good question.

Sorry for slow response, steam dont send alert of new thread. The motor teams placed in guardposts should work automatically, those only have gunner to use turret against enemy they spot. Certain vehicles seem to be more effective - tanks spot vehicle fast, but AA-tank seem to be very slow against choppers and planes. Changeing AI skills in game options should have effect on that. I have friendlies set 1.0, enemies 0.6.

I will check that the crew have also high skills set in the mission.