The main locations used for shooting the film were in and around Sarlat-la-Canéda in the Dordogne region of France.
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Their names were Dupont and Fournier-Sarlovèze, whom Conrad disguised slightly, changing Dupont into d'Hubert and Fournier into Féraud.
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Two years later, after Napoleon's exile to Elba, d'Hubert is a brigadier-general recovering from a leg wound at the home of his sister Leonie (Meg Wynn Owen) in Tours.
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However d'Hubert approaches the Minister of Police Joseph Fouché (Albert Finney) and persuades him to release Féraud (without revealing d'Hubert's part in his reprieve).
Dupont's series of duels fought against Fournier-Sarlovèze formed the basis for a Conrad short story which was adapted in turn by Ridley Scott in his first feature film as director, The Duellists in 1977.