Frieser wrote that after the failure of the Schlieffen Plan in 1914, the German army concluded that decisive battles were no longer possible in the changed conditions of the twentieth century. Frieser wrote that the Oberkommando der Wehrmacht (OKW), which was created in 1938 had intended to avoid the decisive battle concepts of its predecessors and planned for a long war of exhaustion (ermattungskrieg). It was only after the improvised plan for the Battle of France in 1940 was unexpectedly successful, that the German General Staff came to believe that vernichtungskrieg was still feasible. German thinking reverted to the possibility of a quick and decisive war for the Balkan Campaign and Operation Barbarossa.[111]
You can visit the site on your own (highly recommended because you can go at your own pace, see what you want to see and have a much more meaningful experience) if you arrive before the guided tours start. Another option is to visit the Auschwitz II-Birkenau site first and then return after the guided tours finish to the first camp to avoid having to use the tour. The Auschwitz II-Birkenau site is open for visitors without the guide during the opening hours of the Memorial.

As some needed to point out, this is a fictionalized account of historical events and a genuine hero. Some historical persons were combined to make one character in the book and some time frames were condensed. Oskar Schindler was a deeply flawed man, brought to greatness by living through a time of horror in a position where he could make a small, but real difference. The condensations of those true events in this book are masterful. A great book!
In early 1942 the Nazis built killing centres at Treblinka, Sobibor, and Belzec in occupied Poland. The death camps were to be the essential instrument of the “final solution.” The Einsatzgruppen had traveled to kill their victims. With the killing centres, the process was reversed. The victims were taken by train, often in cattle cars, to their killers. The extermination camps became factories producing corpses, effectively and efficiently, at minimal physical and psychological cost to German personnel. Assisted by Ukrainian and Latvian collaborators and prisoners of war, a few Germans could kill tens of thousands of prisoners each month. At Chelmno, the first of the extermination camps, the Nazis used mobile gas vans. Elsewhere they built permanent gas chambers linked to the crematoria where bodies were burned. Carbon monoxide was the gas of choice at most camps. Zyklon-B, an especially lethal killing agent, was employed primarily at Auschwitz and later at Majdanek.
While Schindler operated two other factories in Krakow, only at Emalia did he employ Jewish workers who resided in the nearby Krakow ghetto. At its peak strength in 1944, Emalia employed 1,700 workers; at least 1,000 were Jewish forced laborers, whom the Germans had relocated from the Krakow ghetto after its liquidation in March 1943 to the forced labor camp and later concentration camp Krakau-Plaszow.
On the Eastern Front, the war did not bog down into trench warfare; German and Russian armies fought a war of manoeuvre over thousands of miles, which gave the German leadership unique experience not available to the trench-bound western Allies.[30] Studies of operations in the east led to the conclusion that small and coordinated forces possessed more combat power than large, uncoordinated forces. After the war, the Reichswehr expanded and improved infiltration tactics. The commander in chief, Hans von Seeckt, argued that there had been an excessive focus on encirclement and emphasized speed instead.[31] Seeckt inspired a revision of Bewegungskrieg (maneuver warfare) thinking and its associated Auftragstaktik, in which the commander expressed his goals to subordinates and gave them discretion in how to achieve them; the governing principle was "the higher the authority, the more general the orders were", so it was the responsibility of the lower echelons to fill in the details.[32] Implementation of higher orders remained within limits determined by the training doctrine of an elite officer-corps.[33] Delegation of authority to local commanders increased the tempo of operations, which had great influence on the success of German armies in the early war period. Seeckt, who believed in the Prussian tradition of mobility, developed the German army into a mobile force, advocating technical advances that would lead to a qualitative improvement of its forces and better coordination between motorized infantry, tanks, and planes.[34]
The gas chambers worked to their fullest capacity from April to July 1944, during the massacre of Hungary's Jews. Hungary was an ally of Germany during the war, but it had resisted turning over its Jews until Germany invaded that March.[177] A rail spur leading to crematoria II and III in Auschwitz II was completed that May, and a new ramp was built between sectors BI and BII to deliver the victims closer to the gas chambers.[178] On 29 April the first 1,800 Hungarian Jews arrived at the camp;[178] from 14 May until early July 1944, 437,000 Hungarian Jews, half the pre-war population, were deported to Auschwitz, at a rate of 12,000 a day for a considerable part of that period.[105] The crematoria had to be overhauled. Crematoria II and III were given new elevators leading from the stoves to the gas chambers, new grates were fitted, and several of the dressing rooms and gas chambers were painted. Cremation pits were dug behind crematorium V.[178] The last mass transports to arrive in Auschwitz were 60,000–70,000 Jews from the Łódź Ghetto, some 2,000 from Theresienstadt, and 8,000 from Slovakia.[166][179] The last selection took place on 30 October 1944.[162] Crematorium IV was demolished after the Sonderkommando revolt on 7 October 1944. The SS blew up crematorium V on 14 January 1945, and crematoria II and III on 20 January.[180]

