Most Americans are unclear about their country’s contribution to victory in World War I. They figure we entered the conflict too late to claim much credit, or maybe they think our intervention was discreditable. Some say we had no compelling national interest to enter the Great War; worse, our intervention allowed Britain and France to force on Germany an unjust, punitive peace that made the rise of Adolf Hitler’s National Socialist German Workers Party inevitable. Had we stayed out of the war, the argument goes, the Europeans would have been compelled to make a reasonable, negotiated peace, and postwar animosity would have been lessened.

In this episode, we explore whether American involvement in World War One led to needless slaughter or served the purpose of creating a better future for Europe and the United States than would have been the case if Germany's Second Reich had dominated the continent.