Located near Munich, this was one of the oldest camp and considered a model for training SS guards. It was opened in 1933 for political prisoners, including Jehovah's Witnesses, homosexuals, communists, Sinti, Roma, and anyone else the Nazis considered "enemies of the Reich." They were used for forced labor in munitions industries. Dachau was also the chief camp to house clergy who did not conform to the party line. In all, 2,720 clergy from all over Europe were interned, mostly catholic priests; although Greek Orthodox, Mariavites, and Muslims were also among them. Records indicate 1,034 of them died. The camp was liberated in April 1945 by units of the US Army. An Inspector General Investigation reported that some US troops as well as former inmates mistreated and/or killed some of the German guards. Military authorities considered courts-martial for those involved, however, General George S. Patton, as military governor of Bavaria, dismissed the charges.  Link.