4 April 1934: Gefreiter[6] 1 October 1939: Feldwebel[6] 1 August 1940: Leutnant (Second Lieutenant), with a rank age dated 1 May 1940[6] 14 August 1941: Oberleutnant (First Lieutenant), with a rank age dated 1 August 1941[121] 1 December 1941: Hauptmann (Captain), with a rank age dated 1 September 1941[122] 1 March 1943: Major (Major), with a rank age dated 1 September 1942[123] 1 January 1945: Oberstleutnant (Lieutenant Colonel)[124]