5th Tennessee, Company G

Division	Brigade	Regiments and Others
Second Division^[7] BG John W. Geary	2nd Brigade Col George A. Cobham, Jr.	29th Pennsylvania: Col William Rickards, Jr., Ltc Samuel M. Zulick^[8] 109th Pennsylvania: Cpt Frederick L. Gimber 111th Pennsylvania: Ltc Thomas M. Walker (w), Maj John A. Boyle (k)
Second Division^[7] BG John W. Geary	3rd Brigade^[9] BG George S. Greene (w) Col David Ireland	78th New York: Ltc Herbert von Hammerstein 137th New York: Col David Ireland, Ltc Koert S. Van Voorhees (w), Cpt Milo B. Eldredge 149th New York: Ltc Charles B. Randall
	Artillery Brigade Maj John A. Reynolds^[10]	Battery E, Pennsylvania Light Artillery (2 sections): Cpt Charles A. Atwell (mw), Lt Edward R. Geary (mw)

^ Official Records, Series I, Volume XXXI, Part 1, pages 74-76
^ Official Records, Series I, Volume XXXI, Part 1, pages 952-953
^ In reserve
^ On picket duty
^ 82nd Illinois attached to the 3rd Brigade on October 21, 1863 (see: Itinerary 1st Brigade, Third Division, XI Corps), but was not mentioned in Schurz's report
^ See: Hooker's and Howard's reports
^ 1st Brigade (5th, 7th, 29th and 66th Ohio and 28th and 147th Pennsylvania) not present
^ On guard duty (see: Geary's, Cobham's and Rickards reports)
^ 60th New York detached at Whiteside Pike (see: Geary's and Ireland's reports); 102nd New York also belonged to this Brigade, but acted as escort to the division ambulance train, en route from Murfreesborough to Bridgeport (see: Geary's report and Itinerary 3rd Brigade, Second Division, XII Corps)
^ The command of Battery E, Pennsylvania Light Artillery devolved on Reynolds as the only Artillery Officer present after Atwell and Geary were mortally wounded (see: Geary's and Reynolds' reports)