
The U.S. Army needs more horses for the Spanish-American War. Hoppy must turn his Bar 20 cowhands into Rough Riders to gather up the horses, and of course bad guys try to sabotage the operation.

as Hopalong Cassidy

as Lucky Jenkins

as Windy Halliday

as Barbara Allen

as Boots

as Black Jack Carson

as Major McCready

as Hawks

as Shorty

as Smokey

as Brad

as Jordan

as Fort Guard

as Henchman

as Major Jordan

as Army Lieutenant

as Courier

as Army Corporal

as Hoppy Man

as Henchman

as Fort Cook