How was Trench Warfare Both Effective and Dangerous? Zaid Tabaza 8’5 Figure 1: Soldiers in Trenches Trench warfare is the form of war in which the fighting troops battle against each other from trenches. While being a technique that has been used since a long-time in history, the Trench Warfare technique came into the spotlight when it was employed in World War I (WWI), where the Western Side (which had the location of France, Belgium and Alsace) used it as a defense strategy. Trench