The Probert Encyclopaedia of Warfare

SNIPER

A sniper is an excellent shot armed with a high quality, accurate rifle and often special long-range ammunition. The job of a sniper is to kill selective targets at long range from a concealed position. The Confederate army of the American Civil War employed snipers, arming them with Whitworth .450 calibre rifles. A successful sniper must not only be a good shot. He must also be able to withstand long periods of solitude and sighting while remaining concealed.
Research Sniper