The war associated with the terms "Trench Warfare" and "No Man's Land" is World War I. This conflict, which lasted from 1914 to 1918, saw extensive and grueling trench warfare, particularly on the Western Front. Soldiers lived in harsh conditions within long networks of trenches, facing the threats of enemy fire, disease, and artillery bombardment. "No Man's Land" referred to the dangerous and barren expanse between opposing trenches, often littered with barbed wire and debris, where many soldiers lost their lives during attempts to advance. The brutal realities of this type of warfare led to massive casualties and highlighted the horrors of modern combat.