American soldiers observing enemy fortifications and trenches during World War One. The soldiers are studying the varying widths and construction materials of the trenches, as well as identifying covered trenches and listening posts. They are also analyzing the placement of machine guns and trench artillery, which are heavily camouflaged by the enemy.

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Size: 9182px × 6304px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: activities, america, american, artillery, camouflage, chalk, chimneys, construction, corp, cross, defense, delioute, earth, emplacement, fire, firestep, fortifications, garth, guns, interpretation, interpreter, listening, machine, military, network, observers, parapet, photographic, pieces, planks, posts, reason, rectangles, roofing, sap, shell, shield, signal, small, tactical, task, throwers, trenches, ventilating, war, wire, work, world