Original: Berchtold was then replaced by Erhard Heiden '' Racial requirements for membership The Nazis regarded the SS as an elite unit , the party 's '' Praetorian Guard , '' with all SS personnel ( originally ) selected on the principles of racial purity and unconditional loyalty to the Nazi Party .
Simplified: The Nazis saw the SS as an elite unit , the party 's '' Praetorian Guard , '' with all SS personnel selected on the principles of racial purity and unconditional loyalty to the Nazi party .