By August 1944 there were 105,168 prisoners in Auschwitz whilst another 50,000 Jewish prisoners lived in Auschwitz’s satellite camps. The camp’s population grew constantly, despite the high mortality rate caused by exterminations, starvation, hard labor, and contagious diseases. Upon arrival at the platform in Birkenau, Jews were thrown out of their train cars without their belongings and forced to form two lines, men and women separately.

took unlimited advantage of their power.  They could beat us, torture us, even kill us without having to answer to anyone. Those who could not take this treatment threw themselves into the electric fence.  These suicides built up the rage of our tormentors even more.  One day, when the number of musicians who had killed themselves the night before was higher than usual, they called us all together and said 'sons of whores, I warn you all, if you keep leaping into the electric wire, I will kill you all like dogs'.
From this moment on, the Nazi regime adopted hundreds of laws restricting the rights and liberties of the Jewish people. Jews were expelled from the civil service and barred from entering particular professions, stripped of their citizenship, and forbidden from intermarrying or even having a relationship with anyone of “German or German-related blood”.
^ In The Drowned and the Saved (1986), Levi wrote that the concentration camps represented the epitome of the totalitarian system: "[N]ever has there existed a state that was really "totalitarian" ... Never has some form of reaction, a corrective of the total tyranny, been lacking, not even in the Third Reich or Stalin's Soviet Union: in both cases, public opinion, the magistrature, the foreign press, the churches, the feeling for justice and humanity that ten or twenty years of tyranny were not enough to eradicate, have to a greater or lesser extent acted as a brake. Only in the Lager [camp] was the restraint from below nonexistent, and the power of these small satraps absolute."[276]
On 27 January 1945, the 60th Army of the First Ukrainian Front, a unit of the Soviet Army, opened the gates and entered the Auschwitz camp complex. The liberators discovered around 7,000 surviving prisoners across the three main camps of Auschwitz I, Auschwitz-Birkenau and Buna Monowitz. Amongst the survivors were 180 children; 52 of them under the age of eight.

Living standards were not high in the late 1930s. Consumption of consumer goods had fallen from 71 percent in 1928 to 59 percent in 1938. The demands of the war economy reduced the amount of spending in non-military sectors to satisfy the demand for the armed forces. On 9 September, Göring as Head of the Reich Defence Council, called for complete "employment" of living and fighting power of the national economy for the duration of the war. Overy presents this as evidence that a "blitzkrieg economy" did not exist.[133]
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."

