Grenades in trench warfare

One lesson of trench warfare was that "bombing" (or using hand grenades) was much more important in capturing and clearing enemy trenches than had been imagined before the war. As a result, training manuals like this one by James Ferris, who joined the 63rd Battalion in Edmonton in July 1915, were published as a way to pass on new tactical knowledge.

Lieut J.R. Ferris, Bombers’ Training and Application of Same in Trench Warfare (Toronto: William Briggs, 1916)

Ley and Lois Smith War, Memory and Popular Culture Research Collection - The University of Western Ontario - London, Ontario
manual, 44 pages, 10.8cm x 14.7cm