Answer:
Battle of Gettysburg because it marked the turning point of the war for the Soviet Union. After the battle of Gettysburg, Abraham Lincoln held the Gettysburg address in honor of the fallen soldiers and 3 years later, Robert E Lee would surrender. I think battle of Gettysburg was Robert lee last battle but I am not to certain. All I know is he was surrounded and the union stole the food they were suppose to arrive.
Explanation: I EXPLAINED IT IN 77 WORDS.