Battle of Mill Springs order of battle: Union

The following Union Army units and commanders fought in the Battle of Mill Springs during the American Civil War on January 19, 1862, near present-day Nancy, Kentucky. The Confederate order of battle is listed separately.

Abbreviations used

Brigade	Regiments and Other
Second Brigade Col Mahlon Dickerson Manson, acting BG	10th Indiana: Ltc William Coalbaugh Kise 4th Kentucky Infantry: Col Speed Smith Fry (w)
Third Brigade Col Robert Latimer McCook (w), acting BG	2nd Minnesota Infantry (9 companies, B—K): Col Horatio Phillips Van Cleve 9th Ohio Infantry: Maj Gustave Kammerling
Twelfth Brigade Col Samuel Perry Carter, acting BG	12th Kentucky Infantry: Col William Anderson Hoskins 1st Tennessee Infantry: Col Robert King Bird 2nd Tennessee Infantry: Col James Patton Taylor Carter
Cavalry	1st Kentucky Cavalry (companies A, B, C and H): Col Frank Lane Wolford
Artillery	Battery B, 1st Ohio Artillery: Cpt William Edward Standart Battery C, 1st Ohio Artillery: Cpt Dennis Kenny Jr. 9th Ohio Battery: Cpt Henry Shepard Wetmore

1st Michigan Engineers & Mechanics, Companies D, F, G: Ltc Kinsman Adenis Hunton (camp guard)
2nd Minnesota Infantry, Company A: Cpt Judson Bishop (on picket duty; engaged in pursuit to Beech Grove)
10th Kentucky Infantry: Col John Marshall Harlan (engaged in pursuit to Beech Grove)
14th Ohio Infantry: Col James Blair Steedman (engaged in pursuit to Beech Grove)
17th Ohio Infantry: Col John McNeill Connell (advanced to Beech Grove during night of January 19)
31st Ohio Infantry: Col Moses Bascom Walker (advanced to Beech Grove during night of January 19)
35th Ohio Infantry: Col Ferdinand Van Derveer (advanced to Beech Grove during night of January 19)
38th Ohio Infantry: Col Edwin D. Bradley (regiment remained at Somerset, Company A under Cpt Charles Greenwood served as camp guard on the 19th at Logan's Cross Roads)
18th U.S. Infantry: Col Henry Beebee Carrington (absent), Ltc Oliver Lathrop Shepherd (marching east towards Logan's Cross Roads)
1st Kentucky Light Artillery, Battery B: Cpt John M. Hewitt (advanced to Beech Grove during night of January 19)

Battle, J. H., et al. Kentucky: A History of the State (Louisville, KY: F. A. Battey, 1885).
The Official Records of the War of the Rebellion, Ser. I, Vol. 7, pp. 79–116; 824.
Ohio Roster Commission. Official Roster of the Soldiers of the State of Ohio in the War on the Rebellion, 1861–1865, Compiled Under the Direction of the Roster Commission 12 vol. (Akron, OH: Werner Co.), 1886–1895.
Reid, Whitelaw. Ohio in the War: Her Statesmen, Her Generals, and Soldiers. (Cincinnati, OH: Moore, Wilstach, & Baldwin), 1868.