WW2 was (in most part) motorised. Motorised, because that poor, bloody infantry could at last ride between the battles on someone's else back (or, in this case, something's else
). So how about all those Fiats, GAZes, Isuzus, Lancias, ZiSes - to name a few? Tank company needs dozen of tanks, one-two tank tows and at least the same number of wheeled vehicles to service all that armoured force - not mentioning the infantry, command, security or any of other aspects of WW2 warfare.
Moar trucks!