Western front. Sentry in full equipment in an advanced position. May 23, 1918

Chicago citation style
War Department. 1789-9/18/1947. Western front. Sentry in full equipment in an advanced position. May 23, 1918. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/17391516. (Accessed September 23, 2018.)
APA citation style
War Department. 1789-9/18/1947, Western front. Sentry in full equipment in an advanced position. May 23, 1918. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/17391516
MLA citation style
War Department. 1789-9/18/1947. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/17391516>.
Note: These citations are programmatically generated and may be incomplete.