Dean Jagger

as Self (archive footage)

as Major General Thomas F. Waverly (archive footage) (uncredited)

as Doctor Schaeffer

as Slade

as 6th Supreme Court Justice

as Dr. Land

as Ray Collins

as Koehler

as Dr. Shagetz

as Josiah Lowe

as Frederick Wellman

as Carl Webster

as Arnold Edgarton

as Jim Wallace

as Warden Auerbach

as Matthew Keller

as Prospector

as Sam Baldwin

as Top Polk

as Highwayman

as Chad Harmon

as Judge James C. Brown

as Charles Van Cleve

as Jimmy Noble

as Whittier

as Colonel Baseman

as John Noble

as Sala Post

as Admiral Fitch

as Grant Austen

as William L. Morgan

as Dr. Hubert Van Der Mal

as Mr. Fisher

as Harry Burleigh

as Sheriff Ned Logan

as J. Fullerton Weldy

as as Rodion Pavlov

as Anton Rojas

as Philip Carleton

as Dr. Adam Royston

as Jade Murphy

as Dr. Hugo Thornton

as John W. Rogers

as Tim Horn

as Mr. Wyndham

as Vice-Adm. Thomas L. Semple

as General Waverly

as Police Capt. Michaels

as Jesse Q. Grimm

as Justus

as Dan Jefferson

as General William J. Palmer

as Phil Baxter

as Sam Quade

as Yancy

as Jeff Hassard

as Captain Garvey

as Major / Lieutenant Colonel Harvey Stovall

as Cliff Holden, alias William Harrah

as Grant

as Dr. Steve Webster

as Kevin Connors

as Sgt. John Patterson

as John Masters

as Paul Baxter

as Rodion Pavlov

as Torgut Lane

as 'Pipestone' Ross

as Jim Sawyer

as David Gibson

as Edward Creighton

as Brigham Young

as Charlie (uncredited)

as Charlie Sears

as Alan Shaw

as James 'Capper' Regan

as Dillman

as Paul Herrick

as Fred Stevens

as Bob O'Ryan

as 'Honey' Hogan

as Armand Louque

as Hap Waller

as Fritz Lind

as Bill Trask

as Trooper Jim Burton

as Thurman

as Agent Jones

as Top Harmon

as Adam Larey

as Arnold

as Pete

as Coach Robbins

as Military School Instructor

as Deputy (uncredited)

as Jim Coakley

as Gerald Morely

as Self (archive footage)

as David Domedion

as Professor Bowen

as Quick

as Henry Raphael Caine

as Walter Cannell

as Charlie

as Bishop John Atwood

as Tony Donovan

as Principal Albert Vane

as George Davies

as Lt. Gen. John Sparrow

as Ed Lindsay

as Bert Ensign

as Adam 'Mister Doc' Darrow

as Harry Holt

as 6th Supreme Court Justice

as Ed Gorman

as John Straley

as Charles Burnett

as Ben Willson