A fully-trained sniper can be defined as a soldier who is trained to locate an enemy, however well-hidden, who can stalk or lie in wait for him unseen, and who is at the same time an expert shot with the rifle. His objective is to kill with one round. He is the big game hunter of the battlefield, and must combine the art of the hunter with the wiles of the poacher, the skill of a Bisley shot with the grim determination to seek out his enemy. The sniper must be trained, not only in rifle marksmanship but also to a very high degree in fieldcraft. Without great skill as an observer he will seldom be able to find suitable targets, and without a comprehensive knowledge of fieldcraft he will rarely get to a fire position within shot of his quarry." British 1951 Infantry Training Manual
The sniper qualification is a specialist position within the military occupation of Infantryman. To qualify for this specialty training, the soldier must meet several prerequisites first. The soldier must first be a qualified infantryman and have previously completed the basic reconnaissance (recce) course. He must be qualified Marksman and be assigned as a recce patrolman in a Battalion Recce Platoon. He must have passed his physical fitness test and be recommended by his Commanding Officer.
Much of the modern day sniper techniques are derived from the tradition of the Scots "ghillie" (professional deer stalker), hence today's standard sniper accessory the "ghillie suit". The old ghillie's maxim... "Stalk as close as ye kin, laddie - then git ten paces closer!"