The truthful soldier Stirling didn't know how to lie about his source of information, the talking army Mule, Francis, so he was treated as a lunatic and led to one after another hilarious situations, where the mule was the only one that appeared in his right mind. In the process of all this, the mule assisted in uncovering a spy, Mareen, who pretended to be lost among the jungles, but was actually...
| Directing | Arthur Lubin | Director |
| Writing | David Stern | Novel |
| Writing | David Stern | Screenplay |
| Editing | Milton Carruth | Editor |
| Production | Robert Arthur | Producer |
| Sound | Frank Skinner | Music |
| Camera | Irving Glassberg | Director of Photography |
| Art | Bernard Herzbrun | Art Direction |
| Art | Richard H. Riedel | Art Direction |
| Art | A. Roland Fields | Set Decoration |
| Art | Russell A. Gausman | Set Decoration |
| Costume & Make-Up | Rosemary Odell | Costume Design |
| Costume & Make-Up | Joan St. Oegger | Hairstylist |
| Costume & Make-Up | Bud Westmore | Makeup Artist |
| Sound | Leslie I. Carey | Sound |
| Sound | Corson Jowett | Sound |
| Crew | David S. Horsley | Special Effects |
| Writing | Joan Hathaway | Dialogue |
| Crew | M.H. Lencer | Technical Advisor |
