as Harry Kallen

as Sam Moreland

as J. C. Grant

as Dr. P.J. 'Phil' Winston

as Kingsley Willis

as Sen. Bentley

as Mr. Henry Mercer

as Major Bailey

as Doctor Walter Morrison

as Police Chief Scott Anderson

as Dr. Willard

as Toomey

as Jonas Overmire

as Charles Gilbert

as Col. Hans Adamson

as Dr. Paul Renwick

as Col. Merian 'Steve' Cooper

as Inspector Huxley

as Phil Carson

as Dr. Cary Grayson

as Cmdr. William B. 'Bill' Goggins

as Self (segment 'Sergeant York') (archive footage)

as John Davidson

as District Attorney Stanley S. Harding

as Maj. Mallory - Clark Field

as Colonel Von Reichart

as Hansen

as Air Minister

as Martin T. Fleming, Attorney

as Professor Alexander Siletsky

as Kenneth Hanline

as Maj. Romulus Taipe

as Major Buxton

as District Attorney Tom F. Winton

as Johnson

as Prof. George Kingsley / Red Cannon

as Doctor Frankton (as Stanley C. Ridges)

as Hamilton Peyton

as Charles 'Charlie' Garreth

as Mueller

as Downs (uncredited)

as Gen. Casement

as Earl Brennan / Dave Talbot

as District Attorney

as Tony Croy

as Edward Norris

as Rene de Montigny

as Dr. John Pritchard

as Dr. James Carroll

as Dan Innes

as MacKelvey

as Shadow

as Paul Decker

as Eddie White

as

as George

as Gilbert Gordon