In this 1944 photo, colorized by Marina Amaral, US Army troops examine a one-man submarine that washed up on Anzio beachhead in Italy.
According to The National World War II Museum, the submarine was converted from a torpedo, since the warhead chamber was removed and replaced with a cockpit.
US troops captured the 17-year-old Nazi pilot when the beached unterseeboot was found in April 1944.
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