WW2 Uboat commanders inc Donitz multiple signed RAF St Mawgan cover. Signed by Admiral Karl Donitz, Kapt Hans George Hess U995. Kapt Ernst Megersen U101. In January 1943, Dönitz achieved the rank of Großadmiral (grand admiral) and replaced Grand Admiral Erich Raeder as Commander-in-Chief of the Navy. Dönitz was the main enemy of Allied naval forces in the Battle of the Atlantic. From 1939 to 1943 the U-boats fought effectively but lost the initiative from May 1943. Dönitz ordered his submarines into battle until 1945 to relieve the pressure on other branches of the Wehrmacht (armed forces). 648 U-boats were lost-429 with no survivors. Furthermore, of these, 215 were lost on their first patrol. Around 30, 000 of the 40, 000 men who served in U-boats perished. Good condition. All autographs are genuine hand signed and come with a Certificate of Authenticity. We combine postage on multiple winning lots and can ship worldwide. UK postage from £5.99, EU from £7.99, Rest of World from £10.