““Thus, the day ended in a tactical stalemate, with the Union suffering nearly 12,500 casualties (including over 2,000 dead) and the Confederates suffering over 10,000 casualties (including over 1,500 dead). Nearly 1/4th of the Army of the Potomac had been injured, captured or killed, and the same could be said for nearly 1/3rd of Lee’s Army of Northern Virginia. It was the deadliest and bloodiest day in American history. On””