Engineers at American University in Washington, are seen working on camouflage techniques to conceal artillery emplacements from aerial and terrestrial observation during World War One. The photograph shows the challenge of hiding the gun covering from instructors stationed in a church tower 600 yards away. Censored and released on March 11, 1918.

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Size: 9182px × 6303px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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