"Tank and tractor demonstration by the Ordnance Department in Rock Creek Park, Washington, on February 28, 1921. The photo shows a 6" rifle mounted on a tractor during the demonstration. The description notes the identification number, signal corps photographer, and date of the demonstration as February 8, 1921."

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Size: 8551px × 5778px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., 2/28/21, 2/8/21, 6, 4058595, activities, american, corps, creek, demon, demonstration, department, description, issued, military, mounted, notes, ordnance, park, photographer, reco, rifle, rock, signal, symbol, takes, tank, tractor, war, washington, world