Heinrich Himmler

Heinrich Luitpold Himmler was born in Munich on 7 October 1900 into a conservative middle-class Roman Catholic family. His father was Joseph Gebhard Himmler (17 May 1865 – 29 October 1936), a teacher, and his mother was Anna Maria Himmler (née Heyder; 16 January 1866 – 10 September 1941), a devout Roman Catholic. Heinrich had two brothers, Gebhard Ludwig (29 July 1898 – 22 June 1982) and Ernst Hermann (23 December 1905 – 2 May 1945).

Himmler's diary, which he kept intermittently from the age of 10, shows that he took a keen interest in current events, dueling, and "the serious discussion of religion and sex". In 1915, he began training with the Landshut Cadet Corps. His father used his connections with the royal family to get Himmler accepted as an officer candidate, and he enlisted with the reserve battalion of the 11th Bavarian Regiment in December 1917. His brother, Gebhard, served on the western front and saw combat, receiving the Iron Cross and eventually being promoted to lieutenant. In November 1918, while Himmler was still in training, the war ended with Germany's defeat, denying him the opportunity to become an officer or see combat. After his discharge on 18 December, he returned to Landshut. After the war, Himmler completed his grammar-school education. From 1919–22, he studied agronomy at the Munich Technische Hochschule (now Technical University Munich) following a brief apprenticeship on a farm and a subsequent illness.

In 1922, Himmler became more interested in the "Jewish question", with his diary entries containing an increasing number of antisemitic remarks and recording a number of discussions about Jews with his classmates. His reading lists, as recorded in his diary, were dominated by antisemitic pamphlets, German myths, and occult tracts. After the murder of Foreign Minister Walther Rathenau on 24 June, Himmler's political views veered towards the radical right, and he took part in demonstrations against the Treaty of Versailles. Hyperinflation was raging, and his parents could no longer afford to educate all three sons. Disappointed by his failure to make a career in the military and his parents' inability to finance his doctoral studies, he was forced to take a low-paying office job after obtaining his agricultural diploma. He remained in this position until September 1923.

Himmler joined the Nazi Party (NSDAP) in August 1923, receiving Party number 14303. As a member of Röhm's paramilitary unit, Himmler was involved in the Beer Hall Putsch—an unsuccessful attempt by Hitler and the NSDAP to seize power in Munich. This event would set Himmler on a life of politics. He was questioned by the police about his role in the putsch, but was not charged because of insufficient evidence. However, he lost his job, was unable to find employment as an agronomist, and had to move in with his parents in Munich. Frustrated by these failures, he became ever more irritable, aggressive, and opinionated, alienating both friends and family members.

That same year, he joined the Schutzstaffel (SS) as an SS-Führer (SS-Leader); his SS number was 168. The SS, initially part of the much larger SA, was formed in 1923 for Hitler's personal protection, and was re-formed in 1925 as an elite unit of the SA. Himmler's first leadership position in the SS was that of SS-Gauführer (district leader) in Lower Bavaria from 1926. Strasser appointed Himmler deputy propaganda chief in January 1927. As was typical in the NSDAP, he had considerable freedom of action in his post, which increased over time. He began to collect statistics on the number of Jews, Freemasons, and enemies of the party, and following his strong need for control, he developed an elaborate bureaucracy. In September 1927, Himmler told Hitler of his vision to transform the SS into a loyal, powerful, racially pure elite unit. Convinced that Himmler was the man for the job, Hitler appointed him Deputy Reichsführer-SS, with the rank of SS-Oberführer.

In 1923–24, Himmler, while searching for a world view, came to abandon Catholicism and focused on the occult and in antisemitism. Germanic mythology, reinforced by occult ideas, became a religion for him. Himmler found the NSDAP appealing because its political positions agreed with his own views. Initially, he was not swept up by Hitler's charisma or the cult of Führer worship. However, as he learned more about Hitler through his reading, he began to regard him as a useful face of the party, and he later admired and even worshipped him. To consolidate and advance his own position in the NSDAP, Himmler took advantage of the disarray in the party following Hitler's arrest in the wake of the Beer Hall Putsch. From mid-1924 he worked under Gregor Strasser as a party secretary and propaganda assistant. Travelling all over Bavaria agitating for the party, he gave speeches and distributed literature. Placed in charge of the party office in Lower Bavaria by Strasser from late 1924, he was responsible for integrating the area's membership with the NSDAP under Hitler when the party was re-founded in February 1925.

