The comment by 520 is pretty much spot on. In the event our office areas are attacked every single person in uniform is considered a rifleman, regardless of age gender or creed it is expected that you are to pick up a rifle and return fire as needed or assist with moving injured personnel to a safer location.

An example of medical qualification is wisdom teeth. A fun fact about the military I served with, every single person has their wisdom teeth pulled and gets a shop lecture on proper dental hygiene. The reason for this is so that we don’t have to send a team of 8-10 to return a person from the front due to wisdom teeth issues or hygiene issues causing health problems.