Rifle grenade in a British line trench in the Balkans

No man's land, sea of barbed wire in front of Bulgarian lines, Saloniki front

In a British first line trench in the Balkans

British anti-aircraft gun in action on Balkan front, camouflaged and mounted on auto

Great naval gun and its protecting fort of sand bags on the Saloniki front

Serbian cavalry ready for battle on the Balkan plains

Serbian reserves in the Balkan mountains awaiting orders to advance

French colonial (Morocco) cavalry in Paris

West Beach, Gallipoli. Scene of British landing and of terrible battles

Historic first landing of allied troops at Dardanelles

Turks eager for war. Germany's most distant ally mobilizing her army

Steel-helmeted Scots entrenched and cheerily awaiting a counterattack

"Down in the shell crater, we fought like Kilkenny cats," Battle of Cambrai

Proud men of the north who fought on Flander's fields

Temporary homes in devastated Lens, long occupied by the Germans, France

A family in their ruined house, Lens

No man's land near Lens, France

Where Hell was loosed; war's indescribable desolation and unburied victims, Lens

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

Marshal Haig and General Antoine at review of French First Division

Ypres Cathedral in ruins, British lory in foreground

Shell bursting in the Grand Place, Ypres, Belgium

Trenches bitterly contested in battle in once peaceful village near Ypres

Creeping on the enemy over the sand dunes, British contingent in Belgium

Strong concrete German position and victims after Battle of Menin Road

British Royal Engineers constructing second line trenches in Flanders

A bristling forest of bayonets, Russian troops on review

British soldiers gleaning in the fields of war, Menin Road

Nursing wounded heroes back to health, Convalescent Hospital No. 5, New York

Happy reunion for home-coming soldier fathers