Peter Graves

Dr. Ed Wainwright

Peggie Castle

Audrey Aimes

Morris Ankrum

Gen. John Hanson

Than Wyenn

Frank Johnson

Thomas Browne Henry

Col. Tom Sturgeon

Richard Benedict

Cpl. Mathias

James Seay

Capt. James Barton

John Close

Maj. Everett

Don C. Harvey

State Police Car 254 Officer

Larry J. Blake

Roadblock Sergeant

Eilene Janssen

William's Date

Hyllton Socher

Frank, grainary platoon soldier

Frank Wilcox

Gen. Short

Douglas Evans

Editor Norman Taggart

Paul Grant

William Summerfield, teen boy

Richard Emory

Lieutenant

Hank Patterson

Dave

Steve Warren

Observation Post #3 Soldier

Frank Connor

Observation Post #1 Soldier

Don Eitner

Observation Post #2 Soldier

Rayford Barnes

Chuck, granary platoon soldier

Kirk Alyn

Bomber Pilot

Bill Baldwin

TV Announcer (uncredited)

Frank Chase

Helicopter Pilot (uncredited)

Joe Cranston

Soldier (uncredited)

Patricia Dean

Red Cross Representative

James Douglas

Army Sentry (uncredited)

Paul Frees

Helicopter Pilot (voice)

Lyle Latell

Police Lt. MacKenzie (uncredited)

Dennis Moore

Police Dispatcher KLP646

Zon Murray

Roadblock Sentry Confiscating Camera

Alan Reynolds

Agricultural Agent

Ralph Sanford

Man with Red Cross Representative [extra]

Bert Stevens

Col. Hill [bit]

Alan Wells

Headquarters Sergeant