Here's what i think is correct to detail...(Please forgive my spelling on german words >.<)
Early Reich
There were two major public groups once Hitler became chancelor. The Sturmabteillungen (SA) and the Schutzstaffel (SS). The SA were the country's bullyboys, fanaticals running around spreading the Nazi beliefs by beating up jews and burning shops. However, the military always maintained a political power. When the military learned the SA wanted the right to bear arms, they panicked and went to Hitler for help. He agreed to eliminate the SA, but in return the SS would then have the right to bear arms. So after the night of the long knives, or during, the leader of the SA Röhm was killed by the SS.
Rank structure
The first group in the SS were the Allgemeine. These were the model SS troops, mainly just marching on streets making the uniform and group look good to the public. After this, the Sicherheitsdienst became the SS secret security headquarters. Later on, Himmler would combigne the Sicherheitsdienst with the Sichrhetspolizei and form the Reichssicherheitshauptamt (RSHA). This became the Reich HQ. From here, other divisions were made such as Totenkopfverbände. Along side them, Einsatzgruppen and the Gestapo worked together to round up and dispose of unwanted people.
Cont
The peoples group was the Verfügungstruppe. This was the political SS and worked in streets and cities alongside the police. Hitler had his own personal bodyguards known as Leibstandarte. These troops were loyal to Hitler and followed him. Leibstandarte, was part of 4 Waffen-SS divisions, Leibstandarte, Deutschland, Der Führer and Germania.
