"The Damned" is an entertaining soap opera concerning the destruction of a German Industrial family during the early years of Hitler's consolidation of power. There are many very good performances in this movie such as Dirk Bogarde, Ingrid Thulin, Helmut Greim, Charlotte Rampling (seen in the recent Swimming Pool), and especially Helmut Berger who is evil personified as Martin Von Essenbeck. Luchino Visconti directs the movie with operatic opulence though there are a few sections in the movie that tends to slow to a crawl. Despite these moments, you will find yourself immersed in a compelling story. I have to agree with other reviewers who are critical of the sound, as I occasionally activated the subtitles to catch what was being said.
Finally, regarding whether or not The Damned has in fact been edited to an R rating. I saw this movie in a theater when it was first released, and while I will concede that my memory may be flagging, I honestly do not recall any scene that has been trimmed. I believe that the X rating in 1969 is a reflection of the moral standards of the period. This movie includes issues of rape, pedophilia, and incest which were taboo in movies during this period. Think of the landmark X rated movies such as "Last Tango in Paris", and "I am Curious Yellow". In both cases, seen by today's rating standards, these two movies only warrant an R rating. I believe "The Damned" falls into the same category.