When you are a combat soldier, you are forced to depend on many things beyond your control. You accept that the artillery folks are well trained and accurate, you believe the Huey’s will arrive for extraction, you have some confidence that the jets will drop their bombs where they aim and not on you or your unit, you build a bond with your fellow soldiers that they will protect you flank and rear.
However, the one thing you trust above all others is your unit MEDIC. He carries his hospital on his back or in a pack. Sometimes he carries a weapon and sometimes he doesn’t. He slugs it out with you and the unit enduring the same danger and challenges of an infantry soldier.