powered by AFI
The cast order differs between the opening and closing credits. Thomas G. Hubbard's onscreen credit reads: "Written by Thomas G. Hubbard, Associate Producer." A Hollywood Reporter news item of April 19, 1956 reported that producer-director Albert C. Gannaway intended to shoot The Badge of Marshal Brennan in Kanab, UT, in color and widescreen, but the film was released in black and white. A May 31, 1956 Hollywood Reporter news item stated that Gannaway was building a three-stage studio, as well as two western streets, on a three-thousand acre property in Kanab and intended to shoot The Badge of Marshal Brennan and another Western, The Gun and the Gavel there. The latter film, eventually released by Republic as Raiders of Old California, was shot immediately after The Badge of Marshal Brennan and utilized many of the same cast and crew. Apparently the Kanab stages were not ready in time to accomodate the films as a June 29, 1956 Hollywood Reporter news item indicated that Gannaway was shooting interiors for both films at the Cascade Studios in Hollywood.
Other Hollywood Reporter news items and production charts add Tom Black, Don Diamond and Ron McNeil to the cast, but their appearance in the released film has not been confirmed. Despite a December 3, 1956 Hollywood Reporter story that singer Marty Robbins would "record several songs from the film," only the song sung by Harve Presnell over the opening and closing credits appeared in the released film. Although Presnell did not appear in the film, The Badge of Marshal Brennan marked his first credit on a feature film. His first onscreen appearance was in the 1964 M-G-M release The Unsinkable Molly Brown (see AFI Catalog of Feature Films, 1961-70). Carl Smith, who played "Sheriff Carl Smith," was also a popular western singer. The film's music score was played exclusively on guitars.