National Comics #27

The Unknown, a mysterious masked hero, becomes entangled in a World War II espionage plot involving Nazi soldiers and a secret work train. The Unknown must intercept an armored train carrying munitions destined for a Rupp ammunition plant while also rescuing French patriots and workers being transported by the Nazis. As the Unknown and his allies attempt to derail the train and liberate the captives, they engage in combat with Nazi forces, ultimately planning to deliver the train to the Rupp munitions facility at dawn to support the French resistance efforts.