Aerial shot of preserved World War I trenches in a lush green forest in Ieper, Belgium.

A continent digs in

Barbed wire, machine guns, and artillery made open warfare suicidal. Both sides vanished into entrenched lines.

World War I: Why Trenches Ruled the West

A soldier in camouflage and gas mask in dramatic lighting, evoking intensity.

Science turns deadly

At Ypres, Germany unleashed chlorine gas, violating the Hague rules. Tanks and new tactics crawled into the fight.

World War I: Why Trenches Ruled the West

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