Sal Mineo
— Luigi J. Maresi
Christine Carère
— Marie
Barry Coe
— Jerry Morgan
Barbara Eden
— Sgt. Katie Mulligan
Gary Crosby
— Mike Conroy
Terry Moore
— Louise Wright
Jim Backus
— Jim Gordon
Jessie Royce Landis
— Elizabeth T. Chapman
Robert Burton
— Gen. Charles E. Hargrave
Alan Hewitt
— Maj. R.C. Hanley
Bob Denver
— MacIntosh
Tige Andrews
— Sgt. Pickerell
Ray Montgomery
— Capt. Hickman
Rudolph Anders
— Dr. Leyden
Debbie Joyce
— Magdalena
Bess Flowers
— Surgeon General's Wife
Paul Comi
— Military Policeman
Miranda Jones
— Secretary