Guderian argued that the tank would be the decisive weapon of the next war. "If the tanks succeed, then victory follows", he wrote. In an article addressed to critics of tank warfare, he wrote "until our critics can produce some new and better method of making a successful land attack other than self-massacre, we shall continue to maintain our beliefs that tanks—properly employed, needless to say—are today the best means available for land attack." Addressing the faster rate at which defenders could reinforce an area than attackers could penetrate it during the First World War, Guderian wrote that "since reserve forces will now be motorized, the building up of new defensive fronts is easier than it used to be; the chances of an offensive based on the timetable of artillery and infantry co-operation are, as a result, even slighter today than they were in the last war." He continued, "We believe that by attacking with tanks we can achieve a higher rate of movement than has been hitherto obtainable, and—what is perhaps even more important—that we can keep moving once a breakthrough has been made."[154][l] Guderian additionally required that tactical radios be widely used to facilitate coordination and command by having one installed in all tanks.

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.
I've been to Auschwitz Birkenau. On a cold November day I stood at the spot where the "selections" were made. Large snowflakes fell out the the gray somber sky, and skeletal poplars or other similar trees stood in the distance. I was chilled to the bone with a coldness that did not leave me until long after I reboarded the heated bus that took me back to Krakow. Every civilized person should go there and see how apparently civilized people conducted the most inhumane and uncivilized rituals in all of recorded history.
Keneally’s novel is not the same as most novels. First it is a novel that deals with historical events. This is not too uncommon, though it is less common than non-historical fiction. What makes Schindler’s List special is its absolute accuracy. Keneally studiously sifted through all of the documents regarding Oskar Schindler and those he rescued, as well as interviewed many of those he rescued. The result is a nuanced portrait of Schindler that is imminently readable for any audience. His skill as a novelist allows Keneally to portray the horror of Goeth’s road paved with Jewish gravestones in a way that a strict historian could not. Where Keneally
It is badly lighted, full of draughts, with the brick floor covered by a layer of mud. The water is not drinkable; it has a revolting smell and often fails for many hours. The walls are covered by curious didactic frescoes: for example, there is the good Häftling [prisoner], portrayed stripped to the waist, about to diligently soap his sheared and rosy cranium, and the bad Häftling, with a strong Semitic nose and a greenish colour, bundled up in his ostentatiously stained clothes with a beret on his head, who cautiously dips a finger into the water of the washbasin. Under the first is written: "So bist du rein" (like this you are clean), and under the second, "So gehst du ein" (like this you come to a bad end); and lower down, in doubtful French but in Gothic script: "La propreté, c'est la santé" [cleanliness is health].[108]
From the earliest years of the Nazi regime, German authorities persecuted homosexuals and others whose behavior did not match prescribed social norms. German police officials targeted thousands of political opponents (including Communists, Socialists, and trade unionists) and religious dissidents (such as Jehovah's Witnesses). Many of these individuals died as a result of incarceration and maltreatment.
For the first time, camps were created specifically for Jews. Their conditions were far worse than other camps. The implicit intention was that the inmates would die there. Increasing numbers of Jews in Poland were relocated in ghettos. Non-Jewish Poles were also deported from their farms and villages to make room for ‘pure’ ethnic Germans to populate the new territory.

From the earliest years of the Nazi regime, German authorities persecuted homosexuals and others whose behavior did not match prescribed social norms. German police officials targeted thousands of political opponents (including Communists, Socialists, and trade unionists) and religious dissidents (such as Jehovah's Witnesses). Many of these individuals died as a result of incarceration and maltreatment.
After roll call, to the sound of "Arbeitskommandos formieren" ("form work details"), prisoners walked to their place of work, five abreast, to begin a working day that was normally 11 hours long—longer in summer and shorter in winter.[112] A prison orchestra, such as the Women's Orchestra of Auschwitz, was forced to play cheerful music as the workers left the camp. Kapos were responsible for the prisoners' behavior while they worked, as was an SS escort. Much of the work took place outdoors at construction sites, gravel pits, and lumber yards. No rest periods were allowed. One prisoner was assigned to the latrines to measure the time the workers took to empty their bladders and bowels.[111][113]
——— (2015). "Is the "Final Solution" Unique?". The Third Reich in History and Memory. London: Abacus. ISBN 978-0-349-14075-9. Revised and extended from Richard Evans (2011). "Wie einzigartig war die Ermordung der Juden durch die Nationalsocialisten?" in Günter Morsch and Bertrand Perz (eds). Neue Studien zu nationalsozialistischen Massentötungen durch Giftgas: Historische Bedeutung, technische Entwicklung, revisionistische Leugnung. Berlin: Metropol Verlag, pp. 1–10. ISBN 9783940938992

Many people ask, "Why didn't the Jews fight back?" Well, they did. With limited weapons and at a severe disadvantage, they found creative ways to subvert the Nazi system. They worked with partisans in the forests, fought to the last man in the Warsaw Ghetto, revolted at the Sobibor death camp, and blew up gas chambers at Auschwitz. Learn more about the resistance, both by Jews and non-Jews, to the Nazis.
The biggest mistakes made by most companies is that they have just one department (usually product and engineering) that puts Blitzkrieg tactics into practice. Most development teams now operate in sprints, deliver incremental customer value and use estimation methods to frequently update plans. However, very few companies have marketing or sales departments mirroring these methods, which leads to having parts of companies operating out-of-sync, at different paces and on disparate roadmaps. As demonstrated by the Germans during WWII, synchronization acts like a force multiplier, and today it can make the difference for companies competing in crowded markets.

Birkenau was also home to two so-called family camps.  Inmates from the Czech ‘model ghetto’ Theresienstadt were deported in several transports to Birkenau, where they lived in the ‘family camp’, did not have their heads shaved, were better fed, and were freed from slave labour assignments.  They were also allowed far more freedom to create and continue the cultural production that had been the hallmark of life in Theresienstadt.  As was the case in Theresienstadt, however, this ‘generosity’ was solely for the sake of propaganda, only temporarily delaying the killing.  There was in the family camp a small musical group that was frequently required to play for the SS while they were drinking, as well as during public beatings.  Perhaps the cruellest freedom allowed the Czech camp was the freedom to educate their children.  Lessons were given in reading and counting. There were also singing and recorder lessons, with a focus on Jewish and Czech music.  In two major killing waves of March and July 1944, the Theresienstadt family camp was liquidated.
His grip on German society tightened and those who publicly objected to Nazi policies were often sentenced to hard labour in the rapidly expanding concentration camp system. Jews were subjected to further laws restricting their rights, but rising anti-Semitism in Europe wasn’t limited to Germany. In the UK, Oswald Mosley’s British Union of Fascists gained support from sections of the public and press, even filling the Royal Albert Hall in April.
On 1 August 1940, Governor-General Hans Frank issued a decree requiring all Kraków Jews to leave the city within two weeks. Only those who had jobs directly related to the German war effort would be allowed to stay. Of the 60,000 to 80,000 Jews then living in the city, only 15,000 remained by March 1941. These Jews were then forced to leave their traditional neighbourhood of Kazimierz and relocate to the walled Kraków Ghetto, established in the industrial Podgórze district.[41][42] Schindler's workers travelled on foot to and from the ghetto each day to their jobs at the factory.[43] Enlargements to the facility in the four years Schindler was in charge included the addition of an outpatient clinic, co-op, kitchen, and dining room for the workers, in addition to expansion of the factory and its related office space.[44]