Nuts & Bolts Vol. 46: Sd.Kfz.166 Sturmpanzer IV

Regarding our volumes 19, 22, 26 and 43 there is one important vehicle missing sd.Kfz. 166 15cm SIG33 on Panzer IV “Brummbär.” During the defensive battles on the eastern front, the need for a successor vehicle on a Kampfwagen IV chassis became