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US troops in a line / WWI / 1917
World War One / USA declares war on Germany on 6 April 1917.

Soldiers of the 27th Division of the New York National Guard on their way to a training camp.

World War I: Mobilisation
As soon as war was declared, men were called to fight for their country. We present a small selection of images of the mobilisation of troops in Germany and the United Kingdom, as well as the later mobilisation of American troops.

Photo albums from the First World War

World War I: Key figures

World War I: Assassination

World War I: Uniforms

World War I: Ground Warfare

World War I: Aerial warfare

World War I: Naval warfare

World War I: Women in Wartime

World War I: Armistice

World War I: Aftermath

World War I in paintings

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