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.
Hopalong Cassidy
Lucky Jenkins
Windy Halliday
Barbara Allen
Boots
Black Jack Carson
Major McCready
Hawks
Shorty
Smokey
Brad
Jordan
Fort Guard
Henchman
Major Jordan
Army Lieutenant
Courier
Army Corporal
Hoppy Man
Henchman
Fort Cook
