Halbert Brown as Ambassador James W. Gerard

Willard Dashiell as Sir Edward Goschen

Louis Dean as Kaiser Wilhelm II

Earl Schenck as Crown Prince of Germany

George Ridell as Field Marshal von Hindenburg

Frank Stone as Prince Henry of Prussia

Karl Dane as Chancellor von Bethmana-Hollweg

Fred Hearn as Foreign Minister von Jagow

Percy Standing as Undersecretary Zimmerman

William Bittner as Grand Adm. von Tirpitz

Arthur C. Duvel as Field Marshal von Falkenhayn

Anne Dearing as Aimee Delaporte

A.B. Conkwright as Socialist

William Nigh as Socialist