http://www.goforbroke.org/history/hi..._champagne.asp
One day, a Japanese-American soldier was on guard duty in the hills overlooking the harbor at Menton. He spotted what looked like a big fish stuck near a sandbar. He called down, and some other Nisei investigated. Everyone was hoping for some sashimi (raw fish). Instead, the “big fish” turned out to be a one-man German submarine. The driver had mistaken Menton for a harbor five miles away in Italy. The driver motioned for the Japanese American soldier to push him off the sandbar. The Nisei pointed his Tommy gun and motioned for the German to surrender. Eventually the 232nd Combat Engineer Company pulled the sub ashore and sent it to the Navy. It was the only time in military history that the Navy received a captured submarine from the Army.(?)