James Cagney as Sean Lenihan

Don Murray as Kerry O'Shea

Dana Wynter as Jennifer Curtis

Glynis Johns as Kitty Brady

Michael Redgrave as The General

Sybil Thorndike as Lady Fitzhugh

Cyril Cusack as Chris Noonan

Marianne Benet as Mary Madigan

John Breslin as Timmy McGrath

Harry Brogan as Tom Cassidy

Richard Harris as Terence O'Brien

William Hartnell as Sergeant Jenkins

John Le Mesurier as British General

Niall MacGinnis as Michael O'Leary

Ray McAnally as Paddy Nolan

Patrick McAlinney as Donovan

Clive Morton as Sir Arnold Fielding

Noel Purcell as Liam O'Sullivan

Peter Reynolds as 'Black & Tans' Captain

Walter Gotell as 'Black & Tans' Sergeant

Robert Brown as First Sergeant 'Black & Tans'

Lewis Casson as Judge

Christopher Casson as Brigadier

John Cairney as Mike O'Callaghan

Harry H. Corbett as Clancy

Eileen Crowe as Mrs. Madigan

Allan Cuthbertson as Captain

Donal Donnelly as Willie Lafferty

Wilfred Downing as Tommy Connor

Eithne Dunne as Eileen O'Leary

Paul Farrell as Doyle

Christopher Rhodes as Colonel Smithson

Ronnie Walsh as Sergeant 'Black & Tans'

Alan White as Captain Fleming

Eamonn Andrews as Narrator (voice) (uncredited)

Norman Rodway as Sergeant at HQ (uncredited)

Godfrey Quigley as Soldier (uncredited)