WORLD HISTORY

Detailed explanation-1: -trench warfare, warfare in which opposing armed forces attack, counterattack, and defend from relatively permanent systems of trenches dug into the ground.

Detailed explanation-2: -Trench warfare in World War I was employed primarily on the Western Front, an area of northern France and Belgium that saw combat between German troops and Allied forces from France, Great Britain and, later, the United States.

Detailed explanation-3: -Trench Warfare Trenches provided a very efficient way for soldiers to protect themselves against heavy firepower and within four months, soldiers on all fronts had begun digging trenches. This photograph shows French infantry manning a forward line of trenches in Lorraine during January 1915.