A Civil War battle in Mississippi that resulted in a decisive Union victory.
What was it?
A battle that took place in Mississippi between Union and Confederate soldiers between May to July in 1863. Grant had 77,000 men while the Confederates had 33,000.
What did it do?
Grant marched his men across the Mississippi and at the same time pushed the Confederates back into a defensive position where they lost.
The Confederate surrender at Vicksburg is sometimes considered, when combined with Gen. Robert E. Lee's defeat at Gettysburg the previous day, the turning point of the war. The Union finally gained control of the entire Mississippi River.
Anything else--supplemental info, memory pegs, etc.