Concentration camp, internment centre for political prisoners and members of national or minority groups who are confined for reasons of state security, exploitation, or punishment, usually by executive decree or military order. Persons are placed in such camps often on the basis of identification with a particular ethnic or political group rather than as individuals and without benefit either of indictment or fair trial. Concentration camps are to be distinguished from prisons interning persons lawfully convicted of civil crimes and from prisoner-of-war camps in which captured military personnel are held under the laws of war. They are also to be distinguished from refugee camps or detention and relocation centres for the temporary accommodation of large numbers of displaced persons.
In Italy I joined the Irgun, the Zionist underground organisation fighting for Israeli independence led by Menachem Begin (later prime minister of Israel), and travelled with an arms smuggling ship, the Altalena, to Tel Aviv. All the time I kept with me my prison uniform, as proof of what had happened to me. We arrived on the shores of Tel Aviv on 20 June 1948 and I found myself at a pivotal moment in Israeli history, in a boat full of weapons that Ben-Gurion would not let on shore. It could easily have turned into a civil war. I was shot at by Israel Defence Force troopers as I jumped into the water and the Altalena was set ablaze and sunk by the IDF. With it sank my suitcase of clothes and my striped prisoner uniform, including my hat, coat, shirt and a knife.

Hitler's peace overtures to the new British Prime Minister Winston Churchill were rejected in July 1940. Grand Admiral Erich Raeder had advised Hitler in June that air superiority was a pre-condition for a successful invasion of Britain, so Hitler ordered a series of aerial attacks on Royal Air Force (RAF) airbases and radar stations, as well as nightly air raids on British cities, including London, Plymouth, and Coventry. The German Luftwaffe failed to defeat the RAF in what became known as the Battle of Britain, and by the end of October, Hitler realised that air superiority would not be achieved. He permanently postponed the invasion, a plan which the commanders of the German army had never taken entirely seriously.[107][108][e] Several historians, including Andrew Gordon, believe the primary reason for the failure of the invasion plan was due to the superiority of the Royal Navy, not the actions of the RAF.[109]
From the end of March 1942, Jewish transports from Nazi-ruled countries flowed into Auschwitz. Jews from Slovakia and France were deported there first, followed by Dutch Jews from July 1942, and from August, Jews from Belgium and Yugoslavia. Between October 1942 and October 1944, over 46 000 prisoners were deported from Terezín to Auschwitz. Some of them were put in the „Terezín family camp“ for a temporary period. Throughout 1943, transports were sent to Auschwitz from Germany and other countries in the Nazi sphere of power. The victims of the last great wave of deportations to Auschwitz were the Jews of Hungary, who were deported between May and July 1944.

The invasion conquered a huge area, including the Baltic states, Belarus, and west Ukraine. After the successful Battle of Smolensk in September 1941, Hitler ordered Army Group Centre to halt its advance to Moscow and temporarily divert its Panzer groups to aid in the encirclement of Leningrad and Kiev.[117] This pause provided the Red Army with an opportunity to mobilise fresh reserves. The Moscow offensive, which resumed in October 1941, ended disastrously in December.[118] On 7 December 1941, Japan attacked Pearl Harbor, Hawaii. Four days later, Germany declared war on the United States.[119]
Most Germans were relieved that the conflicts and street fighting of the Weimar era had ended. They were deluged with propaganda orchestrated by Minister of Public Enlightenment and Propaganda Joseph Goebbels, who promised peace and plenty for all in a united, Marxist-free country without the constraints of the Versailles Treaty.[44] The NSDAP obtained and legitimised power through its initial revolutionary activities, then through manipulation of legal mechanisms, the use of police powers, and by taking control of the state and federal institutions.[45][46] The first major Nazi concentration camp, initially for political prisoners, was opened at Dachau in 1933.[47] Hundreds of camps of varying size and function were created by the end of the war.[48]

