William Boyd as Hopalong Cassidy

Russell Hayden as Lucky Jenkins

George 'Gabby' Hayes as Windy Halliday

Judith Allen as Barbara Allen

Billy King as Boots

Alexander Cross as Black Jack Carson

Karl Hackett as Major McCready

Bob Kortman as Hawks

Jack Rockwell as Shorty

John Beach as Smokey

Ray Bennett as Brad

Philo McCullough as Jordan

Ben Corbett as Fort Guard

Jim Corey as Henchman

Earle Hodgins as Major Jordan

John Judd as Army Lieutenant

Clyde Kenney as Courier

Leo J. McMahon as Army Corporal

Buck Morgan as Hoppy Man

Cliff Parkinson as Henchman

John Power as Fort Cook