[Imp]

Its the way it works, gun or missile rounds often pass straight through soft targets doing little damage unless hits a strong point like the chasis thats why you fire at them with your tanks MGs unless there are several together when a HE round could damage several at once. If the SAMs a soft target to the paveway will not do much so attack them with arty. Alternativly why not buy deadicated SAM planes SEAD will target them directly as thats there role if have radar or planes with bombs though Skirmishers suggestion is the most logical, mind you if you want to use them like that just exploit it, 3 trucks is 2 less squads & an easy kill thanks for the points.