S2, E28: After realizing that his father was in the war with President Eisenhower, Beaver brags about his father to all of his classmates the next day. He says he will bring in some mementos to show the kids who don't believe him, but when he goes to look for something, he learns that his father was an engineer who built bases and didn't fight during the war. Beaver still thinks his dad is a hero anyway.