Set up in 1925, the blackshirted SS were originally Hitler's personal bodyguards
Gradually, the group, led by Himmler, was built up over the years to become the most feared organisation in the country
SS members were tall, strong, athletic, and totally loyal to Hitler
Over time, the SS were divided into three sections:
The SD looked after 'security' - they could arrest anyone for any reason, search homes and seize property. They even spied on and policed the Nazi Party itself
The Waffen SS were an elite unit in the army
The Death's Head Units ran the concentration camps, and later, the death camps