(See how World War I energized mapmaking at National Geographic.) Photographed in 1917, an endless line of Russian soldiers sit patiently in a trench as they anticipate a German attack. National ...

British soldiers read a map in the trenches of the Western ... during World War One. Around 75,000 British soldiers suffered from the condition during WW1. Hygiene and sanitation in the trenches ...

Masterminded in the latter half of World War I, the German trench strategy called Defence in Depth proved to be a much more ...