 Pivotal Civil War battle. It didn't seal the fate of the Confederacy, but this was considered by a lot of people to be the high-water mark of the Confederacy. It was certainly their last invasion of the North. They just never again could muster the strength to get there again. You combine this with what was going on in the West at Vicksburg, and it was kind of the one-two punch, like the end was starting to show.