The Great Battle of Gettysburg

Robert E. Lee’s smashing victory against Major General Joseph Hooker’s Army of the Potomac at Chancellorsville in May 1863 provided the Confederacy with three strategic options: shift resources from Virginia to Mississippi in order to revive Vicksburg, the Rebel redoubt on the Mississippi River; reinforce Braxton Bragg’s Army of Tennessee, enabling him to reprise his 1862 invasion of Kentucky and maneuver the Union Army of the Cumberland under William Rosecrans out of its position in central Tennessee; or invade Pennsylvania.