http://www.dvdtalk.com/dvdsavant/s4448sodo.html
In some reference sources, Italian Sergio Leone was erroneously listed as a co-director of The Last Days of Sodom and Gomorrah. According to interviewer Pierre Sauvage's account in Alain Silver and James Ursini's book What Ever Happened to Robert Aldrich? Leone was an assistant director only briefly. Aldrich visited the second unit, found nothing happening and Leone "loafing", and fired him on the spot. Although Leone was known to embellish his accomplishments to interviewers, so did most everyone else in movies...