Henry Fonda

The President

Walter Matthau

Prof. Groeteschele

Fritz Weaver

Col. Cascio

Larry Hagman

Buck

Frank Overton

Gen. Bogan

Edward Binns

Col. Jack Grady

Dan O'Herlihy

Brig. Gen. Warren A. Black

William Hansen

Defense Secretary Swenson

Russell Hardie

Gen. Stark

Janet Ward

Helen Grady

Dom DeLuise

TSgt. Collins

Russell Collins

Knapp

Sorrell Booke

Congressman Raskob

John Connell

Thomas

Hildy Parks

Betty Black

Dana Elcar

Foster

Louise Larabee

Mrs. Cascio

Geri Miller

Go-go Dancer (uncredited)

Charles Tyner

Jet Fighter Pilot (voice) (uncredited)

Will Wright

Bit Part (uncredited)