You’re now in a British communication trench, just wide enough for two men to pass each other and recognizable from the lack of a firing platform. This trench connected the first line fighting trench with the second and third line trenches. Do you immediately notice the duckboards? Although they don’t look particularly well designed for walking on, they kept the men’s feet dry. They are laid on wooden frames in the shape of an inverted letter A. These A-frames, along with the characteristic planks and corrugated-iron walls, are typical of British trenches. See the many similarities in the structure? Many of these elements were produced behind the lines and delivered in kit form. Because of its access to the world market and to its colonies, the British Empire suffered less than the Germans from shortages of materials. That meant trenches could be built more quickly.