Steel-helmeted Scots entrenched and cheerily awaiting a counterattack

Trenches bitterly contested in battle in once peaceful village near Ypres

British Royal Engineers constructing second line trenches in Flanders

"And the trench was a reeking shambles," German dead in the La Bassée area

French mine explosion under enemy trenches

Awaiting enemy in French trenches with rifle and mitrailleuse

French lines captured from the enemy by the Marine Fusileers

"Through sickly shrapnel-sown meadows reaped by death alone"

Airplane view of trenches and shell holes

Sharpshooters in protected position near enemy lines

In a French trench, sandbag protected, showing dart bombs

French soldiers resting in the trenches

"On all sides round a great furnace flamed," German attack, north Compeigne, France

Confederate soldiers killed in the trenches at Petersburg April 2, 1865 [at Fort Mahone].