WWI: SOLDIERS, c1915.
WWI: TRENCHES, c1915.
WWI: DUGOUT, c1914.
WWI: TRENCHES, c1914.
WWI: SOMME, c1916.
WWI: FIELD PHONE, c1914.
WWI: CRAONNE, c1914.
WWI: BREST-LITOVSK, 1915.
WWI: FRENCH SOLDIERS.
WWI: BELGIUM, c1914.
WWI: SOLDIERS, c1914.
WWI: SOLDIER, c1915.
WWI: TANK, c1915.
WWI: HOWITZER, c1915.
WWI: GERMAN SOLDIERS, 1914.
WWI: ARMORED CARS, c1915.
WWI: ARMORED CAR, c1915.
WWI: SOLDIERS, 1914.
WWI: SHELTER, c1914.
WWI: CYCLISTS, c1914.
WWI: BELGIAN ARMY, c1914.
WORLD WAR I: TRENCH, c1914.
WORLD WAR I: FRANCE
WWI: ITALY, c1916.
WWI: ARMORED CARS, c1914.
WWI: GERMAN SOLDIERS.
WWI: TRENCHES, c1916.
WWI: GERMAN RIFLEMEN, c1915.
WWI: FRANCE, 1918.
WWI: MOTORCYCLES, c1914.
WWI: MASS, c1914.
WWI: ZOUAVES, c1914.
WWI: MITRAILLEUSE, c1914.
WWI: COOKS, c1914.
WWI: GERMAN SCOUTS, c1915.
WWI: PARIS, c1914.
WWI: KITCHEN, c1914.
WWI: WOUNDED SOLDIER.
WORLD WAR I: TRENCH, c1915.
WWI: GERMAN SOLDIER, c1914.
WWI: BRITISH SOLDIER, c1914.
WWI: VETERAN, c1917.
WWI: BRITISH TROOPS, c1914.
WWI: INDIAN ARMY, c1914.
WORLD WAR I: SOMME, 1916.
WORLD WAR I: FRENCH FORT.
WWI: WOUNDED SOLDIERS.
WWI: FRANCE, c1916.
WWI: CASUALTIES, c1914.
WWI: PRISONERS OF WAR, 1915.
WWI: CHRISTMAS, c1915.
WWI: SOLDIERS, 1918.
WWI: BATTLEFIELD, c1916.
WWI: ARRAS, c1919.
WWI: PRISONERS, c1914.
WWI: AIRPLANE, c1914.
WWI: VACCINATIONS, c1914.
WWI: UHLANS, c1914.
WWI: ROUEN, c1914.
WORLD WAR I: TRENCH.
WWI: SOLDIER, c1917.
WWI: BURIAL, 1914.
WWI: RUSSIAN INFANTRY.
WWI: FIELD TELEPHONE.
WWI: TROOPS, 1914.
WWI: PRISONERS OF WAR.
WWI: SPAHIS, 1914.
WWI: CASUALTIES, 1914.
WWI: SOLDIER, c1914.
WWI: ANTI-AIRCRAFT, c1914.
WWI: FRENCH TROOPS, c1914.
WWI: FRENCH ARMY, c1914.
WORLD WAR I: TELEPHONE.
WWI: KITCHENS, c1917.
WWI: HUSSARS, 1914.
WWI: PRISONERS, 1915.
WWI: 369TH INFANTRY, c1918.
WWI: FRANCE, c1914.
WWI: EIFFEL TOWER, c1914.
British soldiers known as 'Tommys' assisting residents of Etaples.
WWI: BLANZY, 1918.
WORLD WAR I: BATTLEFIELD
WWI: BUS, c1914.
WWI: SOLDIERS, c1916.
WWI: BOULOGNE, c1914.
WWI: HOSPITAL, c1915.
WORLD WAR I: BELGIUM, c1915.
WWI: AUSTRIAN TROOPS.
WWI: PASSCHENDAELE, 1917.
WWI: FIELD BAKERY, 1914.
WWI: MUSICIANS, 1914.
WWI: FIELD KITCHEN, 1914.
WWI: GERMAN ARTILLERY.
WALTER REED HOSPITAL, c1918.
WWI: TELEPHONE OFFICE.
WWI: BRITISH SOLDIERS.
WWI: ALGERIAN SOLDIERS.
WWI: PRISONER OF WAR, c1914.
WWI: FLANDERS, c1916.
WWI: AMERICANS IN PARIS.
WORLD WAR I: TRENCHES.
WORLD WAR I: RIFLE GRENADES.
WORLD WAR I: FRENCH TROOPS.
WORLD WAR I: ANTI-AIRCRAFT.
WWI: SOLDIER AND HORSE.
WWI: TRENCH MORTAR.
WWI: GERMAN INFANTRY, c1914.
WWI: AMERICAN TROOPS.
World War One British soldiers.
WORLD WAR I: RAILWAY LINE.
WWI: FRENCH LINE OF DEFENSE.
WORLD WAR I: DUINO CASTLE.
American Soldiers at the Declaration of War.
British soldiers at a camp in Belgium.
A Canadian Scottish soldier with two British Highland regiment soldiers.
American soldiers advancing on a German bunker position.
326th Infantry, 82nd Division, advancing on enemy positions in Choloy.
British Indian soldiers behind a fortification.
WORLD WAR I: GRAVES, 1914.
WORLD WAR I: BELGIUM.
WWI: GAS WARFARE.
WWI: NORTH AFRICAN TROOPS.
WWI: SIBERIAN TROOPS.
WORLD WAR I: TILLOLOY.
WWI: BATTLE OF THE MARNE.
WWI: BAVARIAN SOLDIERS.
WWI: SOLDIER, c1916.
WWI: FRENCH ATTACK.
WORLD WAR I: PARADE, 1919.
WWI: RED CROSS FORT, c1915.
WWI: FORT, c1914.
WWI: BATTLE OF ARRAS, 1917.
WWI: ITALIAN ARMY, c1916.
WORLD WAR I: FRENCH DUGOUT.
WORLD WAR I: TRENCH, 1918.
WORLD WAR I: SERBIA, c1915.
WWI: AMERICANS IN FRANCE.
WORLD WAR I: TRENCH, c1917.
WORLD WAR I: TOUR, C1918.
WWI: ARTILLERY, c1915.
FRANCE: AMERICAN TROOPS.
WORLD WAR I: GERMANY, 1918.
WORLD WAR I: CANNON, 1915. Turkish soldiers equipping a cannon with desert tires, during World War I. Photograph from the Berliner Illustrirte Zeitung, 14 March 1915.
WWI: FRANCE, c1918.
WWI: RUSSIAN RETREAT, 1915.
Italain soldiers in different regimental uniforms.