British soldiers with gas masks following the use of of poisoned gas first used in April 1915. Either Chlorine or Mustard Gas was released from cylinders in a dense cloud or fired in shells to become a regular offensive weapon on both sides of the conflict.

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Size: 3120px × 3377px
Location: France
Photo credit: © De Luan / Alamy / Afripics
License: Licensed
Model Released: No

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