Between 1933 and 1945, Nazi Germany established about 20,000 camps to imprison its many victims. Concentration camps were used for forced-labor camps, Transit camps served as extermination camps built primarily or exclusively for mass murder of innocent people. From its rise to power in 1933, the Nazi regime built a series of detention facilities to imprison and eliminate so-called "enemies of the state." Many methods were used in the extermination camps. One of the most used ways of torture was the gas chamber, where the Germans suffocated the prisoners with a deadly gas that killed them if they breathed it in.
