Himmler's camps
- In march 1933, Himmler introduced the first concentration camps in Dachau.
- He used a system of: victim isolation, strict and elaborate roll calls and checkups, fear and force to ensure obedience, and strict discipline for the guards (Not to be confused with the officers).
- In 1942 the gas chambers were tested with Zyklon B as the chemical.
- An estimated 11 million people were killed in at least 6 in a half years.