- Kenneth Tobey - Sergeant Baker
- Sharon Farrell - Pam Canford
- Don Marshall - Pvt. Ernest Cameron
- John Doucette - Sgt. Clintock
- Harold Gould - Lt. Col. Raleigh Wade
- John Milford - Sgt. Ben Kagey
- Jeremy Slate - Lt. Virgil Scott Boxer
- Dennis Hopper - Cpl. Peter Devlin
- Rip Torn - Sgt. Karl Kasten
- Henry Beckman - Major Al Barker
- Majel Barrett - Ruth Donaldson
- Conrad Nagel - Admiral Terence Havener
- Danny Lockin - Bellhop
- Nichelle Nichols - Norma Bartlett
- Woody Strode - Sgt. Logan Holt
- Madlyn Rhue - Jackie Madian
- John Hart - Capt. Adam Quincy
- Rita Lynn - Social Worker
- James Drake - Intern
- Fletcher Fist - M.P. Officer
- Neva Patterson - Vera Delwyn
- Walter Koenig - Sgt. John Delwyn
- Hal Taggart - Observer at Rally (uncredited)
- Sherry Jackson - Maggie Shea
- Strother Martin - Taxi Driver
- Ray Teal - Mr. Coolidge
- Kitty Kelly - Housekeeper
- Tom Nardini - 1st Private
- George O'Hanlon - Jeweler
- Eddie Carroll - Pvt. Z. Wesley Martin
- Gary Pagett - Pvt. Lester Baxter
- Mike Minor - Radio Operator
- Chris Hughes - 1st Boy
- Linda Evans - Nan Hiland
- Yale Summers - Lt. Barry Everest
- Steve Franken - Sampan
- Susan Silo - Marie Eckles
- Stuart Margolin - Cpl. Merle Purveau
- Ina Balin - Jan Everest
- Barbara Babcock - Doris Broxton
- Mario Roccuzzo - Jeep Driver
- Mario Roccuzzo - Pvt. Brian Barducci
- John Dennis - Major
- Bill Bixby - Pvt. Stu Sallaway
- Russell Thorson - Mr. Sallaway
- Richard Anderson - Col. Clinton Hiland
- Richard Anderson - Lt. Col. Clinton Hiland
- Katharine Ross - Elizabeth Sharp
- Penny Santon - Mrs. Gorson
- Dorothy Neumann - Alice Lanyard
- Greg Morris - Crew Chief
- Greg Morris - Sgt. Perc Linden
- Andrew Prine - Lt. Gerald Allison
- Pat Priest - Waitress
- Marlyn Mason - Carol Jean Wandemeyer
- Andrew Duggan - Peter Bonney
- Martine Bartlett - Stella Bonney
- Russ Conway - Col. Curtis Morley
- Leonard Nimoy - Gregg Sanders
- George Cisar - Jerry Walters
- Paul Burke - Capt. Kenneth Thomson
- Lisabeth Hush - Mrs. Thomson
- Carmen Phillips - Lily
- Norman Felton
Leonard Nimoy interpreta a Gregg Sanders en la serie.
Nichelle Nichols hace el papel de Norma Bartlett.
Dennis Hopper hace el papel de Cpl. Peter Devlin.
Majel Barrett hace el papel de Ruth Donaldson.
Gary Lockwood interpreta a Lt. William 'Bill' Rice en la serie.
Robert Vaughn interpreta a Captain Ray Rambridge en la serie.
Capítulo disponible en las siguientes plataformas:
