 By looking through the rear hole in the head, through the front hole and up through the periscope, the soldier would be looking exactly along the line the bullet had taken, and so would be looking directly at the sniper, revealing his position.Hesketh-Prichard was eventually successful in gaining official support for his campaign, and in August 1915 was given permission to proceed with formalised sniper training.By November of that year, his reputation was such that he was in high demand from many units.