The acronym RSO stands for Raupenschlepper Ost, which translates as ‘Caterpillar Tractor East’. The terrible muddy and icy conditions experienced on the Eastern Front convinced Germany of the need for a highly mobile, tracked vehicle.

Steyr proposed the RSO and it immediately became a popular vehicle thanks to its mobility and reliability. In all, about 23,000 RSO vehicles were produced by a range of manufacturers.

The original version had a pressed-steel cab and a typical truck-style cargo bed at the rear. It was powered by a Steyr 85hp V8 engine that offered a top speed of 30km/h. This kit depicts the standard RSO/01, the type with rounded steel cab being the best known of all the versions used by Germany.