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The opening and closing cast credits differ slightly in order. According to an April 1958 Los Angeles Examiner news item, producer William Goetz wanted Marlon Brando to star in the film. A December 1958 "Rambling Reporter" column in Hollywood Reporter stated that James Wong Howe was to be the film's director of photography, and a January 1959 "Rambling Reporter" column noted that Dora Ding was to play the female lead. Although a May 1959 Hollywood Reporter news item places Don Rickles in the cast, Rickles does not appear in the film. An October 1958 "Rambling Reporter" column adds that Robert Mitchum was being considered for a role in the film, which at that time was to be shot in South Korea.
Studio publicity in the film's production file at the AMPAS Library noted that location filming was done in the following Arizona locations: the set for the Chinese village was erected on the Horse Mesa Dam Road, 40 miles east of Phoenix; another set was erected in the vicinity of Superstition Mountain; the Fish Creek Hill Bridge on the Apache Trail was revamped to resemble the Chinese wooden bridge that is blown up in the action; and the temple set, ammunition and supply station and airfield were erected in Nogales. A July 1959 New York Times article adds that the extreme heat at the locations caused frequent cases of heat prostration among the cast and crew. According to a September 1959 Los Angeles Examiner news item, the battle scenes were filmed at the Columbia Ranch in Burbank, California.
Studio publicity materials add that Lisa Lu, who played "Madame Sue-Mei Hung" in the picture, recruited P. C. Lee, Leo Chen, Richard Wang and C. N. Hu, faculty members from the Army Language School, Chinese Mandarin Department, to appear in the film. According to a June 1959 LA Mirror-News news item, Frank A. Gleason, who served as a technical consultant on the film, was actually the head of the demolition crew on which Theodore White's novel was based. The July 1959 New York Times article added that White, who served as the Chinese Bureau Chief for Time magazine during World War II, originally interviewed Gleason for the magazine.