John Clements
— Milos Petrovitch
Tom Walls
— Kossan Petrovitch
Rachel Thomas
— Maria Petrovitch
Stephen Murray
— Dr. Stephan Petrovitch
Mary Morris
— Anna Petrovitch
Godfrey Tearle
— General von Staengel
Robert Harris
— Col. Von Brock
Michael Wilding
— Constantine
Charles Victor
— Sergeant
Niall MacGinnis
— Dr. Jordon
Ivor Barnard
— Station Master
Ben Williams
— Dragutin
George Merritt
— A Yugoslav General
Stanley Baker
— Petar
Tecwyn Jones
— Danilo
Eynon Evans
— Lieut. Banse
Norman Pierce
— Lieut. Franke
Eric Micklewood
— Lieut. Von Klotz
Finlay Currie
— Priest (uncredited)
Gina Evans
— Woman (uncredited)
Herbert Lomas
— Schoolteacher (uncredited)
John Slater
— Minor Role (uncredited)
Brynmore Thomas
— Minor Role (uncredited)
John Wynn
— Yugoslav Soldier (uncredited)