The Great Dictator the West was lost. Chaplin, on the other hand, laughed uproariously at the film. He used it to inspire many elements of "The Great Dictator", and by repeatedly viewing this film, Chaplin could closely mimic Hitler's mannerisms. Trimborn suggests that Chaplin decided to proceed with making "The Great Dictator" after viewing Riefenstahl's film. Hynkel's rally speech near the beginning of the film, delivered in German-sounding gibberish, is a caricature of Hitler's oratory style, which Chaplin also studied carefully in newsreels. The film was directed by Chaplin (with his half-brother Wheeler Dryden as assistant director), and written and produced by Chaplin.
The Great Dictator throughout 1938 and 1939, and began filming in September 1939, one week after the beginning of World War II. He finished filming almost six months later. The 2002 TV documentary on the making of the film, "The Tramp and the Dictator", presented newly discovered footage of the film production (shot by Chaplin's elder half-brother Sydney) which showed Chaplin's initial attempts at the film's ending, filmed before the fall of France. According to "The Tramp and the Dictator", Chaplin arranged to send the film to Hitler, and an eyewitness confirmed he saw it. Hitler's architect and friend Albert Speer denied that