Aerial photograph taken by the Signal Corps in 1918, showing an unidentified trench system. The image is labeled as Sumber 7498, with the photographer being the Signal Corps. The photograph was recorded on March 10, 1921, and bears the description "Symbol Aerial View of a Trench System." Note: 1880D C.

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Size: 9183px × 6305px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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