With the issuance of the Berlin Declaration on 5 June 1945 and later creation of the Allied Control Council, the four Allied powers assumed temporary governance of Germany.[172] At the Potsdam Conference in August 1945, the Allies arranged for the Allied occupation and denazification of the country. Germany was split into four zones, each occupied by one of the Allied powers, who drew reparations from their zone. Since most of the industrial areas were in the western zones, the Soviet Union was transferred additional reparations.[173] The Allied Control Council disestablished Prussia on 20 May 1947.[174] Aid to Germany began arriving from the United States under the Marshall Plan in 1948.[175] The occupation lasted until 1949, when the countries of East Germany and West Germany were created. In 1970, Germany finalised her border with Poland by signing the Treaty of Warsaw.[176] Germany remained divided until 1990, when the Allies renounced all claims to German territory with the Treaty on the Final Settlement with Respect to Germany, under which Germany also renounced claims to territories lost during World War II.[177]
In November 2007, the Anne Frank tree—by then infected with a fungal disease affecting the tree trunk—was scheduled to be cut down to prevent it from falling on the surrounding buildings. Dutch economist Arnold Heertje said about the tree: "This is not just any tree. The Anne Frank tree is bound up with the persecution of the Jews."[108] The Tree Foundation, a group of tree conservationists, started a civil case to stop the felling of the horse chestnut, which received international media attention. A Dutch court ordered city officials and conservationists to explore alternatives and come to a solution.[109] The parties built a steel construction that was expected to prolong the life of the tree up to 15 years.[108] However, it was only three years later, on 23 August 2010, that gale-force winds blew down the tree.[110] Eleven saplings from the tree were distributed to museums, schools, parks and Holocaust remembrance centres through a project led by the Anne Frank Center USA. The first sapling was planted in April 2013 at The Children's Museum of Indianapolis. Saplings were also sent to a school in Little Rock, Arkansas, the scene of a desegregation battle; Liberty Park (Manhattan), which honours victims of the September 11 attacks; and other sites in the United States.[111] Another horse chestnut tree honoring Frank was planted in 2010 at Kelly Ingram Park in Birmingham, Alabama.[112]
The Communist Party of Germany (KPD) was the largest Communist Party in the world outside of the Soviet Union, until it was destroyed by the Nazis in 1933.[256] In the 1920s and early 30s, Communists and Nazis often fought each other directly in street violence, with the Nazi paramilitary organizations being opposed by the Communist Red Front and Anti-Fascist Action. After the beginning of the Great Depression, both Communists and Nazis saw their share of the vote increase. However, while the Nazis were willing to form alliances with other parties of the right, the Communists refused to form an alliance with the Social Democratic Party of Germany, the largest party of the left.[257] After the Nazis came to power, they quickly banned the Communist Party under the allegation that it was preparing for revolution and that it had caused the Reichstag fire.[258] Four thousand KPD officials were arrested in February 1933, and by the end of the year 130,000 communists had been sent to concentration camps.[259]
Pseudo-scientific racist theories were central to Nazism, expressed in the idea of a "people's community" (Volksgemeinschaft). The party aimed to unite "racially desirable" Germans as national comrades, while excluding those deemed either to be political dissidents, physically or intellectually inferior, or of a foreign race (Fremdvölkische).[9] The Nazis sought to strengthen the Germanic people, the "Aryan master race", through racial purity and eugenics, broad social welfare programs, and a collective subordination of individual rights, which could be sacrificed for the good of the state on behalf of the people.
This stunning historical episode is faithfully rendered in James Q. Whitman’s Hitler’s American Model, a slim but consequential report on the banality of lawful evil. Whitman is a professor of comparative and criminal law at Yale Law School. (Full disclosure: I was a student in his legal history class, although we never interacted.) In his book, he asks one of those dangerous intellectual questions that are so pressing in the current political era: How could the United States, the land of liberty and constitutional republicanism, have influenced the most racist and genocidal regime of the twentieth century? Given the neo-Nazis marching in Charleston, South Carolina, and in Chemnitz, Germany, along with the mélange of fellow-travelers on the fascist spectrum—white nationalists, the alt-right—Whitman’s investigation feels urgent. He wants to know what, if anything, the United States taught the Nazis, and what this in turn says about the United States.
Nazi flags: The Nazi Party used a right-facing swastika as their symbol and the red and black colours were said to represent Blut und Boden ("blood and soil"). Another definition of the flag describes the colours as representing the ideology of National Socialism, the swastika representing the Aryan race and the Aryan nationalist agenda of the movement; white representing Aryan racial purity; and red representing the socialist agenda of the movement. Black, white and red were in fact the colours of the old North German Confederation flag (invented by Otto von Bismarck, based on the Prussian colours black and white and the red used by northern German states). In 1871, with the foundation of the German Reich the flag of the North German Confederation became the German Reichsflagge ("Reich flag"). Black, white and red became the colours of the nationalists through the following history (for example World War I and the Weimar Republic).
Large segments of the Nazi Party, particularly among the members of the Sturmabteilung (SA), were committed to the party's official socialist, revolutionary and anti-capitalist positions and expected both a social and an economic revolution when the party gained power in 1933.[43] In the period immediately before the Nazi seizure of power, there were even Social Democrats and Communists who switched sides and became known as "Beefsteak Nazis": brown on the outside and red inside.[44] The leader of the SA, Ernst Röhm, pushed for a "second revolution" (the "first revolution" being the Nazis' seizure of power) that would enact socialist policies. Furthermore, Röhm desired that the SA absorb the much smaller German Army into its ranks under his leadership.[43] Once the Nazis achieved power, Röhm's SA was directed by Hitler to violently suppress the parties of the left, but they also began attacks against individuals deemed to be associated with conservative reaction.[45] Hitler saw Röhm's independent actions as violating and possibly threatening his leadership, as well as jeopardising the regime by alienating the conservative President Paul von Hindenburg and the conservative-oriented German Army.[46] This resulted in Hitler purging Röhm and other radical members of the SA in 1934, in what came to be known as the Night of the Long Knives.[46]

