Western Front, Aerial View

World War I became known for the trench warfare that characterized much of the fighting on the Western Front. In trench warfare, armies fought each other using field fortifications made up of parallel rows of trenches. In this aerial photo of the Western Front in 1916, no man’s land can be viewed between the two systems of trenches. Support trenches, the trenches that run behind the frontline trenches, can also be seen.