Nazism’s principal instrument of control was the unification, under Heinrich Himmler and his chief lieutenant, Reinhard Heydrich, of the SS (the uniformed police force of the Nazi Party) and all other police and security organizations. Opposition to the regime was destroyed either by outright terror or, more frequently, by the all-pervading fear of possible repression. Opponents of the regime were branded enemies of the state and of the people, and an elaborate web of informers—often members of the family or intimate friends—imposed utmost caution on all expressions and activities. Justice was no longer recognized as objective but was completely subordinated to the alleged needs and interests of the Volk. In addition to the now-debased methods of the normal judicial process, special detention camps were erected. In these camps the SS exercised supreme authority and introduced a system of sadistic brutality unrivaled in modern times.
The German Nazi Party supported German irredentist claims to Austria, Alsace-Lorraine, the region now known as the Czech Republic and the territory known since 1919 as the Polish Corridor. A major policy of the German Nazi Party was Lebensraum ("living space") for the German nation based on claims that Germany after World War I was facing an overpopulation crisis and that expansion was needed to end the country's overpopulation within existing confined territory, and provide resources necessary to its people's well-being.[130] Since the 1920s, the Nazi Party publicly promoted the expansion of Germany into territories held by the Soviet Union.[131]
A column of inmates reached the Gross-Rosen complex. Throughout February, the terribly overcrowded main camp at Gross-Rosen was cleared, and all 44,000 inmates were moved further west. An unknown number died in this last journey.[245] In March 1945, Himmler ordered that no more prisoners should be killed, as he hoped to use them as hostages in negotiations with the Allies.[246] Approximately 20,000 Auschwitz prisoners made it to Bergen-Belsen, where they were liberated by the British in April 1945.[247]
Although there have been persistent claims of betrayal by an informant, the source of the information that led the authorities to raid the Achterhuis has never been identified. Night watchman Martin Sleegers and an unidentified police officer investigated a burglary at the premises in April 1944 and came across the bookcase concealing the secret door. Tonny Ahlers, a member of the National Socialist Movement in the Netherlands (NSB), was suspected of being the informant by Carol Ann Lee, biographer of Otto Frank. Another suspect is stockroom manager Willem van Maaren. The Annex occupants did not trust him, as he seemed inquisitive regarding people entering the stockroom after hours. He once unexpectedly asked the employees whether there had previously been a Mr. Frank at the office. Lena Hartog was suspected of being the informant by Anne Frank's biographer Melissa Müller. Several of these suspects knew one another and might have worked in collaboration. While virtually everyone connected with the betrayal was interrogated after the war, no one was definitively identified as being the informant.[41]
The Nazis seized from the French thousands of locomotives and rolling stock, stockpiles of weapons, and raw materials such as copper, tin, oil, and nickel.[103] Payments for occupation costs were levied upon France, Belgium, and Norway.[104] Barriers to trade led to hoarding, black markets, and uncertainty about the future.[105] Food supplies were precarious; production dropped in most of Europe.[106] Famine was experienced in many occupied countries.[106]
Some prisoners—usually Aryan—were assigned positions of authority, such as Blockschreiber ("block clerk"), Funktionshäftling ("functionary"), Kapo ("head" or "overseer"), and Stubendienst ("barracks orderly"). They were considered members of the camp elite, and had better food and lodgings than the other prisoners. The Kapos in particular wielded tremendous power over other prisoners, whom they often abused.[88][89] Very few Kapos were prosecuted after the war, because of the difficulty in determining which Kapo atrocities had been performed under SS orders and which had been individual actions.[90]

The first party that attempted to combine nationalism and socialism was the (Austria-Hungary) German Workers' Party, which predominantly aimed to solve the conflict between the Austrian Germans and the Czechs in the multi-ethnic Austrian Empire, then part of Austria-Hungary.[70] In 1896 the German politician Friedrich Naumann formed the National-Social Association which aimed to combine German nationalism and a non-Marxist form of socialism together; the attempt turned out to be futile and the idea of linking nationalism with socialism quickly became equated with antisemites, extreme German nationalists and the Völkisch movement in general.[27]
During the next two months, some fifty thousand people were arrested on this basis, in what turned into a “frenzy” of political purges and score-settling. In the legal murk of the early Nazi regime, it was unclear who had the power to make such arrests, and so it was claimed by everyone: national, state, and local officials, police and civilians, Party leaders. “Everybody is arresting everybody,” a Nazi official complained in the summer of 1933. “Everybody threatens everybody with Dachau.” As this suggests, it was already clear that the most notorious and frightening destination for political detainees was the concentration camp built by Himmler at Dachau, in Bavaria. The prisoners were originally housed in an old munitions factory, but soon Himmler constructed a “model camp,” the architecture and organization of which provided the pattern for most of the later K.L. The camp was guarded not by police but by members of the S.S.—a Nazi Party entity rather than a state force.
Hitler was not influenced by the United States alone. “Let’s learn from the English,” Hitler said repeatedly, “who, with two hundred and fifty thousand men in all, including fifty thousand soldiers, govern four hundred million Indians.” According to multiple sources, Hitler was also fascinated by Islam, which he saw as a muscular, militant religion in contrast to the meek faith of suffering that was Christianity—despite the fact that Arabs were Semites, and that non-Arab Muslims were considered racially inferior. Even closer to Hitler’s mind was Mustafa Kemal Pasha, or Atatürk, the founder of modern Turkey, who had resisted the Versailles Treaty and whose regime’s genocide of the Armenians was an early example of exterminationist policy.
As Soviet troops closed in on Auschwitz in late January 1945, the SS hurriedly evacuated some 56,000 prisoners on death marches to the west, then blew up the Birkenau gas chambers and crematoria to erase evidence of the mass murders. The Red Army liberated Auschwitz on January 27, 1945. Some 6,000 people were still alive at Birkenau. Another 1,000 were found at the main camp.
Political concentration camps instituted primarily to reinforce the state’s control have been established in various forms under many totalitarian regimes—most extensively in Nazi Germany and the Soviet Union. To a considerable extent, the camps served as the special prisons of the secret police. Nazi concentration camps were under the administration of the SS; forced-labour camps of the Soviet Union were operated by a succession of organizations beginning in 1917 with the Cheka and ending in the early 1990s with the KGB.
Adolf Hitler was released from prison on 20 December 1924. On 16 February 1925, Hitler convinced the Bavarian authorities to lift the ban on the NSDAP and the party was formally refounded on 26 February 1925, with Hitler as its undisputed leader. The new Nazi Party was no longer a paramilitary organisation and disavowed any intention of taking power by force. In any case, the economic and political situation had stabilised and the extremist upsurge of 1923 had faded, so there was no prospect of further revolutionary adventures. The Nazi Party of 1925 was divided into the "Leadership Corps" (Korps der politischen Leiter) appointed by Hitler and the general membership (Parteimitglieder). The party and the SA were kept separate and the legal aspect of the party's work was emphasised. In a sign of this, the party began to admit women. The SA and the SS members (the latter founded in 1925 as Hitler's bodyguard, and known originally as the Schutzkommando) had to all be regular party members.[68][69]

