Soon after he became chancellor, Hitler called for new elections in an effort to get full control of the Reichstag, the German parliament, for the Nazis. The Nazis used the government apparatus to terrorize the other parties. They arrested their leaders and banned their political meetings. Then, in the midst of the election campaign, on February 27, 1933, the Reichstag building burned. A Dutchman named Marinus van der Lubbe was arrested for the crime, and he swore he had acted alone. Although many suspected the Nazis were ultimately responsible for the act, the Nazis managed to blame the Communists, thus turning more votes their way.

The never-ending rumors surrounding these early concentration camps instilled a nagging sense of fear among all Germans that helped to extinguish all potential opposition and criticism of Hitler's regime. However, the greatest challenge to Hitler would not come from his political opponents but from within his own ranks. By early 1934, a storm trooper rebellion was brewing that threatened to ruin everything he had worked so hard to achieve.
In December 1944 SS-Hauptsturmführer Josef Kramer, previously at Auschwitz-Birkenau, became the new camp commandant, replacing SS-Hauptsturmführer Adolf Haas [de], who had been in post since the spring of 1943.[7] In January 1945, the SS took over the POW hospital and increased the size of Bergen-Belsen. As eastern concentration camps were evacuated before the advance of the Red Army, at least 85,000 people were transported in cattle cars or marched to Bergen-Belsen.[14] Before that the number of prisoners at Belsen had been much smaller. In July 1944 there were 7,300; by December 1944 the number had increased to 15,000; and by February 1945 it had risen to 22,000. Numbers then soared to around 60,000 by April 15, 1945.[7] This overcrowding led to a vast increase in deaths from disease: particularly typhus, as well as tuberculosis, typhoid fever, dysentery and malnutrition in a camp originally designed to hold about 10,000 inmates. At this point also, the special status of the exchange prisoners no longer applied. All inmates were subject to starvation and epidemics.[14]
^ Sven Felix Kellerhoff (21 October 2002). "Neue Museumskonzepte für die Konzentrationslager". WELT ONLINE (in German). Axel Springer AG. Retrieved 2 June 2008. . . . die SS-Kasernen neben dem KZ Dachau wurden zuerst (bis 1974) von der US-Armee bezogen. Seither nutzt sie die VI. Bayerische Bereitschaftspolizei. (. . . the SS barracks adjacent to the Dachau concentration camp were at first occupied by the US Army (until 1974). Since then they have been used by the Sixth Rapid Response Unit of the Bavarian Police.)

... In Bergen-Belsen, for example, thousands of corpses of Jewish prisoners were found by British soldiers on the day of liberation, which gave the impression that this was one of the notorious extermination camps. Actually, many Jews in Bergen-Belsen as well as in the satellite camps of Dachau died in the last weeks before the end of the war as a result of the quickly improvised retransfers and evacuations of Jewish workers from the still existing ghettos, work camps and concentration camps in the East (Auschwitz) ...
^ Goebbels noted: "Regarding the Jewish question, the Fuhrer is determined to clear the table. He warned the Jews that if they were to cause another world war, it would lead to their own destruction. Those were not empty words. Now the world war has come. The destruction of the Jews must be its necessary consequence. We cannot be sentimental about it. It is not for us to feel sympathy for the Jews. We should have sympathy rather with our own German people. If the German people have to sacrifice 160,000 victims in yet another campaign in the east, then those responsible for this bloody conflict will have to pay for it with their lives."[262]
On January 20, 1942, several top officials of the German government met to officially coordinate the military and civilian administrative branches of the Nazi system to organize a system of mass murder of the Jews. This meeting, called the Wannsee Conference, "marked the beinning of the full-scale, comprehensive extermination operation [of the Jews] and laid the foundations for its organization, which started immediately after the conference ended" (Yahil, The Holocaust, p. 318).
Because they refused to pledge allegiance to the Nazi party or serve in the military, Jehovah's Witnesses were sent to concentration camps, where they were identified by purple triangles and given the option of renouncing their faith and submitting to the state's authority.[447] The United States Holocaust Memorial Museum estimates that between 2,700 and 3,300 were sent to the camps, where 1,400 died;[411] in The Holocaust Encyclopedia (2001), Sybil Milton estimates that 10,000 were sent and 2,500 died.[412] According to German historian Detlef Garbe, "no other religious movement resisted the pressure to conform to National Socialism with comparable unanimity and steadfastness."[448]
Estimates of the number of people who died in Bergen-Belsen have ranged widely over the years. Many have been irresponsible exaggerations. Typical is a 1985 York Daily News report, which told readers that "probably 100,000 died at Bergen-Belsen." /39 An official German government publication issued in 1990 declared that "more than 50,000 people had been murdered" in the Belsen camp under German control, and "an additional 13,000 died in the first weeks after liberation." /40
The Third Reich first used concentration camps as places of unlawful incarceration of political opponents and other "enemies of the state". Large numbers of Jews were not sent there until after Kristallnacht in November 1938.[182] Although death rates were high, the camps were not designed as killing centers.[183] After war broke out in 1939, new camps were established, some outside Germany in occupied Europe.[184] In January 1945, the SS reports had over 700,000 prisoners in their control, of which close to half had died by the end of May 1945 according to most historians.[185] Most wartime prisoners of the camps were not Germans but belonged to countries under German occupation.[186]
Over the next days the surviving prisoners were deloused and moved to a nearby German Panzer army camp, which became the Bergen-Belsen DP (displaced persons) camp. Over a period of four weeks, almost 29,000 of the survivors were moved there. Before the handover, the SS had managed to destroy the camp's administrative files, thereby eradicating most written evidence.[21]
Bergen-Belsen [ˈbɛʁɡn̩.bɛlsn̩], or Belsen, was a Nazi concentration camp in what is today Lower Saxony in northern Germany, southwest of the town of Bergen near Celle. Originally established as a prisoner of war camp,[1] in 1943, parts of it became a concentration camp. Initially this was an "exchange camp", where Jewish hostages were held with the intention of exchanging them for German prisoners of war held overseas.[2] The camp was later expanded to accommodate Jews from other concentration camps.