The Great War began in Europe on July 28, 1914, with the assassination of Archduke Franz Ferdinand of Austria. The United States officially fought in the last 19 months. The war ended with a ceasefire on Nov. 11, 1918, and the signing of the Armistice.
Ferdinand was the heir to the throne of Austria and Hungary. The assassination of Ferdinand and his pregnant wife, Sophie, was carried out in Sarajevo by a Bosnian revolutionary and triggered a series of events culminating in full-fledged global war.
In all, the war killed some 20 million people, including more than 10 million civilians. Nearly 120,000 U.S. military personnel died in the war, but not all from combat. Disease — particularly the Spanish influenza — killed many soldiers before they reached Europe.
Idaho lost nearly 400 men in World War I. Fifty-three, including 96-year-old Betty Pastoor's uncle Kenneth Brown, were from the Magic Valley.