By early war standards, the Panzer II was totally outclassed, and so a decision was made to use the Panzer II Ausf. F chassis as a basis for a self-propelled tank destroyer. The resulting Marder II (Sd Kfz 131) mounted the effective 75mm PaK40/2 gun in a high superstructure. The Marder II appeared in Panzerjager detachments from 1942 onwards, and they were to serve on till the end of WWII.