Trivia: The hat band on John Wayne's hat once belonged to Gary Cooper. It was a gift to John from Cooper.
Trivia: Peter Fonda meets up with two prostitutes in the film. One is Karen Black and the other Toni Basil who gave us that neat little hit Mickey in 1981.
Trivia: The most famous line in this film is purely ad-libbed. Apparently a tough New York cabbie broke through and drove across one shoot, nearly running down Jon Voight (Joe Buck) and Dustin Hoffman (Enrico Salvatore "Ratso" Rizzo). Notice Voight's startled expression. Hoffman, still in character, slams on the hood and shouts at the cabbie, "Hey, I'm walkin' here. I'm walkin' here."
Trivia: During the Stuka attack on the radar station, the two Stuka radio controlled models that collide was a complete accident. It looked good so was left in the final version.
Trivia: Katherine Ross, (Etta Place) was caught operating a camera, filming some footage of the arrival of the train carrying the "super posse". In the late 60s the US film business was strict, closed shop union (to a great extent it still is) and Ross operating a camera was against every rule there is. Several senior crew members demanded her dismissal from the film but producer John Foreman and Unit Production Manager Lloyd Anderson, aware of the fact that a lot of scenes with her in it would have to be reshot at absurd expense, argued for a compromise to which the union agreed - none of the footage she shot would be used (it wasn't) and she would be asked not to be on set while scenes in which she was not involved were shot. Her gender was totally irrelevant to the issue. This is confirmed in William Goldman's excellent memoir, "Which Lie Did I Tell?"
Trivia: The filming in Czechoslovakia was interrupted due to life imitating art somewhat when in August 1968 the Soviets decided to invade. The evacuation of cast and crew was performed using a fleet of 20 taxis.
Trivia: When the boys are in Mr. Gryce's office, the producers hadn't told them beforehand that they were going to get caned. So whatever reactions the boys display are their real reactions. Afterward, the boys ran out crying. The producers paid them each ten bob to shut them up.
Trivia: Ernest Borgnine's limp is genuine because he broke his foot before production began.
Trivia: Right at the very end, when the group of people is milling around staring at each other, watch for Barbara Feldon, from Get Smart.
Trivia: Although they played mother and daughter in this film, Teresa Wright was only eleven years older than Jean Simmons.
Trivia: The film currently holds the record for being nominated for the most Academy Awards (nine) without a nomination for Best Picture.
Trivia: This film is based on a true story; but, of course, much dramatic license is taken with the facts. For example, while the movie depicts Lola shot in the chest (either by Willie Boy or by herself), the real-life "Lola" was shot in the back by the posse that was chasing them. Also, while the movie depicts Sheriff Cooper gunning down Willie Boy at the end, the real-life Willie Boy committed suicide by his own hand.