In most of the camps discovered by the Soviets, almost all the prisoners had already been removed, leaving only a few thousand alive—7,000 inmates were found in Auschwitz, including 180 children who had been experimented on by doctors.[45] Some 60,000 prisoners were discovered at Bergen-Belsen by the British 11th Armoured Division,[46] 13,000 corpses lay unburied, and another 10,000 died from typhus or malnutrition over the following weeks.[47] The British forced the remaining SS guards to gather up the corpses and place them in mass graves.[48]
Through the 1920s, Hitler gave speech after speech in which he stated that unemployment, rampant inflation, hunger and economic stagnation in postwar Germany would continue until there was a total revolution in German life. Most problems could be solved, he explained, if communists and Jews were driven from the nation. His fiery speeches swelled the ranks of the Nazi Party, especially among young, economically disadvantaged Germans.
Action T4 was a programme of systematic murder of the physically and mentally handicapped and patients in psychiatric hospitals that took place mainly from 1939 to 1941, and continued until the end of the war. Initially the victims were shot by the Einsatzgruppen and others; gas chambers and gas vans using carbon monoxide were used by early 1940.[312][313] Under the Law for the Prevention of Hereditarily Diseased Offspring, enacted on 14 July 1933, over 400,000 individuals underwent compulsory sterilisation.[314] Over half were those considered mentally deficient, which included not only people who scored poorly on intelligence tests, but those who deviated from expected standards of behaviour regarding thrift, sexual behaviour, and cleanliness. Most of the victims came from disadvantaged groups such as prostitutes, the poor, the homeless, and criminals.[315] Other groups persecuted and killed included Jehovah's Witnesses, homosexuals, social misfits, and members of the political and religious opposition.[186][316]
Auschwitz was probably chosen to play a central role in the “final solution” because it was located at a railway junction with 44 parallel tracks—rail lines that were used to transport Jews from throughout Europe to their death. Heinrich Himmler, chief of the SS, the Nazi paramilitary corps, ordered the establishment of the first camp, the prison camp, on April 27, 1940, and the first transport of Polish political prisoners arrived on June 14. This small camp, Auschwitz I, was reserved throughout its history for political prisoners, mainly Poles and Germans.

After Auschwitz they transferred me to Mauthausen, then Gozen and Hanover. From there they sent us on foot to Bergen-Belsen, where I was finally liberated. It was 14 April (1945). I was so weak I could hardly stand and it was all I could do to lift my head slightly from the ground where I was lying as British army tanks started arriving to save us. But for all the great things the British did then, I can only say they made many other mistakes and what’s going on in Israel now is largely Britain’s fault.
In 1934, Hitler told his military leaders that a war in the east should begin in 1942.[56] The Saarland, which had been placed under League of Nations supervision for 15 years at the end of World War I, voted in January 1935 to become part of Germany.[57] In March 1935, Hitler announced the creation of an air force, and that the Reichswehr would be increased to 550,000 men.[58] Britain agreed to Germany building a naval fleet with the signing of the Anglo-German Naval Agreement on 18 June 1935.[59]

The first camp in Germany, Dachau, was founded in March 1933.[13] The press announcement said that "the first concentration camp is to be opened in Dachau with an accommodation for 5,000 people. All Communists and – where necessary – Reichsbanner and Social Democratic functionaries who endanger state security are to be concentrated there, as in the long run it is not possible to keep individual functionaries in the state prisons without overburdening these prisons."[13] Dachau was the first regular concentration camp established by the German coalition government of National Socialist Workers' Party (Nazi Party) and the Nationalist People's Party (dissolved on 6 July 1933). Heinrich Himmler, then Chief of Police of Munich, officially described the camp as "the first concentration camp for political prisoners."[13]