The following Union Army units and commanders fought in the Battle of Prairie Grove of the American Civil War on December 7, 1862, in Washington County, Arkansas. The Confederate order of battle is listed separately.
MG James G. Blunt9,216 men on the battlefield
1st Division
BG James G. Blunt 3,144
BG Frederick Salomon 752
Col William A. Weer 902
Col William F. Cloud 1490
2nd Division
Col Daniel Huston, Jr. 2118
Col John G. Clark 938
Col William Dye 1175
3rd Division
BG Francis J. Herron 3950
Ltc Henry Bertram 1765
Col William W. Orme 1600
Unattached 585