German Photographer (20th Century). Medium: black and white photograph. Date: 20th Century. Karl Dioenitz (1891-1980); Head of the German U-Boat Service 1939-1943; Commander of the German Navy 1943-45; Hitler's successor as Head of State, 30 April 1945; Provenance: Private Collection / Peter Newark Military Pictures. Photographic rights held by The Bridgeman Art Library.