Brian Aherne
— Col. Duncan Grant
George Merritt
— Ulrich Muller
C.M. Hallard
— Commander-in-Chief
Frederick Lloyd
— Col. Jervois
B. Gregory
— Flight Commander Mayne
Mary Jerrold
— Frau Muller
Madeleine Carroll
— Rosa Hartmann
Clifford Heatherley
— Proprietor
Austin Trevor
— Captain of Military Police
Norah Howard
— Lady of the Town
Cameron Carr
— Otto Cedern
Milton Rosmer
— President of Court Martial
Alfred Drayton
— Prosecutor
Charles Paton
— Defence Counsel
Wilhelm König
— Prison Commandant