In this charcoal sketch by H.J. Mowat, six Canadians leave the trenches to go on a raid. Given the apparent absence of sand bags, they are possibly exiting from an advanced listening post. Under moonlight, they will thread through their own wire and into No Man's Land before slipping through the enemy's wire and launching their attack. Raids could involve only a few soldiers sneaking quietly forward, like the one depicted here, or several hundred attacking with coordinated support from the artillery, mortars, and machine-guns.
Sketch by H.J. Mowat
Beaverbrook Collection of War Art