Sir Charles G. D. Roberts, Canada in Flanders, Volume III
“ The battle is no longer between the opposing lines of the infantry, for to win a position you must hold it, and to hold it you must have brought up swiftly and safely from the rear bombs, ammunition, wire rations, and a means of entry for the supporting and relieving troops, the area of the battle is no longer the front line, it is behind this that the enemy barrage descends, and over a wide field of fire the German shells are searching for all those who would bring up succour and relief. It is under these conditions that the pioneers must do their work. ”
