WORLD WAR I: CANNON.
WORLD WAR I: CANADIANS.
WORLD WAR I: PONTOON BRIDGE.
WORLD WAR I: CAMOUFLAGE.
WORLD WAR I: GERMAN GUN.
WORLD WAR I: CAMBRAI, 1917.
WORLD WAR I: ARTILLERY.
WORLD WAR I: EXPLOSION.
WORLD WAR I: GALLIPOLI.
WORLD WAR I.
WORLD WAR I: TRENCH, c1916.
WORLD WAR I: BRITISH GUN.
WORLD WAR I: OBSERVATION.
WORLD WAR I: REFUGEES.
WORLD WAR I: VERDUN.
WORLD WAR I: BARBED WIRE.
WORLD WAR I: AUSTRIAN GUN.
WORLD WAR I: GUNNERS.
WORLD WAR I: SOMME.
WORLD WAR I: ARMED BARGE.
WORLD WAR I: TRENCH DIGGING.
WORLD WAR I: HEADQUARTERS.
WWI: AMERICANS, 1918.
WORLD WAR I: GERMAN TROOPS.
WORLD WAR I: BATTLEFIELD.
WORLD WAR I: ANTI-AIRCRAFT.
WORLD WAR I: QUARRY.
WORLD WAR I: ARGONNE, 1918.
WORLD WAR I: RUSSIAN ARMY.
Destroyed French town, World War I
WWI: PRISONERS OF WAR.
WWI: FIELD KITCHEN, 1914.
WORLD WAR I: SOMME FRONT.
WORLD WAR I: SPAHIS, 1914.
WORLD WAR I : VERDUN
WORLD WAR I: TRENCHES.
WORLD WAR I: TRENCH.
WORLD WAR I: BOURESCHES
WORLD WAR I: ALBERT CHURCH
WORLD WAR I: FRENCH TANK.
WORLD WAR I: BALLOON.
WORLD WAR I: TRENCH, c1917.
WORLD WAR I: DAMAGED PLANE.
WORLD WAR I: CUPOLA, c1918.
WWI: AMERICAN TROOPS.
WORLD WAR I: GERMAN TRENCH.
WORLD WAR I: ALLIED PATROL.
WORLD WAR I: FLAMETHROWER.
WORLD WAR I: FRANCE.
WORLD WAR I: ALBERT CHURC
WORLD WAR I: SALVAGING
WORLD WAR I: TELEPHONE.
WORLD WAR I: FORTIFICATION.
WORLD WAR I: TRENCH, 1918.
WORLD WAR I: FRENCH FORT.
WORLD WAR I: TRENCH HUTS.
WORLD WAR I: RELAXATION.
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.
WORLD WAR I: NEVERS.
WORLD WAR I: DENDERMONDE.
WORLD WAR I: FIELD KITCHEN.
WORLD WAR I: CANNONS.
WORLD WAR I: THESSALONIKI.
WORLD WAR I: BATTLE.
WORLD WAR I: BUNKER.
WORLD WAR I: TANK WARFARE.
WORLD WAR I: JIAOZHOU.
WORLD WAR I: SPIKED BOARDS.
WWI: PRISONERS OF WAR, 1915.
WORLD WAR I: SURRENDER
WORLD WAR I: WOUNDED.
WORLD WAR I: PARADE.
WORLD WAR I: TRANSPORT.
WORLD WAR I: ZEPPELIN.
WORLD WAR I: SOLDIERS.
WORLD WAR I: TANKS.
WORLD WAR I: FARMERS.
WORLD WAR I: CAVALRY.
WORLD WAR I: SEARCHLIGHT.
WORLD WAR I: CHASSEUR.
WORLD WAR I: SPAHIS.
WORLD WAR I: FLANDERS.
WORLD WAR I: GERMAN PLANES.
WORLD WAR I: FRANCE, 1918.
WORLD WAR I: GAS WARFARE.
MARYLAND: CANNON, 1919.
CHINA: PEKING, c1902.
WORLD WAR I: U.S. TROOPS.
WORLD WAR I: GERMANY, c1918.
WORLD WAR I: AMERICANS.
WORLD WAR I: ARMORED TRAIN.
WORLD WAR I: ARMENTIERES.
WORLD WAR I: CASUALTIES.
WORLD WAR I: FRENCH DUGOUT.
WORLD WAR I: BRITISH TANK.
WORLD WAR I: LOUNGE, c1917.
WORLD WAR I: PILL BOX FORT.
WWI: RUSSIAN GUN, c1919.
MOSCOW: STREET SCENE.
SPAIN: CADIZ, c1908.
WWI: MILITARY POLICE, 1918.
WORLD WAR I: TRENCH, c1915.
WORLD WAR I: PRISONERS.
WORLD WAR I: VLADIVOSTOK.
U.S. FOOD ADMINISTRATION.
WWI: COOKS, c1914.
WWI: SPAHIS, 1914.
WORLD WAR I: HMS HERCULES.
French tanks, World War I
WORLD WAR I: ITALIAN GUN.
WWI: GERMANS TRANSPORT.
CHINA: VEGETABLE WASHING.
CHINA: SA HO BRIDGE, c1907.
WORLD WAR I: AMERICAN FRONT.
WORLD WAR I: WESTERN FRONT.
WORLD WAR I: GERMAN DEAD.
WORLD WAR I: BRITISH TANKS.
WORLD WAR I: SIGNAL STATION.
WORLD WAR I: BELGIUM, 1918.
WORLD WAR I: GUNNERS, 1918.
WORLD WAR I: FRENCH TANKS.
WORLD WAR I: TANK TRAP.
WORLD WAR I: ARMORED CARS.
WORLD WAR I: AERIAL PHOTO.
WORLD WAR I: FRENCH RUINS.
WORLD WAR I: VIMY RIDGE.
WORLD WAR I: U.S. ARMY.
WWI: BAVARIAN SOLDIERS.
GERMAN AIRCRAFT, 1917.
WORLD WAR I: CANAL DU NORD.
WORLD WAR I: FRENCH TRENCH.
Abandoned horse carts in a grassy field, Old Trail Town, Cody, Wyoming, USA
KANSAS: LAWRENCE, 1867.