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.
First World War veteran and later cabinet minister Brooke Claxton originally prepared these notes in the form of lectures for the McGill University Contingent of the Canadian Officers' Training Corps. They cover everything from courts martial to morale and efficiency.
The UK War Office produced and issued a series of short training manuals used by both the British and Canadian armies. Collectively, these manuals established the doctrine, or tactical procedures, for both armies throughout the war. This 1944 manual concerns the operation of the infantry battalion.