Himmler met his future wife, Margarete Boden, in 1927. Seven years his senior, she was a nurse who shared his interest in herbal medicine and homoeopathy, and was part owner of a small private clinic. They were married in July 1928, and their only child, Gudrun, was born on 8 August 1929. The couple were also foster parents to a boy named Gerhard von Ahe, son of an SS officer who had died before the war. Margarete sold her share of the clinic and used the proceeds to buy a plot of land in Waldtrudering, near Munich, where they erected a prefabricated house. Himmler was constantly away on party business, so his wife took charge of their efforts—mostly unsuccessful—to raise livestock for sale. They had a dog, Töhle.

Upon the resignation of SS commander Erhard Heiden in January 1929, Himmler assumed the position of Reichsführer-SS with Hitler's approval; he still carried out his duties at propaganda headquarters. One of his first responsibilities was to organise SS participants at the Nuremberg Rally that September. Over the next year, Himmler grew the SS from a force of about 290 men to about 3,000. By 1930 Himmler had persuaded Hitler to run the SS as a separate organisation, although it was officially still subordinate to the SA.

Himmler's organised, bookish intellect served him well as he began setting up different SS departments. In 1931 he appointed Reinhard Heydrich chief of the new Ic Service (intelligence service), which was renamed the Sicherheitsdienst (SD: Security Service) in 1932. He later officially appointed Heydrich his deputy. The two men had a good working relationship and a mutual respect. In 1933, they began to remove the SS from SA control. Along with Interior Minister Frick, they hoped to create a unified German police force. In March 1933, Reich Governor of Bavaria Franz Ritter von Epp appointed Himmler chief of the Munich Police. Himmler appointed Heydrich commander of Department IV, the political police. Thereafter, Himmler and Heydrich took over the political police of state after state; soon only Prussia was controlled by Göring. Effective 1 January 1933, Hitler promoted Himmler to the rank of SS-Obergruppenführer, equal in rank to the senior SA commanders. On 2 June Himmler, along with the heads of the other two Nazi paramilitary organizations, the SA and the Hitler Youth, was named a Reichsleiter, the second highest political rank in the Nazi Party. On 10 July, he was named a Prussian State Councillor.

Himmler further established the SS Race and Settlement Main Office (Rasse- und Siedlungshauptamt or RuSHA). He appointed Darré as its first chief, with the rank of SS-Gruppenführer. The department implemented racial policies and monitored the "racial integrity" of the SS membership. SS men were carefully vetted for their racial background. On 31 December 1931, Himmler introduced the "marriage order", which required SS men wishing to marry to produce family trees proving that both families were of Aryan descent to 1800. If any non-Aryan forebears were found in either family tree during the racial investigation, the person concerned was excluded from the SS. Each man was issued a Sippenbuch, a genealogical record detailing his genetic history. Himmler expected that each SS marriage should produce at least four children, thus creating a pool of genetically superior prospective SS members. The programme had disappointing results; less than 40 per cent of SS men married and each produced only about one child.

To gain political power, the NSDAP took advantage of the economic downturn during the Great Depression. The coalition government of the Weimar Republic was unable to improve the economy, so many voters turned to the political extreme, which included the NSDAP. Hitler used populist rhetoric, including blaming scapegoats—particularly the Jews—for the economic hardships. In September of 1930, Himmler was first elected as a deputy to the Reichstag. In the 1932 election, the Nazis won 37.3 percent of the vote and 230 seats in the Reichstag. Hitler was appointed Chancellor of Germany by President Paul von Hindenburg on 30 January 1933, heading a short-lived coalition of his Nazis and the German National People's Party. The new cabinet initially included only three members of the NSDAP: Hitler, Hermann Göring as minister without portfolio and Minister of the Interior for Prussia, and Wilhelm Frick as Reich Interior Minister. Less than a month later, the Reichstag building was set on fire. Hitler took advantage of this event, forcing von Hindenburg to sign the Reichstag Fire Decree, which suspended basic rights and allowed detention without trial. The Enabling Act, passed by the Reichstag in 1933, gave the Cabinet—in practice, Hitler—full legislative powers, and the country became a de facto dictatorship. On 1 August 1934, Hitler's cabinet passed a law which stipulated that upon von Hindenburg's death, the office of president would be abolished and its powers merged with those of the chancellor. Von Hindenburg died the next morning, and Hitler became both head of state and head of government under the title Führer und Reichskanzler (leader and chancellor).

