Paul Bäumer
Com. Joseph Beckerman
Mandemus
Candy
Bill Atherton
Mr. Graham
Pierre Lassalle
Bob Sanderson
Louie Ricarno
Dr. Patrick J. Cory
Dr. Robert Richardson
Lin Vanner / Lindley Brown
Dr. Scott Elliott
Vaslovik
Ned Seton
Oliver Duffy
The Vice President
John Howard Tracy
Larry Wayne
Pat Gilbert
Dr. James Kildare
Larry Hannaford
Dr. James Kildare
Dr. James Kildare
President Charles Carter Durant
Dr. James Kildare
Dr. James Kildare
Dr. James Kildare
Dr. James Kildare
Dr. James Kildare
Dr. James Kildare
Bob Rawlston
Capt. Hunt
James Geoffrey 'Jimmy' Seymour
Billy Benson
Henry Twinkle
Jerry Flynn
Nick Milburn
Dr. Myron Brown
Bill McCaffrey
Kid Mason
Kent Murdock
Jerry Franklin
Eddie Burgess
Philip S. Griswold III
Caleb Enix
Noah Calvin
Henry Thayer
Sky Ames
Bill Dexter
Sam Thatcher
Hugh Fullerton
Doc
Self (archive footage)
Ronnie Gregory
Robert Marshall
Michael Rand
President Adar
Dr. Grayson
Norman Winthrop
Dr. Andrew Swanson
Copyboy (uncredited)
Bob Hollander
Sophomore Fraternity Brother (uncredited)
Prof. Dylan MacAuley
Larry Wilson
'Mac' McAllister
States
Himself
Dr. Sam Carpenter
Erik Landstrom
John Pace
Professor Cabel
Martin
Woodruff 'Woody' Davis
Tommy Graham
Narrator (voice)
Allen Dulles
Self
Edward Aloysius "Bucky" O'Brian
Cadet Frank Harrington
Jimmy Sterling
Eddie Howard
Mr. Ames
Noah
Chester aka Dynamite
Self
Lew Ayres
Self
(archive footage)
Self
Joe McKnight
actor 'Advise and 'Consent' (archive footage) (uncredited)
Dan Miller
The Governor
Jerry Brooks
Dr. John Mohler
Dr. Kildare
Sidney Dollinger
Howard Nicholson
Beaumont
Lorimar Henderson
Bernie Greene
Dr. Thomas Clay
Marshall Winslow
Carl Hooper
The Governor
Gus Bitterman
Andrew Douglas
Jonathan Cole
Dr. Kenneth Wilson
Judge John Markham
Henry Wade Culver
Bob Kilgore
Sheriff Roy Kingston
Max Braden
Oliver Hawthorne
Arthur
Clint Howard
Matt Needham
Jason Burke
Howard Moon
Dr. John Mohler
Dr. Paul Harris
Jason Fleet
Jud Lester
Jesse Martin
Dr. Elias Haig
Comm. Reginald Blackwell
President Adar