Peter GravesDr. Ed Wainwright

Peggie CastleAudrey Aimes

Morris AnkrumGen. John Hanson

Than WyennFrank Johnson

Thomas Browne HenryCol. Tom Sturgeon

Richard BenedictCpl. Mathias

James SeayCapt. James Barton

John CloseMaj. Everett

Don C. HarveyState Police Car 254 Officer

Larry J. BlakeRoadblock Sergeant

Eilene JanssenWilliam's Date

Hyllton SocherFrank, grainary platoon soldier

Frank WilcoxGen. Short

Douglas EvansEditor Norman Taggart

Paul GrantWilliam Summerfield, teen boy

Richard EmoryLieutenant

Hank PattersonDave

Steve WarrenObservation Post #3 Soldier

Frank ConnorObservation Post #1 Soldier

Don EitnerObservation Post #2 Soldier

Rayford BarnesChuck, granary platoon soldier

Kirk AlynBomber Pilot

Bill Baldwin

Frank Chase

Joe Cranston

Patricia DeanRed Cross Representative

James Douglas

Paul FreesHelicopter Pilot (voice)

Lyle Latell

Dennis MoorePolice Dispatcher KLP646

Zon MurrayRoadblock Sentry Confiscating Camera

Alan ReynoldsAgricultural Agent

Ralph SanfordMan with Red Cross Representative [extra]

Bert StevensCol. Hill [bit]

Alan WellsHeadquarters Sergeant

Bert I. GordonDirector

Fred FreibergerScreenplay

Lester GornScreenplay