McDowell Union order of battle

The following United States Army units and commanders fought in the Battle of McDowell of the American Civil War. The Confederate order of battle is listed separately.

Military rank

 * MG = Major General
 * BG = Brigadier General
 * Col = Colonel
 * Ltc = Lieutenant Colonel
 * Maj = Major
 * Cpt = Captain

Mountain Department
MG John C. Frémont (not present)

Union Forces Around McDowell
BG Robert H. Milroy BG Robert C. Schenck