Although the film lionizes the Nationalist Army of Chiang Kai-Shek, a frequent leitmotif in the film's soundtrack is "The Song of the Volunteers", a Communist marching song that would become the national anthem of the People's Republic of China after Mao Zedong won the Chinese Civil War in 1949.
The film mentions the "Tanaka Memorial" several times as being a document mapping out the proposed Japanese conquest of China, and eventually the United States (the document itself does not mention conquest beyond China). When this film was produced the Tanaka Memorial was accepted as factual, however there is no evidence it was produced by the Japanese. It was first published in 1929 in China, and is generally accepted as a well written anti-Japanese hoax.