All regalia and uniforms of Nazi Germany, particularly those of the SS, used symbolism in their designs. The stylised lightning bolt logo of the SS was chosen in 1932. The logo is a pair of runes from a set of 18 Armanen runes created by Guido von List in 1906. The ancient Sowilō rune originally symbolised the sun, but was renamed "Sig" (victory) in List's iconography. Himmler modified a variety of existing customs to emphasise the elitism and central role of the SS; an SS naming ceremony was to replace baptism, marriage ceremonies were to be altered, a separate SS funeral ceremony was to be held in addition to Christian ceremonies, and SS-centric celebrations of the summer and winter solstices were instituted. The Totenkopf (death's head) symbol, used by German military units for hundreds of years, had been chosen for the SS by Schreck. Himmler placed particular importance on the death's-head rings; they were never to be sold, and were to be returned to him upon the death of the owner. He interpreted the deaths-head symbol to mean solidarity to the cause and a commitment unto death.

In March 1933, less than three months after the Nazis came to power, Himmler set up the first official concentration camp at Dachau. Hitler had stated that he did not want it to be just another prison or detention camp. Himmler appointed Theodor Eicke, a convicted felon and ardent Nazi, to run the camp in June 1933. Eicke devised a system that was used as a model for future camps throughout Germany. Its features included isolation of victims from the outside world, elaborate roll calls and work details, the use of force and executions to exact obedience, and a strict disciplinary code for the guards. Uniforms were issued for prisoners and guards alike; the guards' uniforms had a special Totenkopf insignia on their collars. By the end of 1934, Himmler took control of the camps under the aegis of the SS, creating a separate division, the SS-Totenkopfverbände.

Göring had created a Prussian secret police force, the Geheime Staatspolizei or Gestapo in 1933, and appointed Rudolf Diels as its head. Göring, concerned that Diels was not ruthless enough to use the Gestapo effectively to counteract the power of the SA, handed over its control to Himmler on 20 April 1934. Also on that date, Hitler appointed Himmler chief of all German police outside Prussia. This was a radical departure from long-standing German practice that law enforcement was a state and local matter. Heydrich, named chief of the Gestapo by Himmler on 22 April 1934, also continued as head of the SD.

In early 1934, Hitler and other Nazi leaders became concerned that Röhm was planning a coup d'état. Röhm had socialist and populist views, and believed that the real revolution had not yet begun. He felt that the SA—now numbering some three million men, far dwarfing the army—should become the sole arms-bearing corps of the state, and that the army should be absorbed into the SA under his leadership. Röhm lobbied Hitler to appoint him Minister of Defence, a position held by conservative General Werner von Blomberg.

Hitler decided on 21 June that Röhm and the SA leadership had to be eliminated. He sent Göring to Berlin on 29 June, to meet with Himmler and Heydrich to plan the action. Hitler took charge in Munich, where Röhm was arrested; he gave Röhm the choice to commit suicide or be shot. When Röhm refused to kill himself, he was shot dead by two SS officers. Between 85 and 200 members of the SA leadership and other political adversaries, including Gregor Strasser, were killed between 30 June and 2 July 1934 in these actions, known as the Night of the Long Knives. With the SA thus neutralised, the SS became an independent organisation answerable only to Hitler on 20 July 1934. Himmler's title of Reichsführer-SS became the highest formal SS rank, equivalent to a field marshal in the army. The SA was converted into a sports and training organisation.

