Siege of Vicksburg order of battle: Union

The following Union Army units and commanders fought in the Siege of Vicksburg of the American Civil War. The Confederate order of battle is listed separately. Order of battle compiled from the army organization during the campaign.

Military rank

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

Other

 * w = wounded
 * mw = mortally wounded
 * k = killed

Army of the Tennessee
MG Ulysses S. Grant, Commanding General Staff:
 * Acting Inspector General: BG Jeremiah C. Sullivan
 * Chief of Transportation: Col Joseph D. Webster
 * Chief of Staff: Ltc John A. Rawlins

General Headquarters:
 * Escort: 4th Illinois Cavalry, Company A: Cpt Embury D. Osband
 * Engineers: 1st Battalion, Engineer Regiment of the West: Maj William Tweeddale
 * Mississippi Marine Brigade: BG Alfred W. Ellet
 * Mississippi Ram Fleet: Col Charles Rivers Ellet
 * 1st Battalion Infantry: Ltc George E. Currie
 * 1st Battalion Cavalry: Major James M. Hubbard
 * Artillery Battery: Cpt Daniel Walling

IX Corps
MG John Parke

XIII Corps
MG John A. McClernand MG Edward Ord

Escort Pioneers
 * 3rd Illinois Cavalry, Company L: Cpt David R. Sparks
 * Kentucky Engineers (Independent Company): Cpt William F. Patterson

XV Corps
MG William T. Sherman


 * Chief of Staff: Ltc John Henry Hammond
 * Chief of Artillery: Maj Ezra Taylor

XVI Corps (detachment)
MG Cadwallader C. Washburn

XVII Corps
MG James B. McPherson

Escort
 * 4th Company Ohio Cavalry: Cpt John S. Foster

District of Northeast Louisiana
BG Elias S. Dennis