Dead horses are buried in a trench after the Battle of Haelen which was fought by the German and Belgian armies on August 12, 1914 near Haelen, Belgium. Horses were everywhere in World War I, used by armies, and caught up in farm fields turned into battlefields, millions of them were killed. (Library of Congress) #
Trench in the snow in Alsace, 1915-1916. Barbed wire is often under-rated as a tool of defensive warfare, especially in the First World War. It was another technical innovation of the fifty years preceding the outbreak of the Great War.