Panzer IIs in the Battle of Warsaw

While infantrymen shelter in the lee of some buildings, a pair of Panzerkampfwagen II (they are either Ausf.As or Bs) attempt to clear the way in Warsaw during the Polish Campaign of September 1939. Both vehicles have early features such as split hatches on the turret roof, rounded bow, idler wheels with spokes and no Notek black-out head-lamp. The near panzer has a large white balkenkreuz national insignia on the turret side as well as a white "R03" tactical number, indicating that it is from a Panzer-Regiment's command element. The numbers and national insignia are toned down with what appears to be mud, which has also softened the edges of the characters. These panzers would have been finished in the two-tone system of dunkelgrau Nr.46 base with a dunkelbraun Nr.45 overspray.

Source :
Book "Panzer Vor: German Armor At War 1939-45" by Frank V. De Sisto