Haven't played for awhile and just tried out a user mission. Again my halftracks seemed to enjoy getting into a mess and seemingly incapable of moving around each other. At times you have to try and manually sort the mess out giving some reverse orders to then ease up the jam. Also issue of vehicles rolling over into gullies etc..drivers need to be shot on the spot.
Please put screenshot (s) with the situation and orders that you gave (with modifiers)