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Although a print of this film was viewed, some credits were taken from a dialogue continuity deposited with copyright records. In those credits set dresser Glenn P. Thompson's name was misspelled as "Glen F." The film opens with the following written dedication: "Dedicated to the heroes of the United States and Philippine Armed Forces, and the American Red Cross." The film closes with a poem about Corregidor written and narrated by English poet Alfred Noyes. According to Hollywood Reporter news items, the filmmakers hoped to have Broadway star Alfred Lunt recite Norman Rosten's poem "Corregidor" in the film.
In a modern interview, Edgar G. Ulmer, who co-wrote the screenplay, stated that he was initially scheduled to direct the film, but was reassigned before production began. Hollywood Reporter news items add the following information about the production: Peter R. Van Duinen's new company Atlantis Pictures Corp. was supposed to produce Corregidor as part of a four-picture deal with Producers Releasing Corporation. Neither Van Duinen nor Atlantis are credited onscreen or in the dialogue continuity, however, and no additional information has been found to clarify Van Duinen's association with the film. Later news items reported that Atlantis split from PRC's distribution company in 1943. Paul Kelly was considered for a lead role in the picture. Some scenes were shot on location at Sherwood Lake, CA. The film's release was postponed for almost a month to allow additional work on the picture.