Leave It to Beaver (1957)

Season 2: Episode 28

Beaver discovers that Ward was in WWII and brags to his classmates that Ward was a war hero. As usual, his classmates don't believe him and Beaver promises to bring in some mementos to prove it. At home, Beaver discovers that Ward was an engineer in the war and didn't actually fight in combat, leaving Beaver to take drastic measures so as not to look like a fool in front of his classmates.