U-71 was launched on 22 November 1940 and commissioned on 4 January 1941. U-72 served with 24th U-boat Flotilla (a training unit), and later with 21st U-boat Flotilla (also a training unit), from 2 July 1941 to 30 March 1945. U-72 was used throughout World War II as a training boat until it was damaged in a daylight American bombing raid on 30 March 1945. U-72 was scuttled on 2 May 1945.