American troops, First World War, 1917, (c1920). 'The Call to Arms in the United States: the National Guard leaving for its training camp after mobilization'. The USA joined the war in April 1917. From "The Great World War: A History", Volume VII, edited by Frank A Mumby. [The Gresham Publishing Company Ltd, London, c1920]

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Size: 6114px × 3498px
Photo credit: © The Print Collector / Alamy / Afripics
License: Licensed
Model Released: No

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