In what year was the man under whose command the 1st U-boat Flotilla was founded born?
1st U-boat Flotilla The 1st U-boat flotilla (German "1. Unterseebootsflottille") also known as the Weddigen flotilla, was the first operational U-boat unit in Nazi Germany's "Kriegsmarine" (navy). Founded on 27 September 1935 under the command of "Fregattenkapitän" Karl Dönitz, it was named in honor of "Kapitänleutnant" Otto Weddigen. Weddigen, a U-boat commander during World War I, died on 18 March 1915 after his submarine "U-29" was rammed by the British battleship HMS "Dreadnought" in the North Sea.
Heinrich Bleichrodt Heinrich Bleichrodt (21 October 1909 – 9 January 1977) was one of the most successful German U-boat commanders of the Second World War. From October 1939 until retiring from front line service in December 1943, he was credited with sinking 25 ships for a total of  gross register tons (GRT) . For this he received the Knight's Cross of the Iron Cross with Oak Leaves, among other commendations. He earned the nickname "Ajax" during his time with the U-boats.