The First World War was also the FIRST SNIPER WAR. It was on its fronts that sniping first became widespread, and it was here that its basic principles and specific techniques were determined (for example, sniper pairs - “shooter-fighter” and observer-target designator). The Germans are rightfully considered the pioneers of sniper business, having already unleashed real “sniper terror” in the fall of 1914, but the British quickly responded to the threat by creating their own sniper school and ultimately completely suppressing enemy shooters. The Russian infantry also suffered heavy losses from sniper fire. “I remember well what a difficult atmosphere the German snipers created in the regiments. They literally did not allow half of his head to be shown from behind the parapet. The high percentage of officers incapacitated in the first minutes of the battle also suggested that someone was beating them, as they say, “by choice” - of course, it was snipers who were beating them...” However, create your own sniper school, putting the training of shooters “on stream” ”, succeeded only much later, in the Red Army. This book, the first professional study of sniper business, was translated into Russian 85 years ago, but for two-thirds of a century it lay in special storage under the heading “For official use” and is only now becoming available to the masses to the reader.