 The original Union Army expedition to control the Cumberland and Tennessee Rivers was under the overall command Major General Henry W. Halleck although Brigadier General Ulysses S. Grant commanded the forces in the field.Flag officer Andrew H. Foote commanded the Navy's squadrons.The Vicksburg and Port Hudson campaigns were commanded by Major Generals Grant and Nathaniel P. Banks, respectively while the Mississippi River Squadron was commanded by then Rear Admiral David Farragut from the south and Flag Officer David Dixon Porter from the north.