American soldier wearing a Tissot mask for protection against chemical warfare during World War I. This image was taken by a photographer from the Chemical Warfare Service on April 2, 1919. The mask bears the number AU and was issued to soldiers on the American side. Notes indicate that this is photograph number 1044.

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Size: 8484px × 5809px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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