- Big Name Fan: John Huston considered this, Stagecoach and Red River to be among the three best westerns ever made.
- Hostility on the Set: Terence Young clashed throughout the production with producer Ted Richmond, who later told International Soundtrack Madrid in 1971, "We were both under tremendous tension, but I'm planning three more pictures with Young." Not surprisingly, that turned out to be wishful thinking as the two never worked together again.
- International Coproduction: This was a French-Italian-Spanish co-production.
- What Could Have Been: Terence Young originally wanted Clint Eastwood to star.
Trivia / Red Sun