"The astonishing story of the longest and most decisive military campaign of the Civil War in Vicksburg, Mississippi, which opened the Mississippi River, split the Confederacy, freed tens of thousands of slaves, and made Ulysses S. Grant the most important general of the war. Vicksburg, Mississippi, was the last stronghold of the Confederacy on the Mississippi River. It prevented the Union from using the river for shipping between the Union-controlled...