Soldiers at Camp Sherman, Chillicothe, Ohio, using a type of trench mortar during World War I. This photograph was taken in August 1918 by Howard F. Knoll and is labeled as "FOR OFFICIAL USE ONLY."

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Size: 8475px × 5711px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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