Snipers pick out crucial enemy units, typically gun crew, engineers, guards on watch, or commanders, and slay them from afar. They require time to get into position and get ready, but once in a hidden, fortified place, they are unstoppable. Usually they work alone, in stealth and secrecy. Expert gunmen all. They are like wasps, that sting and dart away and sting again, except that they always hit vital spots. Given time, they can cause the collapse of even the mightiest army.