On this day in history, the first American troops landed in France to join the Allies' fight in World War I. Their arrival brought renewed hope to Allied forces, weary from years of war. Under General John J. Pershing, the American Expeditionary Forces would soon grow into millions. But that first arrival–on the docks of Saint-Nazaire–signaled something greater: America was committed. On July 4th, U.S. troops marched through Paris as a symbol of the United States' entry into the war. And at Lafa