The Soul of France (La Grande Épreuve) is a French synchronized sound black and white sound film, directed by André Dugès and Alexandre Ryder, with a screenplay by Georges Le Faure. The film was released and distributed by Paramount Pictures in 1928. The film has no audible dialogue but featured a synchronized musical score and sound effects. The soundtrack was recorded by Paramount Pictures using the Western Electric Sound System sound-on-film process. The soundtrack was also transferred to discs for those theatres that were wired with sound-on-disc sound systems.

The film is an adaptation of the eponymous novel by Georges Le Faure, which won the Marcelin-Guérin Prize in 1929. The film starred Georges Charlia, Michele Verly, Jean Murat and Berthe Jalabert.