 Cameron MitchellGeneral Wallace | General Wallace |
 William ShatnerCol. Chipman | Col. Chipman |
| JJack CassidyOtis Baker | Otis Baker |
 Martin SheenCaptain Williams | Captain Williams |
 Richard BasehartHenry Wirz | Henry Wirz |
 Woodrow ParfreyLouis Schade | Louis Schade |
 Whit BissellDoctor Ford | Doctor Ford |
 Buddy EbsenDr. John Bates | Dr. John Bates |
 John AndersonAmbrose Spencer | Ambrose Spencer |
 Dick MillerSketch Artist | Sketch Artist |
 Wright KingMajor Hosmer | Major Hosmer |
 Harry TownesCol. Chandler | Col. Chandler |
 Lou FrizzellJasper Culver | Jasper Culver |
 Michael BurnsJames Davidson | James Davidson |
 Albert SalmiJames Gray | James Gray |
 Dal McKennonFirst Guard | First Guard |
| NNino CandidoSecond Guard | Second Guard |
 William BryantThe Lieutenant | The Lieutenant |
 Ray StricklynCourt Clerk | Court Clerk |
 Robert EastonCourt Reporter | Court Reporter |
 Philip BourneufBoard of Military Judges | Board of Military Judges |
 Bert FreedBoard of Military Judges | Board of Military Judges |
 Alan Hale Jr.Board of Military Judges | Board of Military Judges |
 Charles McGrawBoard of Military Judges | Board of Military Judges |
 Ford RaineyBoard of Military Judges | Board of Military Judges |
 Kenneth TobeyBoard of Military Judges | Board of Military Judges |
 Ian WolfeBoard of Military Judges | Board of Military Judges |
 George C. ScottSelf | Self |
