Battle of Fort Donelson order of battle: Union

The following Union Army units and commanders fought in the Battle of Fort Donelson of the American Civil War. Order of battle compiled from the casualty returns, and the reports. The Confederate order of battle is listed separately.

Military Rank

 * BG = Brigadier General
 * Col = Colonel
 * Ltc = Lieutenant Colonel
 * Maj = Major
 * Cpt = Captain
 * Lt = 1st Lieutenant

Other

 * w = wounded
 * k = killed

District of Cairo
BG Ulysses S. Grant, Commanding
 * Chief of Staff: Col Joseph D. Webster
 * Chief of Engineers: Col James B. McPherson
 * Assistant Adjutant General: Cpt John A. Rawlins

Western Flotilla
Flag Officer Andrew H. Foote (w)

Rear Guard
These units were attached to the District of Cairo but were posted to guard duty and did not take part in the campaign against Fort Donelson.