After the Fall of France, due to the poor cross-country performance, some older Panzerkampfwagen II tanks were taken out of service, and an improved and modified version replaced them armed with newer 20mm KwK 38 L/55 cannon. But from then on the Panzerkampfwagen II tanks was phased out and the remaining chassis were used as a base for Marder II (Sd.Kfz.131) tank destroyers and Wespe (Sd.Kfz.124) self-propelled howitzers.