By mid-1942, the majority of those being sent by the Nazis to Auschwitz were Jews. Upon arriving at the camp, detainees were examined by Nazi doctors. Those detainees considered unfit for work, including young children, the elderly, pregnant women and the infirm, were immediately ordered to take showers. However, the bathhouses to which they marched were disguised gas chambers. Once inside, the prisoners were exposed to Zyklon-B poison gas. Individuals marked as unfit for work were never officially registered as Auschwitz inmates. For this reason, it is impossible to calculate the number of lives lost in the camp.

After the arrival of a transport at the ramp in Birkenau, the process known as selection took place. SS officers decided who would be taken to work, and who would be sent directly to the gas chambers. Often it was mere chance or the mood of the SS officer that decided whether someone died immediately or had a hope of survival. The prisoners selected for slave labour were sent to one of the many auxiliary camps at Auschwitz or elsewhere in the Nazi concentration camp system. Their aim was „Vernichtung durch Arbeit“ - extermination through labour.

The party's nominal Deputy Leader was Rudolf Hess, but he had no real power in the party. By the early 1930s, the senior leaders of the party after Hitler were Heinrich Himmler, Joseph Goebbels and Hermann Göring. Beneath the Leadership Corps were the party's regional leaders, the Gauleiters, each of whom commanded the party in his Gau ("region"). Goebbels began his ascent through the party hierarchy as Gauleiter of Berlin-Brandenburg in 1926. Streicher was Gauleiter of Franconia, where he published his antisemitic newspaper Der Stürmer. Beneath the Gauleiter were lower-level officials, the Kreisleiter ("county leaders"), Zellenleiter ("cell leaders") and Blockleiter ("block leaders"). This was a strictly hierarchical structure in which orders flowed from the top and unquestioning loyalty was given to superiors. Only the SA retained some autonomy. Being composed largely of unemployed workers, many SA men took the Nazis' socialist rhetoric seriously. At this time, the Hitler salute (borrowed from the Italian fascists) and the greeting "Heil Hitler!" were adopted throughout the party.

Other former staff were hanged for war crimes in the Dachau Trials and the Belsen Trial, including camp leaders Josef Kramer, Franz Hössler, and Vinzenz Schöttl; doctor Friedrich Entress; and guards Irma Grese and Elisabeth Volkenrath.[269] The Frankfurt Auschwitz trials, held in West Germany from 20 December 1963 to 20 August 1965, convicted 17 of 22 defendants, giving them prison sentences ranging from life to three years and three months.[270] Bruno Tesch and Karl Weinbacher, the owner and the chief executive officer of the firm Tesch & Stabenow, one of the suppliers of Zyklon B, were executed for knowingly supplying the chemical for use on humans.[271]

Between 1933 and the fall of Nazi Germany in 1945, more than 3.5 million Germans were forced to spend time in concentration camps and prisons for political reasons,[18][19][20] and approximately 77,000 Germans were executed for one or another form of resistance by Special Courts, courts-martial, and the civil justice system. Many of these Germans had served in government, the military, or in civil positions, which enabled them to engage in subversion and conspiracy against the Nazis.[11]