Been looking at Italeri's old Opel Maultier and Zvezda's newer L4500R Maultier, but I also remember a smaller fully wee tractor, by Italeri and later Testors I think, can't remember the make though, was it Saurer? Think that it was two version made in WWII, first with the more rounded front and later a more angular one...
Steyr I would think old chap, for Ost Front. Italeri did one, which of course used to be Esci, and although their armour/vehicle kits seem rather 'fragile' at first view, they make into very nice models.
Yep, along with other stuff. Normally known as Ostschlepper Steyr, IIRC. It was based on the Steyr light truck, the latter being used also in the West.