The film "Die Unbesiegbaren" covers an episode in German history, in which the Bismarck government tried to mitigate the rise of the social-democrat movement.
Willy A. Kleinau
as Herr Schulz
Alice Treff
as Frau Schulz
Werner Peters
as Köppke
Karl Paryla
as August Bebel
Erwin Geschonneck
as Wilhelm Liebknecht
Harald Mannl
as Karl Frohme
Arno Paulsen
as Hauptmann Bullerjahn
Gerhard Bienert
as Wachtmeister Vogt
Norbert Christian
as Krause
Erna Sellmer
as Frau Becker
Agnes Kraus
as Frau Voigt
Wolf von Beneckendorff
as Herford
