An expensive perk version of the M3 loaded with 10 demolition troops. You launch the troops and they choose different targets (even enemy vehicles) into their visual area. Then these troops advance towards their targets and once close enough they plant an explosive charge and proceed to return to the M3. Each troop reentering the M3 will detonate its charge (equivalent to 500 lb bomb) and will be ready to be launched again. If they dont find any target but enemy map room is close enough, then they act as normal troops and proceed to take the field.
Putting one of these into a deacked field would be devastating.