Over a 1000 pipers died during WWI. These extraordinary men were sitting ducks as they went over the top to pipe their men into battle. One of 10 Telling Images from WW1: http://www.britishpathe.com/gallery/ww1-telling-images
Gallipoli 1915, British soldiers making bombs from empty jam tins, filled with scraps of metal, barbed wire and shell fragments, circa 1915. They were first used on 4 June 1915 before the Third Battle of Krithia.
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.