Vinnie
See Dummies in the index
97a RSO:
Raupenschlepper Ost "Caterpillar Tractor East" was a fully tracked, lightweight vehicle. It was conceived in response to the poor performance of wheeled and half-tracked vehicles in the mud and snow during the Wehrmacht's first autumn and winter on the East Front.
Amoung the variants of this vehicle built were the basic cargo carrier, and a self-propelled antitank vehicle armed with a PaK 40 gun (German Vehicle Note 44b), and one mounting the FlaK 38 gun (German Vehicle Note 93a). All shared the same chassis. Some 23,000 of these were built during the course of the war.
See also German Vehicle Note N, BG.