Dachau concentration camp was made in order to hold the political prisoners. It was opened back in 1933.
It can be assumed from the evidence that was researched by Guido Fackler, the Nazi used to reeducate the political prisoners by making them listen to Wagner's music by exposure to national music.
Source: Wikipedia
The initial official concentration camp was set up by Heinrich Himmler within 90 days of their (Nazi’s) coming into power. The set up was held in March 1933 at Dachau.
Source: Wikipedia
The higher authority quartered the battalion of Adolf Eichmann at barracks which were close to Dachau concentration camp. The battalion was assigned to the Deutschland Regiment.
Source: Wikipedia