M*A*S*H - Season 11 Episode 14 Goodbye, Farewell, and Amen.
Overview: A wounded GI learns a painful lesson when he forms a recovery room friendship with the enemy soldier he's critically wounded. Soldier: "My boots. All he wanted was my lousy boots. His feet were freezing. I'd have done the same thing. He was just a guy like me, and I shot him. I killed him, for a pair of boots. How can I ever look at a pair of shoes again without thinking of him?"