In what year was the man under whose command the 1st U-boat Flotilla was founded born?
Karl Dönitz Karl Dönitz (sometimes spelt Doenitz) (] ; 16 September 1891 – 24 December 1980) was a German admiral who played a major role in the naval history of World War II. Dönitz briefly succeeded Adolf Hitler as the head of state of Germany.
Franz Sensfuß Franz Heinrich Otto Sensfuß (21 June 1891 – 11 March 1976) was a German general during World War II. He was a recipient of the Knight's Cross of the Iron Cross on Nazi Germany.