I'm writing a British character who was a doctor in the Royal Army Medical Corps. According to Wikipedia, doctors can carry weapons and such, but they can't use them unless it's for self defense or in defense of their sick/wounded charges.
But, I came across a news article where a young doctor over in Afghanistan says that, once he's out on patrol with the regular infantry, he functions as an infantry soldier as well as a doctor.
So what does that mean? Can he engage with enemies, the same as the other, regular soldiers, or does he have to basically hang out and wait til the shooting stops?