sentences:  Buchheim was a "Sonderführer" in a propaganda unit of the "Kriegsmarine" in the Second World War, writing as a war correspondent about his experiences on minesweepers, destroyers and submarines.He also made drawings and took photographs.As a "Leutnant zur See" in the autumn of 1941, Buchheim joined "Kapitänleutnant" Heinrich Lehmann-Willenbrock and the crew of on her seventh patrol in the Battle of the Atlantic.