Vice and Virtue
Le vice et la vertu (original)
1944 : Occupied France. Juliette (Vice) is Wehrmacht General Bamberg's mistress and enjoys a privileged life. Her younger sister Justine (Virtue) is about to marry Jean who is in the Resistance and come to Juliette for help. Both sisters end up at "la Commanderie", where Juliette becomes SS Colonel Schonberg's mistress and Justine is detained with other pretty girls who must satisfy the sexual needs of high-ranking nazi officials. Inspired by "Justine ou les infortunes de la vertu" by the marquis de Sade
Starring Annie Girardot, Catherine Deneuve, Robert Hossein, O.E. Hasse, Philippe Lemaire, Luciana Paluzzi, Valeria Ciangottini, Paul Gégauff, Astrid Heeren, Serge Marquand
Watch "Vice and Virtue" on Kanopy released in 1963. It's a comedy and drama movie, and has a rating of 6 out of 10 from Imdb which is fairly okay for this kind of movie.