Every nation involved in World War I published posters that justified the war to its citizens and encouraged them to help with the war effort. The United States, which was in the war for only a year and a half, produced more of these propaganda posters than any other nation.
From the Getty Research Institute: "This exhibition examines World War I from two perspectives: the representation of the war in propaganda, and the depiction of war by artists who experienced the brutality firsthand."