Question: What is the name of the predecessor to the Nazi Party which included Ernst Julius Günther Röhm as a member, a close friend and early ally of Adolf Hitler and whose sexual encounters are written about in the novel 'The Vengeance of Rome'? 
Sentence (from "The Vengeance of Rome"): The Vengeance of Rome (2006) is a novel by Michael Moorcock.
Relevant evidence: Yes