New York Times bestselling historian Craig Nelson reveals how FDR confronted an American public disinterested in going to war in Europe, skillfully won their support, and pushed government and American industry to build the greatest war machine in history, "the arsenal of democracy" that won World War II. As Nazi Germany began to conquer Europe, America's military was unprepared, too small, and poorly supplied. The Nazis were supported by robust German factories that created a seemingly endless flow of arms, trucks, tanks, airplanes, and submarines. The United States, emerging from the Great Depression, was skeptical of American involvement in Europe and not ready to wage war. Hardened isolationists predicted disaster if the country went to war. In this fascinating and deeply researched account, Craig Nelson traces how Franklin D. Roosevelt steadily and sometimes secretively put America on a war footing by convincing America's top industrialists such as Henry Ford Jr. to retool their factories, by diverting the country's supplies of raw materials to the war effort, and above all by convincing the American people to endure shortages, to work in wartime factories, and to send their sons into harm's way. Within a few years, the nation's workers were producing thousands of airplanes and tanks, hundreds of warships and submarines. Under FDR's resolute leadership, victory at land and sea and air across the globe began at home in America?a powerful and essential narrative largely overlooked in conventional histories of the war but which, in Nelson's skilled, authoritative hands, becomes an illuminating and important work destined to become an American history classic.