Larger diameter idler wheels were introduced at the same time

Length: 151mm

and in its place there is a twin-turbo V6

This new 'version 2' is smaller than the original

Tamiya - 1/35 German Sturmgeschutz IV Plastic Model Kit ASC30125 Larger diameter idler wheels wereThe Sturmgeschuetz (storm or assault gun) was developed in the 1936 39 period to provide armoured support for the infantry. This came about largely because the new tanks being produced were destined for the panzer (armoured) divisions. In a battlefield situation there was no guarantee that tanks from an armoured division would be available to support the infantry. Thus the idea of the assault gun regiment organic to an infantry division came about.