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Although a September 16, 1942 Hollywood Reporter news item stated that Twentieth Century-Fox had acquired the "forthcoming magazine serial" Bomber's Moon by Leonard Lee, contemporary sources indicated that Lee's original story was unpublished. According to Hollywood Reporter news items, Robert Florey was originally scheduled to direct the picture but instead shot second unit footage. A modern source notes that Florey was responsible for the aerial combat sequences. The name of the credited director, "Charles Fuhr," was a composite pseudonym for Edward Ludwig and Harold Schuster. According to Hollywood Reporter news items, filming began under Ludwig's direction, with John Brahm filling in for two days while Ludwig was away. When Ludwig sprained his ankle in mid-February 1943, Schuster took over the production, and also directed retakes and additional scenes shot in April 1943. As noted in the Hollywood Reporter review, Ludwig and Schuster each directed "an approximate half of the picture," and after completion, both felt "that the other rated first mention [so] a compromise was effected" by adopting the credited pseudonym. Although dialogue director Robert Lewis substituted for an ill actor who was scheduled to play a priest, his appearance in the finished film has not been confirmed.
February 1943 studio press releases list Kenneth Brown in the role of "Karl" and Gretl Dupont as "Elsa," but those roles were performed in the released picture by Leon Tyler and Edith Evanson, respectively. Another studio publicity statement reported that radio actor Bob Bailey would be making his screen debut in the picture as "Lt. Danny Dakin," but that part was played by Richard Graham. William Edmunds and Henry Guttman are included in the cast by a press release and a Hollywood Reporter news item, but their appearance in the completed picture has not been confirmed. Although a January 14, 1943 Hollywood Reporter news item stated that Ludwig had selected two location sites in the San Fernando Valley, CA, it has not been confirmed that the sites were used. George Montgomery, who entered the Army after completing Bomber's Moon, did not appear in another film until the 1946 Twentieth Century-Fox production Three Little Girls in Blue.