Private Snafu was the U.S. Army’s worst soldier. He was sloppy, lazy and prone to shooting off his mouth to Nazi agents. And he was hugely popular with his fellow GIs.

Private Snafu was, of course, an animated cartoon character designed for the military recruits. He was an adorable dolt who sounded like Bugs Bunny and looked a bit like Elmer Fudd. And in every episode, he taught soldiers what not to do, from blabbing about troop movements to not taking malaria medication.

The idea for the series reportedly came from Frank Capra — the Oscar-winning director of It’s a Wonderful Life and Mr. Smith Goes to Washington and, during WWII, the chairman of the U.S. Army Air Force First Motion Picture Unit. He wanted to create a cartoon series for new recruits, many of whom were young, unworldly and in some cases illiterate. Capra gave Disney first shot at developing the idea but Warner Bros’ Leon Schlesinger, a man who was as famous for his hard-driving business acumen as he was for wearing excessive cologne, offered a bid that was 2/3rds below that of Disney.

The talent behind this series was impressive, featuring a veritable who’s who of non-Disney animating talent, including Chuck Jones, Bob Clampett, and Friz Freleng. Snafu was voiced by Mel Blanc, who famously did Bunny Bugs, Daffy Duck and later Marvin the Martian. And one of the main writers was none other than Theodor “Dr. Seuss” Geisel.