Trench in the snow in Alsace, 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.
World War I soldiers in trenches during write letters home. Life in the trenches was summed up by the phrase which later became well-known: "Months of boredom punctuated by moments of extreme terror." (Netherlands Nationaal Archief) in Atlantic Monthly