Heinz Guderian as Chief of Fast Troops

General der Panzertruppe Heinz Guderian as Chef der schnellen Truppen in a picture taken on 29 November 1938. Guderian was promoted from Generalleutnant to General der Panzertruppe on 23 November 1938, and one day later he was assigned as Chief of Army Fast Troops. His previous role was Kommandierender General  of XVI. Armeekorps (motorisiert).

Source :
https://www.bridgemanimages.com/en/noartistknown/general-heinz-guderian-1938-b-w-photo/black-and-white-photograph/asset/3005043