28 Apocalyptic Pictures From The Front Lines Of World War I

An American soldier shakes hands with a child as troops parade through the streets of London before leaving for the front lines in 1917.

A group of American soldiers along the Western Front fire a 37-mm gun at the German position in France on April 3, 1918.

A firefight takes place on the banks of Poland's Dunajec river in this hand-colored lantern slide from around 1914.

German soldiers in gas masks fire an anti-aircraft gun against incoming low-flying airplanes in 1916.

A French section of machine gunners takes position in the ruins during the battle of the Aisne in 1917.

British searchlights reveal a colossal German zeppelin quietly looming in the night sky during a bombing raid in 1916.

British soldiers with bayonets fight in the trenches on the Western Front of Cambrai in 1917.

A fort in Przemysl, Poland, is shown in complete ruins after an enemy bombardment, circa 1915.

A British tank advances on the Western Front in 1917.

French troops with bayonets and primitive gas masks prepare for combat in the second Battle of Ypres in 1915.

A Vickers machine gun team from Britain's Machine Gun Corps use PH anti-gas helmets to protect themselves from chemical weapons near Ovillers, during the Battle of the Somme in 1916.

A sergeant of a Royal Engineers signals section puts a note into the cylinder attached to the collar of a messenger dog in August 1918.

French troops take cover from shellfire during the Battle of Verdun in 1916.

A group of soldiers inspect the aftermath of an artillery strike on horse-drawn German ambulances in 1915.

Medical workers bandage the wounded in a Belgian military camp hospital, circa 1916.

Servicemen attend the mass funeral in Cobh, Ireland, of the victims of the Lusitania disaster during 1915. The Cunard liner was torpedoed by a German submarine off the coast of Ireland and sank, killing 1,198 people aboard.

A service is held in Hoboken, New Jersey, for American soldiers who died on the battlefields of France, circa 1920.

Supporting troops of the 1st Australian Division walk on a duckboard track near Hooge, in the Ypres Sector, in October 1917.