Smithsonian - World War I CentennialThe 100th anniversary of U.S. involvement in World War I is being observed at our museums, archives, and libraries. We invite you to tour our exhibitions and participate in events. Explore online and examine major artifacts from "The Great War," read stories of heroes who served in Europe and on the home front, learn about technological advances that enabled Allied victory, the impact of WWI on popular culture, and how the Smithsonian Institution contributed to the war effort.