Political dissidents, trade unionists, and Social Democrats were among the first to be arrested and incarcerated in concentration camps. Under the Weimar government, centuries-old prohibitions against homosexuality had been overlooked, but this tolerance ended violently when the SA (Storm Troopers) began raiding gay bars in 1933. Homosexual intent became just cause for prosecution. The Nazis arrested German and Austrian male homosexuals—there was no systematic persecution of lesbians—and interned them in concentration camps, where they were forced to wear special yellow armbands and later pink triangles. The goal of persecuting male homosexuals was either for reeducation—what might now be called conversion therapy—or punishment. Jehovah’s Witnesses were a problem for the Nazis because they refused to swear allegiance to the state, register for the draft, or utter the words “Heil Hitler.” As a result, the Nazis imprisoned many of the roughly 20,000 Jehovah’s Witnesses in Germany. They could be released from concentration camps if they signed a document renouncing their faith and promising not to proselytize. Few availed themselves of that option, preferring martyrdom to apostasy. Germans of African descent—many of whom, called “Rhineland bastards” by the Nazis, were the offspring of German mothers and French colonial African troops who had occupied the Rhineland after World War I—were also persecuted by the Nazis. Although their victimization was less systematic, it included forced sterilization and, often, internment in concentration camps. The fear was that they would “further pollute” and thereby diminish the race. The Nazis also singled out the Roma and Sinti, pejoratively known as Gypsies. They were the only other group that the Nazis systematically killed in gas chambers alongside the Jews. For the Roma and Sinti, too, racial pollution and their depiction as asocials was the justification for their persecution and murder.
The liberated inmates had to be kept in the camp until the typhus epidemic could be brought under control. The Americans used DDT, a new insecticide not being used in Germany, to kill the lice in the camp. When the epidemic ended, the concentration camp was immediately turned into War Crimes Enclosure No. 1 for 30,000 Germans who had been arrested as war criminals and were awaiting trial by an American Military Tribunal. Most of them were released by 1948 for lack of evidence, although some were transferred to France for trial.
At the liberation of Dachau and its sub-camps in April 1945 about thirty percent of the camps inmates were Jewish. During its twelve –year existence Dachau was always a “political camp” , the political prisoners who had been there first and knew the conditions best, held most of the key positions in the so-called prisoners’ internal government, which had been established by the SS.
In the second phase of the evacuation, in April 1945, Himmler gave direct evacuation routes for remaining camps. Prisoners who were from the northern part of Germany were to be directed to the Baltic and North Sea coasts to be drowned. The prisoners from the southern part were to be gathered in the Alps, which was the location in which the SS wanted to resist the Allies. On 28 April 1945, an armed revolt took place in the town of Dachau. Both former and escaped concentration camp prisoners, and a renegade Volkssturm (civilian militia) company took part. At about 8:30 am the rebels occupied the Town Hall. The advanced forces of the SS gruesomely suppressed the revolt within a few hours.
In 1935 the Wehrmacht began to build a large military complex close to the village of Belsen, a part of the town of Bergen, in what was then the Province of Hanover. This became the largest military training area in Germany of the time and was used for armoured vehicle training. The barracks were finished in 1937. The camp has been in continuous operation since then and is today known as Bergen-Hohne Training Area. It is used by the NATO armed forces.