World War 1 historical poster for fans of World War 1 Posters and military history. Landscape Mess formation, detention barracks, Naval Training Station, San Francisco, California., ca. 1918
World War 1 was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilized in one of the largest wars in history. Over nine million combatants and seven million civilians died.