Student officers at Fortress Monroe, Virginia, are seen participating in a training exercise in the observation of fire. The instructor demonstrates how to produce smoke-puffs chemically by pressing a bulb and moving a Pantograph. This photo was taken on April 18, 1918, and was censored and released by the censor on July 31, 1918.

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Size: 9177px × 6297px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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