People forget that about the American Civil War, quite often. It's estimated that the Normandy landings on D-Day had 14,000-19,000 casualties total (all sides)

People forget that about the American Civil War, quite often. It's estimated that the Normandy landings on D-Day had 14,000-19,000 casualties total (all sides). The Battle of Antietam had 22,000 casualties in a single day. Cold Harbor may have had up to 7,000 in a matter of minutes. At Gettysburg, Pickett's division suffered around 60% casualties in their one charge, including a 100% casualty rate among regimental and brigade commanders, prompting his famous comment to Lee (on being told to prepare his division for a possible Union counterattack) "General Lee, I have no division". It was a relentlessly and almost unbelievably bloody conflict, and yet both sides found the will to keep it going for four years. What sticks out to me is Grant's comment after the first day at Shiloh (which had been close to a massacre of the Union forces) in response to Sherman, who said to him "Well, Grant, we've had the Devil's own day, haven't we?" Grant simply said "Yes. Lick 'em tomorrow, though." And he did. In the end it was that stubbornness and willingness to keep pressing on in spite of the horrific casualties that won the war.