His account follows the development of sniping from the early battles of 1914, through the trench fighting and the attributional offensives of the middle years, to the renewed open warfare of 1918. He concentrates on the continuous British and German sniping war on the Western Front, but he also looks at how snipers operated in other theaters, at Gallipoli and Salonika and on the Eastern Front. Sniper training, field craft and counter-sniping measures are described in detail.

There is a full reference section giving the specification of the sniping rifles of the period and assessing their effectiveness in combat. Also featured are vivid memoirs and eyewitness accounts that offer a fascinating insight into the lethal skill of Great War snipers and their deadly trade.