There are three classes of prime movers included here:*
*
SdKfz 7:  Medium*
SdKfz 8:  Heavy*
SdKfz 10: Light*
*
The SdKfz 10 is designed to be used only with light AA (3.7cm or less) and AT guns (7.6cm or less). The 10 can also be used to tow light infantry guns and light howitzers.*
*
The SdKfz 7 and 8 can be used to haul any gun depicted in the game at this time, though the 8 has more capacity.