Vicksburg Union order of battle
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. Army of the Tennessee. MG Ulysses S. Grant, Commanding General Staff: General Headquarters: IX Corps. MG John Parke XIII Corps. MG John A. McClernand MG Edward Ord Escort Pioneers XV Corps. MG William T. Sherman XVI Corps (detachment). MG Cadwallader C. Washburn XVII Corps. MG James B. McPherson Escort District of Northeast Louisiana. BG Elias S. Dennis Vicksburg