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<br>
<br>
General Staff:
General Headquarters:
IX Corps.
MG John Parke
XIII Corps.
MG John A. McClernand
<br>
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