The Auschwitz concentration camp (Konzentrationslager Auschwitz) was a complex of over 40 concentration and extermination camps built and operated by Nazi Germany in occupied Poland during World War II and the Holocaust. It consisted of Auschwitz I, the main camp (Stammlager) and administrative headquarters, in Oświęcim; Auschwitz II–Birkenau, a combined concentration/extermination camp three kilometers away in Brzezinka; Auschwitz III–Monowitz, a labor camp seven kilometers from Auschwitz I, set up to staff an IG Farben synthetic-rubber factory; and dozens of other subcamps.[2]
How many men have become the victims of medical treatment—or rather of the lack of it—it is hard to say. I at least have learned about a case where an inmate of our category, about fifty years old, was rejected by the infirmary, treated unprofessionally in the first-aid station, and died the next day. I am not in a position to give statistical data as to whether, and to what extent, suicides of desperate prisoners have taken place. I had occasion only twice to see how prisoners tried to run into the charged wires of the fence in order to commit suicide. They were stopped at the last moment. One morning the corpse of a man who had succeeded in his undertaking was hanging in the meshes. It was said that it was the prisoner whose punishment we had witnessed on the day of our arrival at the camp.
These gassing facilities soon proved inadequate for the task of murdering the large numbers of Jewish deportees being sent to Auschwitz. Between March and June 1943, four large crematoria were built within Auschwitz-Birkenau, each with a gas chamber, a disrobing area, and crematory ovens. Gassings ceased at Bunkers I and II when Crematoria II through V began operating, although Bunker II was put back into operation during the deportation of Hungary’s Jews in 1944. Gassing of newly arrived transports ceased at Auschwitz by early November 1944.
Following Nazi Germany's defeat in World War II and the end of the Holocaust, overt expressions of support for Nazi ideas were prohibited in Germany and other European countries. Nonetheless, movements which self-identify as National Socialist or which are described as adhering to National Socialism continue to exist on the fringes of politics in many western societies. Usually espousing a white supremacist ideology, many deliberately adopt the symbols of Nazi Germany.[288]

Sunday was not a work day, but prisoners were required to clean the barracks and take their weekly shower,[115] and were allowed to write (in German) to their families, although the SS censored the outgoing mail. Inmates who did not speak German would trade some of their bread for help composing their letters.[116] Observant Jews tried to keep track of the Hebrew calendar and Jewish holidays, including Shabbat, and the weekly Torah portion. No watches, calendars, or clocks were permitted in the camp. Jewish calendars were rare among prisoners; being in possession of one was dangerous. Only two Jewish calendars made in Auschwitz survived to the end of the war. Prisoners kept track of the days in other ways, such as obtaining information from newcomers.[117]
As a result of the Holocaust, the term "concentration camp" carries many of the connotations of "extermination camp" and is sometimes used synonymously. Because of these ominous connotations, the term "concentration camp", originally itself a euphemism, has been replaced by newer terms such as internment camp, resettlement camp, detention facility, etc., regardless of the actual circumstances of the camp, which can vary a great deal.