Ray Collins
Top Polk
Whittier
as Rodion Pavlov
William L. Morgan
Armand Louque
Prospector
Dr. Hubert Van Der Mal
Jimmy Noble
Paul Baxter
Grant
Dr. Land
General Waverly
Dr. Adam Royston
Admiral Fitch
Sala Post
Police Capt. Michaels
Captain Garvey
Tim Horn
Justus
Sheriff Ned Logan
John Noble
Chad Harmon
Jesse Q. Grimm
Yancy
Edward Creighton
Major / Lieutenant Colonel Harvey Stovall
Highwayman
Cliff Holden, alias William Harrah
Charlie (uncredited)
Mr. Fisher
Kevin Connors
Top Harmon
Dan Jefferson
Brigham Young
Josiah Lowe
Harry Burleigh
Sgt. John Patterson
Philip Carleton
Dr. Steve Webster
Adam Larey
Jeff Hassard
Alan Shaw
J. Fullerton Weldy
Judge James C. Brown
Jade Murphy
Charlie Sears
General William J. Palmer
Doctor Schaeffer
Mr. Wyndham
Sam Quade
John Masters
Jim Sawyer
Dr. Hugo Thornton
Military School Instructor
James 'Capper' Regan
John W. Rogers
Trooper Jim Burton
Hap Waller
Jim Wallace
Vice-Adm. Thomas L. Semple
Phil Baxter
Koehler
Matthew Keller
Rodion Pavlov
Dillman
Paul Herrick
Fred Stevens
Carl Webster
Jones
Colonel Baseman
Pete
Grant Austen
Arnold
Warden Auerbach
'Honey' Hogan
Bob O'Ryan
'Pipestone' Ross
Torgut Lane
David Gibson
Deputy (uncredited)
Dr. Shagetz
Fritz Lind
Anton Rojas
Sam Baldwin
Coach Robbins
Frederick Wellman
Arnold Edgarton
6th Supreme Court Justice
Major General Thomas F. Waverly (archive footage) (uncredited)
Charles Van Cleve
Slade
Bill Trask
Thurman
Jim Coakley
Walter Cannell
Henry Raphael Caine
Bishop John Atwood
Ben Willson
Adam 'Mister Doc' Darrow
6th Supreme Court Justice
Ed Lindsay
Professor Bowen
Tony Donovan
John Straley
Ed Gorman
Charles Burnett
Principal Albert Vane
Bert Ensign
Lt. Gen. John Sparrow
Harry Holt
George Davies