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

All pictures extracted from Postcards from the Trenches: A German Soldier's Testimony of the Great War by Irene Guenther, published by Bloomsbury Visual Arts.

Trenches became valuable to WW1 armies because they were a defensive ... which they saw as a temporary measure. If you look at pictures of the earliest trenches, they were little more than simple ...