George MacKay as Lance Corporal Schofield

Dean-Charles Chapman as Lance Corporal Blake

Mark Strong as Captain Smith

Andrew Scott as Lieutenant Leslie

Richard Madden as Lieutenant Blake

Claire Duburcq as Lauri

Colin Firth as General Erinmore

Benedict Cumberbatch as Colonel MacKenzie

Daniel Mays as Sergeant Sanders

Adrian Scarborough as Major Hepburn

Chris Walley as Private Bullen

Nabhaan Rizwan as Sepoy Jondalar

Jamie Parker as Lieutenant Richards

Tommy French as Private Butler

Paul Tinto as NCO Baker

Billy Postlethwaite as NCO Harvey

Richard McCabe as Colonel Collins

Justin Edwards as Captain Ivins

Pip Carter as Lieutenant Gordon

Andy Apollo as Sergeant Miller

Josef Davies as Private Stokes

Gabriel Akuwudike as Private Buchanan

Spike Leighton as Private Kilgour

Robert Maaser as German Pilot

Gerran Howell as Private Parry

Adam Hugill as Private Atkins

Benjamin Adams as Sergeant Harrop

Anson Boon as Private Cooke

Kenny Fullwood as Private Rossi

Ryan Nolan as Private Malky

Elliot Baxter as Private Sniper

Kye Mckee as German Soldier

Ivy-I Macnamara as French Baby

Merlin Leonhardt as Soldat Muller

Taddeo Kufus as Soldat Baumer

Jos Slovick as Wayfaring Stranger Soldier

Luke Hornsby as Private Pinwood

Jack Shalloo as Private Seymour

Elliot Edusah as Private Grey

Jacob James Beswick as Lance Corporal Duff

Michael Jibson as Lieutenant Hutton

Ian Wilson as Sergeant Wright

Bradley Connor as Sergeant Gardner

John Hollingworth as Sergeant Guthrie

Michael smith as Orderly Dixon

Jonny Lavelle as Orderly Byrne

Michael Rouse as Captain Rylands

Richard Dempsey as Mackenzie Officer

Phil Cheadle as Mackenzie Officer

Jonah Russell as Captain Morahan

Daniel Attwell as Captain Sandbach

Joe Anders as Private Willock (as Joe Mendes)

Bogdan Kumšackij as German Sniper

Oliver Simms as Attacking Soldier (uncredited)