Nazi Germany's efforts to weaken the United States by subversion failed miserably. Bungling spies were captured and half-hearted efforts at sabotage came to nothing. Yet anyone who lived through WWII remembers the chilling posters warning Americans that "Enemy Agents Have Big Ears" and "Loose Lips Sink Ships." Even Superman joined the struggle against these insidious foes. In 1940, polls showed that 71% of Americans believed a Nazi Fifth Column had penetrated the country. Almost half were convinced that spies, saboteurs, dupes, and rumor-mongers lurked in their own neighborhoods and...
Nazi Germany's efforts to weaken the United States by subversion failed miserably. Bungling spies were captured and half-hearted efforts at sabotage c...
