Guderian with a Panzer IV

Generaloberst Heinz Guderian (Oberbefehlshaber Panzergruppe 2) standing beside a Panzerkampfwagen IV of Panzer-Regiment 35 / 4.Panzer-Division, 12 September 1941. The picture was taken in the Eastern Front during Unternehmen Barbarossa, German invasion of Soviet Union.

Source :
https://www.ebay.de/itm/385120762924?hash=item59aafc7c2c:g:9FoAAOSwhjljJXfT