Men are seen receiving instruction in radio training during World War One. They are looking down from an airplane at a miniature replica of a battlefield sector. The cadets utilize radio instruments to report on the location of battery burstings based on signals from a director on the field.

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Size: 7981px × 6304px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., 1917, accuracy, activities, airplanes, american, artillery, aviation, battlefield, corps, flyers, instruction, instruments, intelligence, laboratory, military, notes, observation, photographer, qualification, radar, radio, reporting, reproduction, signal, tra, training, transmission, war, world