The author recounts the emergence and organization of sniping, observation and scouting in France and Flanders, combining frontline memories with systematic instruction. He describes the founding and curriculum of a dedicated training school, practical techniques for camouflage, loopholes, stalking, telescopic and periscopic sights, night work and report procedures, and the adaptation of tactics for allied units. Illustrated examples and appendices supply programmes for observers, care and grouping of arms, range practice and patrol methods. The result is a mixed memoir and handbook that records operational experiences while offering detailed, scientific guidance for training and employing snipers, observers and scouts.