Doonesbury by Garry Trudeau for December 29, 1990
Officer: Evening, Sergeant! Sergeant: Evenin' sir. Officer: What's going on over there? Sergeant: It's just B.D., sir. He's tellin' old Vietnam war stories. Officer: Good! Should inspire the men! Soldier: You're kidding! You shot your own officers? B.D.: Just the dumb ones. Lieutenants, mostly.