The concepts associated with the term blitzkrieg—deep penetrations by armour, large encirclements, and combined arms attacks—were largely dependent upon terrain and weather conditions. Where the ability for rapid movement across "tank country" was not possible, armoured penetrations often were avoided or resulted in failure. Terrain would ideally be flat, firm, unobstructed by natural barriers or fortifications, and interspersed with roads and railways. If it were instead hilly, wooded, marshy, or urban, armour would be vulnerable to infantry in close-quarters combat and unable to break out at full speed.[citation needed] Additionally, units could be halted by mud (thawing along the Eastern Front regularly slowed both sides) or extreme snow. Operation Barbarossa helped confirm that armour effectiveness and the requisite aerial support were dependent on weather and terrain.[68] It should however be noted that the disadvantages of terrain could be nullified if surprise was achieved over the enemy by an attack through areas considered natural obstacles, as occurred during the Battle of France when the German blitzkrieg-style attack went through the Ardennes.[69] Since the French thought the Ardennes unsuitable for massive troop movement, particularly for tanks, they were left with only light defences which were quickly overrun by the Wehrmacht. The Germans quickly advanced through the forest, knocking down the trees the French thought would impede this tactic.[70]
This is the true story of one remarkable man who outwitted Hitler and the Nazis to save more Jews from the gas chambers than any other during World War II. It is the story of Oscar Schindler who surfaced from the chaos of madness, spent millions bribing and paying off the SS and eventually risked his life to rescue 1200 Jews in the shadow of Auschwitz. In those years, millions of Jews died in the Nazi death camps, but Schindler's Jews miraculously survived.
In the decades since its liberation, Auschwitz has become a primary symbol of the Holocaust. Historian Timothy D. Snyder attributes this to the camp's high death toll and "unusual combination of an industrial camp complex and a killing facility", which left behind far more witnesses than single-purpose killing facilities such as Chełmno or Treblinka.[271] In 2005 the United Nations General Assembly designated 27 January, the date of the camp's liberation, as International Holocaust Remembrance Day.[272] Helmut Schmidt visited the site in November 1977, the first West German chancellor to do so, followed by his successor, Helmut Kohl, in November 1989.[273] In a written statement on the fiftieth anniversary of the liberation, Kohl described Auschwitz as the "darkest and most horrific chapter of German history".[274]

The enormous might of Hitler’s Wehrmacht in 1941 lay in the quality of its personnel, its optimized organizational decisions (regarding operations in tank groups, air fleets and other formations), its top-notch operational art and tactics and in the fact that many of its weapons systems and military technologies were well matched to the blitzkrieg’s objectives.
Use of bunkers I and 2 stopped in spring 1943 when the new crematoria were built, although bunker 2 became operational again in May 1944 for the murder of the Hungarian Jews.[47] Crematorium II, which had been designed as a mortuary with morgues in the basement and ground-level incinerators, was converted by installing gas-tight doors, vents for the Zyklon B to be dropped into the chamber, and ventilation equipment to remove the gas thereafter.[48] It went into operation in March 1943. Crematorium III was built using the same design. Crematoria IV and V, designed from the start as gassing centers, were also constructed that spring. By June 1943, all four crematoria were operational. Most of the victims were killed using these four structures.[49]
He went on to say that the use of tanks "left much to be desired...Fear of enemy action against the flanks of the advance, fear which was to prove so disastrous to German prospects in the west in 1940 and in the Soviet Union in 1941, was present from the beginning of the war." John Ellis further asserted that "...there is considerable justice in Matthew Cooper's assertion that the panzer divisions were not given the kind of strategic mission that was to characterize authentic armored blitzkrieg, and were almost always closely subordinated to the various mass infantry armies."
His tasks for the Abwehr included collecting information on railways, military installations, and troop movements, as well as recruiting other spies within Czechoslovakia, in advance of a planned invasion of the country by Nazi Germany.[9] He was arrested by the Czech government for espionage on 18 July 1938 and immediately imprisoned, but was released as a political prisoner under the terms of the Munich Agreement, the instrument under which the Czech Sudetenland was annexed into Germany on 1 October.[10][11] Schindler applied for membership in the Nazi Party on 1 November and was accepted the following year.[12]