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U.S. Marines wearing gas masks while training at Quantico, Virginia (1918)

United States Marines in training at Quantico, Virginia, going through drills in June 1918 "for the benefit of Secretary [Josephus] Daniels [Secretary of the Navy, 1862-1948] and other members of the government." Photographer: International Film Service. National Archives and Records Administration, cataloged under the National Archives Identifier (NAID) 26423794. (This image is a work of a U.S. military or Department of Defense employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States. Photograph edited by Dr. Douglas J Lanska.)