The caption on this photo that dates to the early 1920s reads: Americans in shell holes in No Man’s Land preparing for the gas waves coming toward them.

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Size: 4740px × 3501px
Photo credit: © Ivy Close Images / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 1910s, 20th, americans, century, gas, great, holes, land, man’, masks, shell, states, united, war, world, wwi