St. Nazaire, France
Established in June 1917, the Naval Operating Base at St. Nazaire, France, began to receive American Expeditionary Forces that same month. The location was also the port where the U.S. Naval Railway Guns arrived for service. The west-coast port was disestablished after the war.
Image: LC-Lot-8310-2: View of docks and harbor at St. Nazaire, Base Section No.1., May 31, 1918. Courtesy of the Library of Congress.