After the Nazis came to power the family moved first to Möhlstrasse in Munich, and in 1934 to Lake Tegern, where they bought a house. Himmler also later obtained a large house in the Berlin suburb of Dahlem, free of charge, as an official residence. The couple saw little of each other as Himmler became totally absorbed by work. The relationship was strained. The couple did unite for social functions; they were frequent guests at the Heydrich home. Margarete saw it as her duty to invite the wives of the senior SS leaders over for afternoon coffee and tea on Wednesday afternoons.

On 15 September 1935, Hitler presented two laws—known as the Nuremberg Laws—to the Reichstag. The laws banned marriage between non-Jewish and Jewish Germans and forbade the employment of non-Jewish women under the age of 45 in Jewish households. The laws also deprived so-called "non-Aryans" of the benefits of German citizenship. These laws were among the first race-based measures instituted by the Third Reich.

Himmler and Heydrich wanted to extend the power of the SS; thus, they urged Hitler to form a national police force overseen by the SS, to guard Nazi Germany against its many enemies at the time—real and imagined. Interior Minister Frick also wanted a national police force, but one controlled by him, with Kurt Daluege as his police chief. Hitler left it to Himmler and Heydrich to work out the arrangements with Frick. Himmler and Heydrich had greater bargaining power, as they were allied with Frick's old enemy, Göring. Heydrich drew up a set of proposals and Himmler sent him to meet with Frick. An angry Frick then consulted with Hitler, who told him to agree to the proposals. Frick acquiesced, and on 17 June 1936 Hitler decreed the unification of all police forces in the Reich, and named Himmler Chief of German Police and a State Secretary in the Ministry of the Interior. In this role, Himmler was still nominally subordinate to Frick. In practice, however, the police was now effectively a division of the SS, and hence independent of Frick's control. This move gave Himmler operational control over Germany's entire detective force. He also gained authority over all of Germany's uniformed law enforcement agencies, which were amalgamated into the new Ordnungspolizei (Orpo: "order police"), which became a branch of the SS under Daluege.

Hedwig Potthast, Himmler's young secretary starting in 1936, became his mistress by 1939. She left her job in 1941. He arranged accommodation for her, first in Mecklenburg and later at Berchtesgaden. He fathered two children with her: a son, Helge (born 15 February 1942) and a daughter, Nanette Dorothea (born 20 July 1944, Berchtesgaden). Margarete, by then living in Gmund with her daughter, learned of the relationship sometime in 1941; she and Himmler were already separated, and she decided to tolerate the relationship for the sake of her daughter. Working as a nurse for the German Red Cross during the war, Margarete was appointed supervisor in Military District III (Berlin-Brandenburg). Himmler was close to his first daughter, Gudrun, whom he nicknamed Püppi ("dolly"); he phoned her every few days and visited as often as he could.

Initially the camps housed political opponents; over time, undesirable members of German society—criminals, vagrants, deviants—were placed in the camps as well. A Hitler decree issued in December 1937 allowed for the incarceration of anyone deemed by the regime to be an undesirable member of society. This included Jews, Gypsies, communists, and those persons of any other cultural, racial, political, or religious affiliation deemed by the Nazis to be Untermensch (sub-human). Thus, the camps became a mechanism for social and racial engineering. By the outbreak of World War II in autumn 1939, there were six camps housing some 27,000 inmates. Death tolls were high.

Himmler believed that a major task of the SS should be "acting as the vanguard in overcoming Christianity and restoring a 'Germanic' way of living" as part of preparations for the coming conflict between "humans and subhumans". Himmler biographer Peter Longerich wrote that, while the Nazi movement as a whole launched itself against Jews and Communists, "by linking de-Christianisation with re-Germanization, Himmler had provided the SS with a goal and purpose all of its own". Himmler was vehemently opposed to Christian sexual morality and the "principle of Christian mercy", both of which he saw as dangerous obstacles to his planned battle with "subhumans". In 1937, Himmler declared:

In 1938, as part of his preparations for war, Hitler ended the German alliance with China, and entered into an agreement with the more modern Japan. That same year, Austria was unified with Nazi Germany in the Anschluss, and the Munich Agreement gave Nazi Germany control over the Sudetenland, part of Czechoslovakia. Hitler's primary motivations for war included obtaining additional Lebensraum ("living space") for the Germanic peoples, who were considered racially superior according to Nazi ideology. A second goal was the elimination of those considered racially inferior, particularly the Jews and Slavs, from territories controlled by the Reich. From 1933 to 1938, hundreds of thousands of Jews emigrated to the United States, Palestine, Great Britain, and other countries. Some converted to Christianity.

The Nazis also targeted Romani (Gypsies) as "asocial" and "criminals". By 1935, they were confined into special camps away from ethnic Germans. In 1938, Himmler issued an order in which he said that the 'Gypsy question' would be determined by "race". Himmler believed that the Romani were originally Aryan but had become a mixed race; only the "racially pure" were to be allowed to live. In 1939, Himmler ordered thousands of Gypsies to be sent to the Dachau concentration camp and by 1942, ordered all Romani sent to Auschwitz concentration camp.

Shortly thereafter, Himmler created the Kriminalpolizei (Kripo: criminal police) as the umbrella organisation for all criminal investigation agencies in Germany. The Kripo was merged with the Gestapo into the Sicherheitspolizei (SiPo: security police), under Heydrich's command. In September 1939, following the outbreak of World War II, Himmler formed the SS-Reichssicherheitshauptamt (RSHA: Reich Main Security Office) to bring the SiPo (which included the Gestapo and Kripo) and the SD together under one umbrella. He again placed Heydrich in command.

When Hitler and his army chiefs asked for a pretext for the invasion of Poland in 1939, Himmler, Heydrich, and Heinrich Müller masterminded and carried out a false flag project code-named Operation Himmler. German soldiers dressed in Polish uniforms undertook border skirmishes which deceptively suggested Polish aggression against Germany. The incidents were then used in Nazi propaganda to justify the invasion of Poland, the opening event of World War II. At the beginning of the war against Poland, Hitler authorised the killing of Polish civilians, including Jews and ethnic Poles. The Einsatzgruppen (SS task forces) had originally been formed by Heydrich to secure government papers and offices in areas taken over by Germany before World War II. Authorised by Hitler and under the direction of Himmler and Heydrich, the Einsatzgruppen units—now repurposed as death squads—followed the Heer (army) into Poland, and by the end of 1939 they had murdered some 65,000 intellectuals and other civilians. Militias and Heer units also took part in these killings. Under Himmler's orders via the RSHA, these squads were also tasked with rounding up Jews and others for placement in ghettos and concentration camps.

Himmler was interested in mysticism and the occult from an early age. He tied this interest into his racist philosophy, looking for proof of Aryan and Nordic racial superiority from ancient times. He promoted a cult of ancestor worship, particularly among members of the SS, as a way to keep the race pure and provide immortality to the nation. Viewing the SS as an "order" along the lines of the Teutonic Knights, he had them take over the Church of the Teutonic Order in Vienna in 1939. He began the process of replacing Christianity with a new moral code that rejected humanitarianism and challenged the Christian concept of marriage. The Ahnenerbe, a research society founded by Himmler in 1935, searched the globe for proof of the superiority and ancient origins of the Germanic race.

In addition to his military ambitions, Himmler established the beginnings of a parallel economy under the umbrella of the SS. To this end, administrator Oswald Pohl set up the Deutsche Wirtschaftsbetriebe (German Economic Enterprise) in 1940. Under the auspices of the SS Economy and Administration Head Office, this holding company owned housing corporations, factories, and publishing houses. Pohl was unscrupulous and quickly exploited the companies for personal gain. In contrast, Himmler was honest in matters of money and business.

Germany subsequently invaded Denmark and Norway, the Netherlands, and France, and began bombing Great Britain in preparation for Operation Sea Lion, the planned invasion of the United Kingdom. On 21 June 1941, the day before invasion of the Soviet Union, Himmler commissioned the preparation of the Generalplan Ost (General Plan for the East); the plan was finalised in July 1942. It called for the Baltic States, Poland, Western Ukraine, and Byelorussia to be conquered and resettled by ten million German citizens. The current residents—some 31 million people—would be expelled further east, starved, or used for forced labour. The plan would have extended the border of Germany a thousand kilometres to the east (620 miles). Himmler expected that it would take twenty to thirty years to complete the plan, at a cost of 67 billion Reichsmarks. Himmler stated openly: "It is a question of existence, thus it will be a racial struggle of pitiless severity, in the course of which 20 to 30 million Slavs and Jews will perish through military actions and crises of food supply."

In late 1941, Hitler named Heydrich as Deputy Reich Protector of the newly established Protectorate of Bohemia and Moravia. Heydrich began to racially classify the Czechs, deporting many to concentration camps. Members of a swelling resistance were shot, earning Heydrich the nickname "the Butcher of Prague". This appointment strengthened the collaboration between Himmler and Heydrich, and Himmler was proud to have SS control over a state. Despite having direct access to Hitler, Heydrich's loyalty to Himmler remained firm.

With Hitler's approval, Himmler re-established the Einsatzgruppen in the lead-up to the planned invasion of the Soviet Union. In March 1941, Hitler addressed his army leaders, detailing his intention to smash the Soviet Empire and destroy the Bolshevik intelligentsia and leadership. His special directive, the "Guidelines in Special Spheres re Directive No. 21 (Operation Barbarossa)", read: "In the operations area of the army, the Reichsführer-SS has been given special tasks on the orders of the Führer, in order to prepare the political administration. These tasks arise from the forthcoming final struggle of two opposing political systems. Within the framework of these tasks, the Reichsführer-SS acts independently and on his own responsibility." Hitler thus intended to prevent internal friction like that occurring earlier in Poland in 1939, when several German Army generals had attempted to bring Einsatzgruppen leaders to trial for the murders they had committed.

Following the army into the Soviet Union, the Einsatzgruppen rounded up and killed Jews and others deemed undesirable by the Nazi state. Hitler was sent frequent reports. In addition, 2.8 million Soviet prisoners of war died of starvation, mistreatment or executions in just eight months of 1941–42. As many as 500,000 Soviet prisoners of war died or were executed in Nazi concentration camps over the course of the war; most of them were shot or gassed. By early 1941, following Himmler's orders, ten concentration camps had been constructed in which inmates were subjected to forced labour. Jews from all over Germany and the occupied territories were deported to the camps or confined to ghettos. As the Germans were pushed back from Moscow in December 1941, signalling that the expected quick defeat of the Soviet Union had failed to materialize, Hitler and other Nazi officials realised that mass deportations to the east would no longer be possible. As a result, instead of deportation, many Jews in Europe were destined for death.

Nazi racial policies, including the notion that people who were racially inferior had no right to live, date back to the earliest days of the party; Hitler discusses this in Mein Kampf. Somewhere around the time of the German declaration of war on the United States in December 1941, Hitler finally resolved that the Jews of Europe were to be "exterminated." Heydrich arranged a meeting, held on 20 January 1942 at Wannsee, a suburb of Berlin. Attended by top Nazi officials, it was used to outline the plans for the "final solution to the Jewish question". Heydrich detailed how those Jews able to work would be worked to death; those unable to work would be killed outright. Heydrich calculated the number of Jews to be killed at 11 million, and told the attendees that Hitler had placed Himmler in charge of the plan.

Initially the victims were killed with gas vans or by firing squad, but these methods proved impracticable for an operation of this scale. In August 1941, Himmler attended the shooting of 100 Jews at Minsk. Nauseated and shaken by the experience, he was concerned about the impact such actions would have on the mental health of his SS men. He decided that alternate methods of killing should be found. On his orders, by early 1942 the camp at Auschwitz had been greatly expanded, including the addition of gas chambers, where victims were killed using the pesticide Zyklon B. Himmler visited the camp in person on 17 and 18 July 1942. He was given a demonstration of a mass killing using the gas chamber in Bunker 2 and toured the building site of the new IG Farben plant being constructed at the nearby town of Monowitz. By the end of the war, at least 5.5 million Jews had been killed by the Nazi regime; most estimates range closer to six million. Himmler visited the camp at Sobibór in early 1943, by which time 250,000 people had been killed at that location alone. After witnessing a gassing, he gave 28 people promotions, and ordered the operation of the camp to be wound down. In a revolt that October, prisoners killed most of the guards and SS personnel, and 300 prisoners escaped. Two hundred managed to get away; some joined partisan units operating in the area. The remainder were killed. The camp was dismantled by December 1943.

In June 1942, Heydrich was assassinated in Prague in Operation Anthropoid, led by Jozef Gabčík and Jan Kubiš, members of Czechoslovakia's army-in-exile who had been trained by the British Special Operations Executive. During the two funeral services, Himmler—the chief mourner—took charge of Heydrich's two young sons, and he gave the eulogy in Berlin. On 9 June, after discussions with Himmler and Karl Hermann Frank, Hitler ordered brutal reprisals for Heydrich's death. Over 13,000 people were arrested, and the village of Lidice was razed to the ground; its male inhabitants and all adults in the village of Ležáky were murdered. At least 1,300 people were executed by firing squads. Himmler took over leadership of the RSHA and stepped up the pace of the killing of Jews in Aktion Reinhard (Operation Reinhard), named in Heydrich's honour. He ordered the Aktion Reinhard camps—three extermination camps—to be constructed at Bełżec, Sobibór, and Treblinka.

Himmler was one of the main architects of the Holocaust, using his deep belief in the racist Nazi ideology to justify the murder of millions of victims. Longerich surmises that Hitler, Himmler, and Heydrich designed the Holocaust during a period of intensive meetings and exchanges in April–May 1942. The Nazis planned to kill Polish intellectuals and restrict non-Germans in the General Government and conquered territories to a fourth-grade education. They further wanted to breed a master race of racially pure Nordic Aryans in Germany. As an agronomist and farmer Himmler was acquainted with the principles of selective breeding, which he proposed to apply to humans. He believed that he could engineer the German populace, for example, through eugenics, to be Nordic in appearance within several decades of the end of the war.

On 4 October 1943, during a secret meeting with top SS officials in the city of Poznań (Posen), and on 6 October 1943, in a speech to the party elite—the Gau and Reich leaders—Himmler referred explicitly to the "extermination" (German: Ausrottung) of the Jewish people.

By January 1943, Himmler reported that 629,000 ethnic Germans had been resettled; however, most resettled Germans did not live in the envisioned small farms, but in temporary camps or quarters in towns. Half a million residents of the annexed Polish territories, as well as from Slovenia, Alsace, Lorraine, and Luxembourg were deported to the General Government or sent to Germany as slave labour. Himmler instructed that the German nation should view all foreign workers brought to Germany as a danger to their German blood. In accordance with German racial laws, sexual relations between Germans and foreigners were forbidden as Rassenschande (race defilement).

On 20 July 1944, a group of German army officers led by Claus von Stauffenberg and including some of the highest-ranked members of the German armed forces attempted to assassinate Hitler, but failed to do so. The next day, Himmler formed a special commission that arrested over 5,000 suspected and known opponents of the regime. Hitler ordered brutal reprisals that resulted in the execution of more than 4,900 people. Though Himmler was embarrassed by his failure to uncover the plot, it led to an increase in his powers and authority.

By this time, Hitler had appointed Himmler as Reichsminister of the Interior, succeeding Frick, and Plenipotentiary General for Administration (Generalbevollmächtigter für die Verwaltung). In August 1944 Hitler authorised him to restructure the organisation and administration of the Waffen-SS, the army, and the police services. As head of the Reserve Army, Himmler was now responsible for prisoners of war. He was also in charge of the Wehrmacht penal system, and controlled the development of Wehrmacht armaments until January 1945.

On 6 June 1944, the Western Allied armies landed in northern France during Operation Overlord. In response, Army Group Upper Rhine (Heeresgruppe Oberrhein) group was formed to engage the advancing US 7th Army (under command of General Alexander Patch) and French 1st Army (led by General Jean de Lattre de Tassigny) in the Alsace region along the west bank of the Rhine. In late 1944, Hitler appointed Himmler commander-in-chief of Army Group Upper Rhine.

On 26 September 1944 Hitler ordered Himmler to create special army units, the Volkssturm ("People's Storm" or "People's Army"). All males aged sixteen to sixty were eligible for conscription into this militia, over the protests of Armaments Minister Albert Speer, who noted that irreplaceable skilled workers were being removed from armaments production. Hitler confidently believed six million men could be raised, and the new units would "initiate a people's war against the invader". These hopes were wildly optimistic. In October 1944, children as young as fourteen were being enlisted. Because of severe shortages in weapons and equipment and lack of training, members of the Volkssturm were poorly prepared for combat, and about 175,000 of them lost their lives in the final months of the war.

On 1 January 1945, Hitler and his generals launched Operation North Wind. The goal was to break through the lines of the US 7th Army and French 1st Army to support the southern thrust in the Ardennes offensive, the final major German offensive of the war. After limited initial gains by the Germans, the Americans halted the offensive. By 25 January, Operation North Wind had officially ended.

On 25 January 1945, despite Himmler's lack of military experience, Hitler appointed him as commander of the hastily formed Army Group Vistula (Heeresgruppe Weichsel) to halt the Soviet Red Army's Vistula–Oder Offensive into Pomerania. Himmler established his command centre at Schneidemühl, using his special train, Sonderzug Steiermark, as his headquarters. The train had only one telephone line, inadequate maps, and no signal detachment or radios with which to establish communication and relay military orders. Himmler seldom left the train, only worked about four hours per day, and insisted on a daily massage before commencing work and a lengthy nap after lunch.

General Heinz Guderian talked to Himmler on 9 February and demanded, that Operation Solstice, an attack from Pomerania against the northern flank of Marshal Georgy Zhukov's 1st Belarusian Front, should be in progress by the 16th. Himmler argued that he was not ready to commit himself to a specific date. Given Himmler's lack of qualifications as an army group commander, Guderian convinced himself that Himmler tried to conceal his incompetence. On 13 February Guderian met Hitler and demanded that General Walther Wenck be given a special mandate to command the offensive by Army Group Vistula. Hitler sent Wenck with a "special mandate", but without specifying Wenck's authority. The offensive was launched on 16 February 1945, but soon stuck in rain and mud, facing mine fields and strong antitank defenses. That night Wenck was severely injured in a car accident, but it is doubtful that he could have salvaged the operation, as Guderian later claimed. Himmler ordered the offensive to stop on the 18th by a "directive for regrouping". Hitler officially ended Operation Solstice on 21 February and ordered Himmler to transfer a corps headquarter and three divisions to Army Group Center.

In early 1945, the German war effort was on the verge of collapse and Himmler's relationship with Hitler had deteriorated. Himmler considered independently negotiating a peace settlement. His masseur, Felix Kersten, who had moved to Sweden, acted as an intermediary in negotiations with Count Folke Bernadotte, head of the Swedish Red Cross. Letters were exchanged between the two men, and direct meetings were arranged by Walter Schellenberg of the RSHA.

Hedwig and Margarete both remained loyal to Himmler. Writing to Gebhard in February 1945, Margarete said, "How wonderful that he has been called to great tasks and is equal to them. The whole of Germany is looking to him." Hedwig expressed similar sentiments in a letter to Himmler in January. Margarete and Gudrun left Gmund as Allied troops advanced into the area. They were arrested by American troops in Bolzano, Italy, and held in various internment camps in Italy, France, and Germany. They were brought to Nuremberg to testify at the trials and were released in November 1946. Gudrun emerged from the experience embittered by her alleged mistreatment and remained devoted to her father's memory. She later worked for the West German spy agency Bundesnachrichtendienst (BND) from 1961 to 1963.

Peter Longerich observes that Himmler's ability to consolidate his ever-increasing powers and responsibilities into a coherent system under the auspices of the SS led him to become one of the most powerful men in the Third Reich. Historian Wolfgang Sauer says that "although he was pedantic, dogmatic, and dull, Himmler emerged under Hitler as second in actual power. His strength lay in a combination of unusual shrewdness, burning ambition, and servile loyalty to Hitler." In 2008, the German news magazine Der Spiegel described Himmler as one of the most brutal mass murderers in history, and the architect of the Holocaust.