DescriptionFive U.S. Army personnel stand around an emplacement gun. One man appears to be holding a bore rod while another tends to shells lying on the ground. The scene is filled with smoke, and tall grass in the foreground.TypeImageGenrephotographsDate1916-07-31SubjectYellowstone National ParkUnited States. Army--History Contributing InstitutionYellowstone National Park Heritage and Research CenterTime Period Represented07/31/1916Digital CollectionYellowstone National Park PhotographsDigital Formatimage/jpgPhysical CollectionYellowstone National Park Museum CollectionPhysical DimensionsH 12.0, W 10.0 CMDigitization SpecificationScanned at 1200 dpiDate Digitized2017Photo NumberYELL 36929Contact UsFor more information contact Yellowstone National Park Heritage and Research Center: yell_heritage_center@nps.gov / (307) 344-2264.