From the release:
One of the most widely used German tank destroyers is now available – the Marder III Ausf. M.
The Marder III was a series of German tank destroyers built on the chassis of the Czech designed Panzer 38(t). Produced from 1942 to 1944, they served on all fronts until the end of the war.
Even in the early stages of Operation Barbarossa, the Wehrmacht was aware of the need to field a more mobile and more potent anti-tank weapon. This need was further highlighted when, in June 1941, Geran anti-tank shells failed to penetrate the armour of new Soviet tanks such as the T-34 and KV-1.