Günther Seibicke entered the Kriegsmarine in 1932.
00.11.1938-00.03.1941: Kommandeur, Minensucher 'M-4', 1. Minensuchflotille
00.04.1941-00.09.1941: U-Fahrausbildungslehrgang
27.09.1941-26.05.1943: Kommandant, "U 436"
26.05.1943: KIA when U-436 was sunk West of Cape Ortegal at 43.49N / 15.56W by H.M.S. 'Test' and H.M.S. 'Hyderabad' escortships of convoy 'AHL47'
At that moment he was on his eighth patrols and had sunk seven ships with a total of 36.499BRT
Promotions:
1 Apr 1932 Offiziersanwärter
4 Nov 1932 Seekadett
1 Jan 1934 Fähnrich zur See
1 Sep 1935 Oberfähnrich zur See
1 Jan 1936 Leutnant zur See
1 Oct 1937 Oberleutnant zur See
1 Apr 1940 Kapitänleutnant
1 Jun 1943 Korvettenkapitän (posthumous)
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