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...
Donald O'Connor
as Peter Stirling
Patricia Medina
as Maureen Gelder
Zasu Pitts
as Valerie Humpert
Ray Collins
as Colonel Hooker
John McIntire
as General Stevens
Eduard Franz
as Colonel Plepper
Howland Chamberlain
as Major Nadel
James Todd
as Colonel Saunders
Robert Warwick
as Colonel Carmichael
Frank Faylen
as Sergeant Chillingbacker
Tony Curtis
as Captain Jones
Mikel Conrad
as Major Garber
