Tac Med was training for Medics for possible combat missions. To my knowledge it is done anymore. An ACP is treated no differently than an PCP, however you may be called upon to give a lecture more often and or be nominated for operations more often. One of the above statements was correct, indicating that Medics only belongs to CMP, not the army, navy or airforce, You can be attached to them for exercises etc but do not fall under them directly.. Medics can apply for the special forces and conduct support roles for combat missions. The advice given above was good advice!