Gregory Peck

Douglas MacArthur

Ivan Bonar

Lt. Gen. Richard K. Sutherland

Ward Costello

Gen. George C. Marshall

Nicolas Coster

Colonel Sidney Huff

Marj Dusay

Jean MacArthur

Ed Flanders

President Harry S. Truman

Warde Donovan

General Shepherd

Branscombe Richmond

Korean Soldier

Jerry Holland

Aide

Art Fleming

The Secretary

Russell Johnson

Admiral King

Sandy Kenyon

General Wainwright

Robert Mandan

Representative Martin

Allan Miller

Colonel Diller

Dan O'Herlihy

President Roosevelt

Dick O'Neill

Colonel Whitney

Addison Powell

Admiral Nimitz

Tom Rosqui

General Sampson

G. D. Spradlin

General Eichelberger

Kenneth Tobey

Admiral Halsey

Garry Walberg

General Walker

Barry Coe

Television Reporter

Charles Cyphers

General Harding

Manuel DePina

Prettyman

Jesse Dizon

Castro

Philip Kenneally

Admiral Doyle

John McKee

Admiral Leahy

Gerald Peters

General Blamey

Eugene Peterson

General Collins

Beulah Quo

Ah Cheu

Alex Rodine

General Derevyanko

Yuki Shimoda

Prime Minister Shidehara

Fred Stuthman

General Bradley

Harvey Vernon

Admiral Sherman

William Wellman Jr.

Lieutenant Bulkeley

John Fujioka

Emperor Hirohito

Robert V. Barron

POW (uncredited)

John Fujioka

Emperor Hirohito (uncredited)

Arthur Godfrey

Self (archive sound) (uncredited)

Bob Harks

Reporter (uncredited)

Evan C. Kim

Major Akio Sakud (uncredited)

Lloyd Kino

Japanese Administrative Assistant (uncredited)

Branscombe Richmond

Korean Soldier (uncredited)

Shane Sinutko

Douglas (uncredited)