Sky Trooper is a 1942 animated cartoon by Walt Disney Studios starring Donald Duck during the World War II years.

He throws it, and it catches Sergeant Black Pete's cap and brings it back to Donald, like a boomerang.

Donald is forced to peel tons more potatoes, but is promised the opportunity to fly after he cuts them all.

Donald makes his way back in, sticking the pin on the startled Sergeant, who falls all three stories.

The clip ends with the Sergeant and Donald, both with a cast on their leg and arm, respectively, and peeling potatoes.