Richard Basehart as Cpl. Denno

Gene Evans as Sgt. Rock

Michael O'Shea as Sgt. Lonergan

Richard Hylton as Medic John Wheeler

Craig Hill as Lt. Gibbs

Skip Homeier as Whitey

Howard Banks as Doggie (uncredited)

Paul Burke as Doggie (uncredited)

George Conrad as Zablocki (uncredited)

Glenn Corbett as Lieutenant (uncredited)

James Dean as Doggie (uncredited)

John Doucette as 18th Infantry Colonel (uncredited)

John Drexel as John (uncredited)

Pat Hogan as Jonesy (uncredited)

Tony Kent as Mainotes (uncredited)

Robert Knapp as Chuck (uncredited)

Henry Kulky as Vogl (uncredited)

Weaver Levy as Communist Tank Leader (uncredited)

George Lynn as 26th Infantry Colonel (uncredited)

Herbert Lytton as Army Doctor (uncredited)

Richard Monahan as Walowicz (uncredited)

Neyle Morrow as Medic (uncredited)

Wyott Ordung as Fitz (uncredited)

Don Orlando as Borcellino (uncredited)

John Pickard as Vic (uncredited)

Mel Pogue as Bulcheck (uncredited)

Stuart Randall as Major General at Headquarters (uncredited)

Paul Richards as Ramirez (uncredited)

Robert Stevenson as Col. Taylor - 16th Infantry (uncredited)

William Thourlby as Husky Doggie (uncredited)

Joe Turkel as Soldier (uncredited)