Battle of Wilson's Creek order of battle: Union

The following Union Army units and commanders fought in the Battle of Wilson's Creek of the American Civil War, fought on August 10, 1861, near Springfield, Missouri. The Confederate order of battle is shown separately.

Military rank

 * BG = Brigadier General
 * Col = Colonel
 * Ltc = Lieutenant Colonel
 * Maj = Major
 * Cpt = Captain
 * Lt = Lieutenant
 * 2Lt = 2nd Lieutenant

Other

 * w = wounded
 * k = killed

Army of the West
BG Nathaniel Lyon (k) Maj Samuel D. Sturgis

Staff
 * Asst. Inspector General: BG Thomas W. Sweeny
 * Chief of Staff: Maj. John M. Schofield