After Pearl Harbor, German, Italian and Japanese diplomats, along with their staffs and families, were relocated to two lavish but isolated resorts in Appalachia, where the State Department insisted they be treated as distinguished guests. As the war progressed, other Axis envoys were similarly detained. (The Japanese ambassador to Germany was captured by U.S. soldiers in Europe and held in a small hotel in rural Pennsylvania, while the War Department argued for treating him as a war criminal and the local population decried his luxurious accommodations.) Informants were recruited, attempts...