ITALERI 1/35 75 cm RSO with PAK40 RR Kit 355To better meet the logistical and transportation needs in the challenging environmental conditions of the Eastern Front, the Wehrmacht developed tracked tractors capable of towing various types of vehicles and transporting different loads, including ammunition and supplies. The official designation of this series of vehicles, which were highly versatile in operational use, was "Raupenschlepper Ost" (Crawler Tractor East). The RSO was predominantly