As a nominally neutral power during the Second World War, Sweden in the early postwar era has received comparatively little attention from historians. Nonetheless, as this definitive study shows, the war—and particularly the specter of Nazism—changed Swedish society profoundly. Prior to 1939, many Swedes shared an unmistakable affinity for German culture, and even after the outbreak of hostilities there remained prominent apologists for the Third Reich. After the Allied victory, however, Swedish...