According to the Karteikarte the surname is written as Koßack.
Promotions:
September 1st, 1923: Gefreiter;
December 1st, 1923: Unteroffizier;
October 1st, 1924: Fähnrich;
October 1st, 1925: Oberfähnrich;
December 1st, 1925: Leutnant (106);
January 1st, 1929: Oberleutnant (3);
October 1st, 1934: Hauptmann (52);
December 1st, 1939: Major (105);
March 1st, 1942: Oberstleutnant (409);
August 8th, 1943: Oberst mit RDA vom 1-6-1943 (51a).
Career:
October 15th, 1935: Chef 8./Inf.Rgt. 24;
December 5th, 1939: Kdr. I./Inf.Rgt. 24;
January 9th, 1940: Führer-Reserve W.K. II;
January 10th, 1940: Kdr. III./Inf.Rgt.;
December 25th, 1941: Kdr. II./Inf.Rgt.167;
July 1st, 1942: Kdr. I./Inf.Rgt.306;
October 19th, 1942: Führer-Reserve H.Gr. Mitte;
November 12th, 1942: Kdr. Gren.Rgt. 471;
October 21st, 1943: Führer-Reserve OKH;
December 8th, 1943: Kdr. Gren.Rgt.1022;
February 10th, 1944: Kdr. Gren.Rgt.1051;
August 31st, 1944: mstFb 84. Inf.Div.(bis 6-10-1944)
January 15th, 1945: Führer-Reserve OKH;
April 5th, 1945: kdt.z. 18. Div.Fhr.Lehrgang.
Do you have more information about this person? Inform us!