Is It Illegal To Shoot Medics. It only covers unarmed medics, shooting one who is armed is technically legal in the rules of war. However, if they pick up and use a weapon, they make themselves unlawful combatants and they lose their protected status.

If you knowingly engage an ambulance, hospital or a medic who is marked as such and treating wounded then yes, it is a war crime. No soldier, sailor, or airman would be in a position to plead ignorance of the law. Under the basic rules of the geneva convention, medical personnel are 'protected' but there is a caveat for this protection.