James Daly
/ Major Gaylord / Rufus Jackson / Sergeant Pat Boyle / Mr. White / Deering / A ...

Charlton Heston
/ Col. / Dr. Michael Knowle / Heathcliff / Edward Rochester / James Otis / Mert...

John Forsythe
/ Pete Maynard / Judd / James Rexham / Capt. Sam MacKenzie / Maj. Peter Brook /...

John Cannon
Self - Announcer (voice)

Richard Kiley
/ Calvin / Joe / Edward Dean / Jim Colton / Julian Hurst / Fred Baxter / Merric...

Everett Sloane
/ Aaron Burr / Giovanni / Jonah Silver / Korolenko / Walter Winkworth / Ben Roy...

Leslie Nielsen
/ Edmund / Tallman / Dr. Clayborn / Karl / Mac / Chris Jackson / Stan Janicek /...

Betsy Palmer
/ Ann Meade / Edith Olmstead / Dony Waller / Maureen Drew / Mimi / Ellen Morris...

Berry Kroeger
Mr. Lawrence / Sir Sagramor / / Mr. Walkes / Rembrandt Van Rijn / Baron Tito Be...

Shepperd Strudwick
/ Hal Manning / Mac Taylor / Cassius / Senator Greet / Nordlund

Vaughn Taylor
Carlton Delafield / Billy / Casca / Doc / Prof. Henry Lempkin / / Admiral Luetj...

Harry Townes
/ Eliot Nelson / Karl Weber / Mr.Rogers / Mr. Hager / Peter Hartley / Outarist

Nina Foch
Barbara / Melissa Turner / Joyce / Belinda Cattson / Lee Fouche / / Carrie Brow...

E.G. Marshall
/ Harry Mork / Dr. Shratt / George Banks / Aaron Kinney / Everett Metcalf

Bramwell Fletcher
/ Dr. Alderton / Mr. Wynteringham / Governor Bell

Hildy Parks
Fran / Mabel Prentice / Judy McDermott / Doris Anderson / Avery Dow / Maggie Tro...

Charles Korvin
Paul Collins / Francis / Gastman / Julian Wilder / El Cameron / Philip Hausman /...

Skip Homeier
/ Peter Shea / The Boy / Theodore Jr. / Carl Green / Dickie Rogers / Capt. Gene...

James Gregory
Mr. Bales / James Metcalf / Gas Man / Corey / George Monzo / Mr. Black / Private...

Edward Andrews
Fistar Marrock / C. Elliot Friday / Henry Horne / Parker / Forest / / Nils