We can command to switch weapon, type of this weapon, speed, target, but we cannot give a order to your AI crew to launch countermeasures (smoke, flares, etc. 'C' -key by default)

In most cases, CM are released by the commander, when the player is in the driver's or gonner's seat, he can give all possible commands to other crew members
But does not to use CM, it would be nice to expand the command of vehicles with an AI with function to use a command to release CM