Student officers' at the anti-aircraft gun school in Fortress Monroe, Virginia, using a wire altimeter to determine the altitude of a target. An officer communicates with an observer stationed 700 feet away in a tower using a telephone. This photograph was taken in April 1918 by Lt. William Fox. Not to be published, for official use only.

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

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