Fact1: RAF B-17 bomber is shot down near former Polish border, Fact2: Hammond creates distraction by pretending to explain bomber 's technology in technobabble double-talk, Fact3: group searches major 's office, Fact4: Reichsmarschall Goring 's private car is in train being transported for maintenance, Fact5: Baumeister has traveled by air to overtake it
Output: Assigned to bomb a critical German railway junction, Australian Flight Lt. Terrence Forbes Errol Flynn presses home an attack at low altitude, and his RAF B17 bomber is shot down near the former Polish border. The five survivors—Forbes, American Flying Officer Johnny Hammond Ronald Reagan, Flight Sgt. Kirk Edwards Alan Hale, Sr., Flying Officer Jed Forrest Arthur Kennedy, and the injured Flight Sgt. Lloyd Hollis Ronald Sinclair—are quickly captured by the Germans. Interviewed by Gestapo Major Otto Baumeister Raymond Massey, Hammond creates a distraction by pretending to explain their bombers technology in technobabble doubletalk; then he suddenly knocks the major unconscious. Forbes then subdues the other soldiers and the group searches the majors office. They find papers showing a hidden Messerschmitt aircraft factory, and determine to get them to England. Setting out on their dangerous trip across enemy territory, they attack a patrol to obtain German uniforms, then sneak onto a hospital train heading for Berlin. Conveniently, Reichsmarschall Gorings private car is in the train, being transported for maintenance; they hide in the empty car, helping themselves to luxuries. Just before reaching Berlin, they are found in the car and thrown off the train; but this enables them to avoid Baumeister, who has traveled by air to overtake it. They hide in an abandoned Berlin building, but while scouting for food, they see an important chemical plant and decide to sabotage it so they will do some damage to the enemy even if they cannot get the documents to England. As they are getting away, there is a gun battle and Hollis is wounded again. They happen on a member of the underground, Kaethe Brahms Nancy Coleman, who takes them to a doctor, but Hollis dies. Brahms advises the crew to cross the country to Munster, where her parents are also resistance members amd can help them escape Germany. With Baumeister on their trail, the men reach the Brahms house, but it is a trap: Kaethes parents have been captured and Gestapo members are impersonating them. When Kaethe arrives, the ruse is exposed. The crew members manage to escape over the roofs, but Edwards is shot and falls to his death. Kaethe rejects an offer to accompany the men to England; the underground has more work to do. The others steal Baumeisters car and cross into the Germanoccupied Netherlands as he pursues in another car. Finally they run out of petrol, but when they see a petrol tanker stop nearby, they find a captured British Hudson bomber, concealed there, that is being prepared for an attack on England. They overpower the flight crew and steal it, but Forrest is shot. They use the airplanes guns to blast their way past the soldiers on the ground, killing many of them, including Baumeister. After takeoff, on their way to the English Channel, Hammond releases the bomb aboard, destroying a German base. As they reach safety, Forbes and Hammond learn that Forrest will recover from his wounds.