The sniper must know how to render medical aid to his partner (spotting the wounded place on the body of the partner and putting a tourniquet) because often, there are just two of them in the firing position.
When the tourniquet is put, the sniper has to evacuate his wounded partner from the battlefield. He should be very careful and not to reveal himself while doing it.
Snipers are considered the elite troops in the army and it is very important that those who train to be a sniper were self-interested, apart from disciplined and skilled. Best snipers are decorated with a chevron, a pride of each sniper.