Storming Vicksburg

The most overlooked phase of the Union campaign to capture Vicksburg, Mississippi, was the time period from May 18 to May 25, 1863, when Ulysses S. Grant closed in on the city and attempted to storm its defenses. Federal forces mounted a limited attack on May 19 and failed to break through Confederate lines. After two days of preparation, Grant's forces mounted a much larger assault. Although the Army of the Tennessee had defeated Confederates under John C. Pemberton at Champion Hill on May 16 and Big Black River on May 17, the defenders yet again repelled Grant's May 22 attack. The Gibraltar of the Confederacy would not fall until a six-week siege ended with Confederate surrender on July 4.