During World War II, a junior American Army officer, Lt. Peter Stirling, gets sent to the psychiatric ward whenever he insists that an Army mule named Francis speaks to him.
             
                        
            
                                
                                
                                
                    Cast: Donald O'Connor, Patricia Medina, Zasu Pitts, Ray Collins, John McIntire, Eduard Franz, Howland Chamberlain, James Todd, Robert Warwick, Frank Faylen