AI anti-tank soldier, have a lot of difficulties to engage a enemy car! If the team leader is an AI or if it is the player, the problem is the same.
There are severable problems: You cannot ask the AI to engage through [unit-number]-2-2, because he doesn't answer and/or move, so you have to face the vehicle, and clic engage directly!
And secondly, when he accept to engage, he has a lot of difficulties to fire. First he'll fire with his light weapon and get killed often!