the bit with the tin hat was also in that book red you put a painted paper mache head under it put a lighted fag in its gob then let the enemy sniper take a shot at it when the enemy sniper took the shot u used a trench periscope on the bullet hole to give you a rough idea where he was then you either got another sniper to slot him or called in artillary (very expensive but effective) to get him :yp: