Though the Nazis tried to keep operation of camps secret, the scale of the killing made this virtually impossible. Eyewitnesses brought reports of Nazi atrocities in Poland to the Allied governments, who were harshly criticized after the war for their failure to respond, or to publicize news of the mass slaughter. This lack of action was likely mostly due to the Allied focus on winning the war at hand, but was also a result of the general incomprehension with which news of the Holocaust was met and the denial and disbelief that such atrocities could be occurring on such a scale.
During this period, all the war's major combatants developed mechanized force theories. Theories of the Western Allies differed substantially from the Reichswehr's. British, French, and American doctrines broadly favored a more set-piece battle, less combined arms focus, and less focus on concentration. Early Reichswehr periodicals contained many translated works, though they were often not adopted. Technical advances in foreign countries were, however, observed and used in-part by the Weapons Office. Foreign doctrines are widely considered to have had little serious influence.
The direct reason for the establishment of the camp was the fact that mass arrests of Poles were increasing beyond the capacity of existing "local" prisons. The first transport of Poles reached KL Auschwitz from Tarnów prison on June 14, 1940. Initially, Auschwitz was to be one more concentration camp of the type that the Nazis had been setting up since the early 1930s. It functioned in this role throughout its existence, even when, beginning in 1942, it also became the largest of the death camps.
Measuring 270 by 490 metres (890 ft × 1,610 ft), the camp was larger than Auschwitz I. By the end of 1944, it housed 60 barracks measuring 17.5 by 8 metres (57 ft × 26 ft), each with a day room and a sleeping room containing 56 three-tiered wooden bunks.[58] IG Farben paid the SS three or four Reichsmark for nine- to eleven-hour shifts from each worker.[59] In 1943–1944, about 35,000 inmates worked at the plant; 23,000 (32 a day on average) died as a result of malnutrition, disease, and the workload.[60] Deaths and transfers to Birkenau reduced the population by nearly a fifth each month;[61] site managers constantly threatened inmates with the gas chambers.[59] In addition to the Auschwitz inmates, who comprised a third of the work force, IG Auschwitz employed slave laborers from all over Europe.[62] When the camp was liquidated in January 1945, 9,054 out of the 9,792 inmates were Jews.[63]
After invading Poland, the Germans established ghettos in the incorporated territories and General Government to confine Jews.[143] The ghettos were formed and closed off from the outside world at different times and for different reasons.[196][197] For example, the Łódź ghetto was closed in April 1940,[143] to force the Jews inside to give up money and valuables;[198] the Warsaw ghetto was closed for health considerations (for the people outside, not inside, the ghetto),[199] but this did not happen until November 1940;[143] and the Kraków ghetto was not established until March 1941.[200] The Warsaw Ghetto contained 380,000 people[143] and was the largest ghetto in Poland; the Łódź Ghetto was the second largest,[201] holding between 160,000[202] to 223,000.[203] Because of the long drawn-out process of establishing ghettos, it is unlikely that they were originally considered part of a systematic attempt to eliminate Jews completely.[204]
Blitzkrieg was based on speed, co-ordination and movement; the major science of this approach was the ability to get large mobile forces through weak points in the enemies defences and then cause damage when behind his static lines. With large formations cut off from communication and logistics, pressure could then be put on interior defences. Its aim was to create panic amongst the civilian population. A civil population on the move can be absolute havoc for a defending army trying to get its forces to the war front. With so much focus placed on the frontline, if this could be penetrated then the ensuing doubt, confusion and rumour were sure to paralyse both the government and the defending military.
Under the Nuremberg Laws, Jews became routine targets for stigmatization and persecution. This culminated in Kristallnacht, or the “night of broken glass” in November 1938, when German synagogues were burned and windows in Jewish shops were smashed; some 100 Jews were killed and thousands more arrested. From 1933 to 1939, hundreds of thousands of Jews who were able to leave Germany did, while those who remained lived in a constant state of uncertainty and fear.
While the Nazis murdered other national and ethnic groups, such as a number of Soviet prisoners of war, Polish intellectuals, and gypsies, only the Jews were marked for systematic and total annihilation. Jews were singled out for "Special Treatment" (Sonderbehandlung), which meant that Jewish men, women and children were to be methodically killed with poisonous gas. In the exacting records kept at the Auschwitz death camp, the cause of death of Jews who had been gassed was indicated by "SB," the first letters of the two words that form the German term for "Special Treatment."
From the overpass, the road leads directly to the Gate of Death. The railroad spur line that goes through the gate house begins on the left side of the gate, about a quarter of a mile away, and curves around until it forms a straight line in front of the gate. Trains coming from the west entered the Birkenau camp from tracks on the left side of the gate, as you are facing it, and did not pass the railroad station in the town of Auschwitz. Trains coming from the opposite direction passed the train station in Auschwitz and then entered the camp on the spur line. The train tracks end only a few yards from two of the gas chambers inside the Birkenau camp.
German volunteers first used armor in live field conditions during the Spanish Civil War of 1936. Armor commitments consisted of Panzer Battalion 88, a force built around three companies of PzKpfw I tanks that functioned as a training cadre for Nationalists. The Luftwaffe deployed squadrons of fighters, dive-bombers, and transports as the Condor Legion. Guderian called the tank deployment "on too small a scale to allow accurate assessments to be made." The true test of his "armored idea" would have to wait for the Second World War. However, the German Air Force also provided volunteers to Spain to test both tactics and aircraft in combat, including the first combat use of the Stuka.
[t]hroughout the Polish Campaign, the employment of the mechanised units revealed the idea that they were intended solely to ease the advance and to support the activities of the infantry....Thus, any strategic exploitation of the armoured idea was still-born. The paralysis of command and the breakdown of morale were not made the ultimate aim of the ... German ground and air forces, and were only incidental by-products of the traditional maneuvers of rapid encirclement and of the supporting activities of the flying artillery of the Luftwaffe, both of which had as their purpose the physical destruction of the enemy troops. Such was the Vernichtungsgedanke of the Polish campaign.[82]
Blitzkrieg sought decisive actions at all times. To this end, the theory of a schwerpunkt (focal point) developed; it was the point of maximum effort. Panzer and Luftwaffe forces were used only at this point of maximum effort whenever possible. By local success at the schwerpunkt, a small force achieved a breakthrough and gained advantages by fighting in the enemy's rear. It is summarized by Guderian as "Nicht kleckern, klotzen!" ("Don't tickle, smash!")
^ Some of the military historians who consider Operation Citadel, or at least the southern pincer, as envisioning a blitzkrieg attack or state it was intended as such are: Lloyd Clark (Clark 2012, p. 187), Roger Moorhouse (Moorhouse 2011, p. 342), Mary Kathryn Barbier (Barbier 2002, p. 10), David Glantz (; Glantz & House 2004, pp. 63, 78, 149, 269, 272, 280), Jonathan House (Glantz & House 2004, pp. 63, 78, 149, 269, 272, 280), Hedley Paul Willmott (Willmott 1990, p. 300), Oscar Pinkus (Pinkus 2005, p. 35) and others.
Throughout the spring and summer of 1940, the German army expanded Hitler’s empire in Europe, conquering Denmark, Norway, the Netherlands, Belgium, Luxembourg and France. Beginning in 1941, Jews from all over the continent, as well as hundreds of thousands of European Gypsies, were transported to the Polish ghettoes. The German invasion of the Soviet Union in June 1941 marked a new level of brutality in warfare. Mobile killing units called Einsatzgruppenwould murder more than 500,000 Soviet Jews and others (usually by shooting) over the course of the German occupation.
In the German parliament, the Nazi party, led by Adolf Hitler, gained popularity. The number of seats Nazis controlled in the parliament rose from 12 in 1928 to 230 in 1932, making them the largest political party. The strong showing guaranteed the Nazi party would need to be part of any political coalition. Believing he could check Hitler’s ambition, President Hindenburg reluctantly made Hitler the Chancellor of Germany on January 30, 1933.
Military trucks loaded with bread arrived on 28 January, and volunteers began to offer first aid and improvised assistance the following week.[249] The liberation of the camp received little Western press attention at the time. Laurence Rees attributes this to three factors: the previous discovery of similar crimes at the Majdanek concentration camp, competing news from the Allied summit at Yalta, and the Soviet Union's Marxist presentation of the camp "as the ultimate capitalist factory where the workers were dispensible", combined with its interest in minimizing attention to Jewish suffering.[252]
In 2018 the Polish government passed an amendment to its Act on the Institute of National Remembrance, making it a criminal offence to make false suggestions of Polish complicity in the Holocaust, which would include referring to Auschwitz and other camps as "Polish death camps".[303] After discussions with Israel's prime minister, amid international concern that the law would stifle research, the Polish government adjusted the amendment so that anyone falsely accusing Poland of complicity would be guilty only of a civil offence.[304]

As a member of the Nazi Party and the Abwehr intelligence service, Schindler was in danger of being arrested as a war criminal. Bankier, Stern, and several others prepared a statement he could present to the Americans attesting to his role in saving Jewish lives. He was also given a ring, made using gold from dental work taken out of the mouth of Schindlerjude Simon Jeret. The ring was inscribed "Whoever saves one life saves the world entire."[77] To escape being captured by the Russians, Schindler and his wife departed westward in their vehicle, a two-seater Horch, initially with several fleeing German soldiers riding on the running boards. A truck containing Schindler's mistress Marta, several Jewish workers, and a load of black market trade goods followed behind. The Horch was confiscated by Russian troops at the town of Budweis, which had already been captured by Russian troops. The Schindlers were unable to recover a diamond that Oskar had hidden under the seat.[78] They continued by train and on foot until they reached the American lines at the town of Lenora, and then travelled to Passau, where an American Jewish officer arranged for them to travel to Switzerland by train. They moved to Bavaria in Germany in the fall of 1945.[79]
The Sturmabteilung (S.A., Storm Troopers), a grassroots organization, helped Hitler undermine the German democracy. The Gestapo (Geheime Staatspolizei, Secret State Police), a force recruited from professional police officers, was given complete freedom to arrest anyone after February 28. The Schutzstaffel (SS, Protection Squad) served as Hitler’s personal bodyguard and eventually controlled the concentration camps and the Gestapo. The Sicherheitsdienst des Reichsführers­SS (S.D., Security Service of the SS) functioned as the Nazis' intelligence service, uncovering enemies and keeping them under surveillance.

^ After the invasion of Poland, the Germans planned to set up a Jewish reservation in southeast Poland around the transit camp in Nisko, but the "Nisko Plan" failed, in part because it was opposed by Hans Frank, the new Governor-General of the General Government territory.[147][148][149] Adolf Eichmann was assigned to remove Jews from Germany, Austria, and the Protectorate of Bohemia and Moravia to the reservation.[150] Although the idea was to remove 80,000 Jews, Eichmann had managed to send only 4,700 by March 1940, and the plan was abandoned in April.[151] By mid-October the idea of a Jewish reservation had been revived by Heinrich Himmler, because of the influx of Germanic settlers into the Warthegau.[152] Resettlement continued until January 1941 under Odilo Globocnik,[153] and included both Jews and Poles.[154] By that time 95,000 Jews were already concentrated in the area,[155] but the plan to deport up to 600,000 additional Jews to the Lublin reservation failed for logistical and political reasons.[156]
Use of armoured forces was crucial for both sides on the Eastern Front. Operation Barbarossa, the German invasion of the Soviet Union in 1941, involved a number of breakthroughs and encirclements by motorised forces. Its goal according to Führer Directive 21 (18 December 1940) was "to destroy the Russian forces deployed in the West and to prevent their escape into the wide-open spaces of Russia."[90] The Red Army was to be destroyed west of the Dvina and Dnieper rivers, which were about 500 kilometres (310 mi) east of the Soviet border, to be followed by a mopping-up operation. The surprise attack resulted in the near annihilation of the Voyenno-Vozdushnye Sily (VVS, Soviet Air Force) by simultaneous attacks on airfields,[91] allowing the Luftwaffe to achieve total air supremacy over all the battlefields within the first week.[92][93] On the ground, four German panzer groups outflanked and encircled disorganised Red Army units, while the marching infantry completed the encirclements and defeated the trapped forces.[94] In late July, after 2nd Panzer Group (commanded by Guderian) captured the watersheds of the Dvina and Dnieper rivers near Smolensk, the panzers had to defend the encirclement, because the marching infantry divisions were still hundreds of kilometres to the west.[91]

Infiltration tactics invented by the German Army during the First World War became the basis for later tactics. German infantry had advanced in small, decentralised groups which bypassed resistance in favour of advancing at weak points and attacking rear-area communications. This was aided by co-ordinated artillery and air bombardments, and followed by larger infantry forces with heavy guns, which destroyed centres of resistance. These concepts formed the basis of the Wehrmacht's tactics during the Second World War.
In her new book, Not for the Faint of Heart, Ambassador Sherman takes readers inside the world of international diplomacy and into the mind of one of our most effective negotiators―often the only woman in the room. She discusses the core values that have shaped her approach to work and leadership: authenticity, effective use of power and persistence, acceptance of change, and commitment to the team. She shows why good work in her field is so hard to do, and how we can learn to apply core skills of diplomacy to the challenges in our own lives.
In the 1960s, Alan Milward developed a theory of blitzkrieg economics, that Germany could not fight a long war and chose to avoid comprehensive rearmament and armed in breadth, to win quick victories. Milward described an economy positioned between a full war economy and a peacetime economy.[124][125] The purpose of the blitzkrieg economy was to allow the German people to enjoy high living standards in the event of hostilities and avoid the economic hardships of the First World War.[126]

Timothy D. Snyder (Bloodlands: Europe Between Hitler and Stalin, 2010): "In this book the term Holocaust signifies the final version of the Final Solution, the German policy to eliminate the Jews of Europe by murdering them. Although Hitler certainly wished to remove the Jews from Europe in a Final Solution earlier, the Holocaust on this definition begins in summer 1941, with the shooting of Jewish women and children in the occupied Soviet Union. The term Holocaust is sometimes used in two other ways: to mean all German killing policies during the war, or to mean all oppression of Jews by the Nazi regime. In this book, Holocaust means the murder of the Jews in Europe, as carried out by the Germans by guns and gas between 1941 and 1945."[23]
^ Some of the military historians who consider Operation Citadel, or at least the southern pincer, as envisioning a blitzkrieg attack or state it was intended as such are: Lloyd Clark (Clark 2012, p. 187), Roger Moorhouse (Moorhouse 2011, p. 342), Mary Kathryn Barbier (Barbier 2002, p. 10), David Glantz (; Glantz & House 2004, pp. 63, 78, 149, 269, 272, 280), Jonathan House (Glantz & House 2004, pp. 63, 78, 149, 269, 272, 280), Hedley Paul Willmott (Willmott 1990, p. 300), Oscar Pinkus (Pinkus 2005, p. 35) and others.

The technique of Blitzkrieg is based on the principle of surprise as opposed to an effort to crush an enemy by bringing an overwhelming superiority in numbers and armament to bear against him. It can be likened to the swift and deadly thrust of a rapier as opposed to the crushing blow of a battle-axe or a war club. The objective is not the enemy civilian population but the enemy armed forces, both ground and air.
In October 1941, work began on Auschwitz II, or Birkenau, located outside the nearby village of Brzezinka. There the SS later developed a huge concentration camp and extermination complex that included some 300 prison barracks; four large so-called Badeanstalten (German: “bathhouses”), in which prisoners were gassed to death; Leichenkeller (“corpse cellars”), in which their bodies were stored; and Einäscherungsöfen (“cremating ovens”). Another camp (Buna-Monowitz), near the village of Dwory, later called Auschwitz III, became in May 1942 a slave-labour camp supplying workers for the nearby chemical and synthetic-rubber works of IG Farben. In addition, Auschwitz became the nexus of a complex of 45 smaller subcamps in the region, most of which housed slave labourers. During most of the period from 1940 to 1945, the commandant of the central Auschwitz camps was SS-Hauptsturmführer (Capt.) and ultimately SS-Obersturmbannführer (Lieut. Col.) Rudolf Franz Hoess (Höss).
The next blow came a month later. In the early morning darkness of May 10, the Germans unleashed their Blitzkrieg against the Netherlands and Belgium. The attack sent the defending troops reeling. The roads overflowed with refugees fleeing the front. French and British troops rushing to the rescue were caught in the headlong retreat and pushed back. German dive-bombers - the Stukas - filled the sky, strafing the retreating mix of civilians and soldiers with machine gun and bomb. The Allies fought valiantly but in vain - the German war machine advanced unperturbed. In England, the invasion forced Prime Minister Neville Chamberlain to resign, to be replaced by Winston Churchill.
During this period, all the war's major combatants developed mechanized force theories. Theories of the Western Allies differed substantially from the Reichswehr's. British, French, and American doctrines broadly favored a more set-piece battle, less combined arms focus, and less focus on concentration. Early Reichswehr periodicals contained many translated works, though they were often not adopted. Technical advances in foreign countries were, however, observed and used in-part by the Weapons Office. Foreign doctrines are widely considered to have had little serious influence.
A second roll call took place at seven in the evening after the long day's work.[118] Prisoners might be hanged or flogged in the course of it. If a prisoner was missing, the others had to remain standing until he or she was found or the reason for the absence discovered, even if it took hours. On 6 July 1940, roll call lasted 19 or 20 hours because of the escape of a Polish prisoner, Tadeusz Wiejowski; following another escape in 1941, a group of prisoners was sent to block 11 to be starved to death.[119] After roll call, prisoners were allowed to retire to their blocks for the night and receive their bread rations and water. Curfew was at nine o'clock. Inmates slept in long rows of brick or wooden bunks, lying in and on their clothes and shoes to prevent them from being stolen.[120] The wooden bunks had blankets and paper mattresses filled with wood shavings; in the brick barracks, inmates lay on straw.[121] According to Nyiszli:

The German offensive to capture Stalingrad began in August 1942, using the 6th Army and elements of the 4th Panzer Army. The attack was supported by intensive Luftwaffe bombing that reduced much of the city to rubble. The fighting degenerated into house-to-house fighting; both sides poured reinforcements into the city. By mid-November 1942, the Germans had pushed the Soviet defenders back at great cost into narrow zones along the west bank of the Volga River.

Having achieved a breakthrough into the enemy's rear areas, German forces attempted to paralyze the enemy's decision making and implementation process. Moving faster than enemy forces, mobile forces exploited weaknesses and acted before opposing forces could formulate a response. Guderian wrote that "Success must be exploited without respite and with every ounce of strength, even by night. The defeated enemy must be given no peace."

In addition to workers, Schindler moved 250 wagon loads of machinery and raw materials to the new factory.[68] Few if any useful artillery shells were produced at the plant. When officials from the Armaments Ministry questioned the factory's low output, Schindler bought finished goods on the black market and resold them as his own.[69] The rations provided by the SS were insufficient to meet the needs of the workers, so Schindler spent most of his time in Kraków, obtaining food, armaments, and other materials. His wife Emilie remained in Brünnlitz, surreptitiously obtaining additional rations and caring for the workers' health and other basic needs.[70][71] Schindler also arranged for the transfer of as many as 3,000 Jewish women out of Auschwitz to small textiles plants in the Sudetenland in an effort to increase their chances of surviving the war.[72][73]