USA HISTORY

Detailed explanation-1: -During World War I, trench warfare was a defensive military tactic used extensively by both sides, allowing soldiers some protection from enemy fire but also hindering troops from readily advancing and thus prolonging the war.

Detailed explanation-2: -In fact, trench warfare remains arguably the most effective strategy for infantry where, for whatever reason, armor and air support are lacking. During the Iran-Iraq War (1980–88), after initial gains by the Iraqi army, the fighting settled into years of trench warfare.

Detailed explanation-3: -World War I was a war of trenches. After the early war of movement in the late summer of 1914, artillery and machine guns forced the armies on the Western Front to dig trenches to protect themselves.

Detailed explanation-4: -Land battles quickly led to trench warfare on the Western Front in Belgium and France. Each side occupied fighting lines (fronts) made up of trenches dug into the ground or breastworks constructed above low-lying country.