04/07/1862
At Pittsburg Landing, Union reinforcements turn the tide on the second day of the Battle of Shiloh
05/01/1863
The Army of the Tennessee secures its beachhead across the Mississippi at the Battle of Port Gibson
05/16/1863
In Mississippi, the Army of the Tennessee wins a pivotal battle at Champion Hill and moves on to Vicksburg
05/17/1863
At the Big Black River Bridge, Union troops sweep aside a blocking force covering the Confederate retreat to Vicksburg
05/18/1863
On the Mississippi, the Union's Army of the Tennessee completely surrounds Vicksburg
05/19/1863
The Union's Army of the Tennessee attempts the storming of Vicksburg but is beaten back
05/22/1863
Second Union attempt to take Vicksburg by infantry assault ends in bloody failure with 500 dead
05/25/1863
After twice failing to storm the city, Union General Grant orders a siege at Vicksburg, Mississippi
05/26/1863
- 07/03/1863
In Mississippi, the Siege of Vicksburg continues
