01/04/1930 Oberheizer
01/11/1932 Maschinenmaat
01/11/1934 Obermaschinenmaat
01/03/1937 Obermaschinist
01/03/1940 Stabsobermaschinist
08/10/1940 Oberfähnrich (Ing.)
01/01/1941 Leutnant (Ing.) (-35-)
01/11/1941 Oberleutnant (Ing.) (-50-)
01/10/1944 Kapitänleutnant (Ing.)
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