Notes: This is an M-4 Sherman tank with the turret removed and replaced with a raised superstructure. It is used for the evacuation and treatment of casualties under enemy fire. The Sherman in this role has extensive medical supplies, including the equivalent of 5 doctor's medical bags, a refrigerator with 5 units of plasma and whole blood, refills for individual medical kits for a platoon, an oxygen unit, and other such supplies. The engine is moved to the center of the vehicle, and the floor of the passenger compartment has a hatch so that the vehicle may drive over a victim lying on the ground and pick him up. There is a hatch on the front deck for the driver, hatches on the roof of the passenger compartment, and a large door on the rear of the hull.