Prince Luitpold
Colonel Skimmel
Capt. Kreuger
conte Roskoff
Maj. Skorch
Lieutenant Hapke
Colonel Kleist
General Schwartz
Mr. Bishop
Ernest Ward
Col. Blackgrave
Major Lloyd
Lawrence Blackman
Baron von Schulenberg
Coleman (as Gerard Haerther)
Mr. Silver
Colonnello comandante (uncredited)
German officer
Captain del Sommergibile
Col. von Elm
Hippia
Capitano Austriaco
Max Gunther
Prince Sergei Vorontzov
