There are different methods of execution. People are shot by firing squads, killed by an "air hammer", and poisoned by gas in special gas chambers. Prisoners condemned to death by the Gestapo are murdered by the first two methods. The third method, the gas chamber, is employed for those who are ill or incapable of work and those who have been brought in transports especially for the purpose/Soviet prisoners of war, and, recently Jews.
Paradoxically, at the same time that Germany tried to rid itself of its Jews via forced emigration, its territorial expansions kept bringing more Jews under its control. Germany annexed Austria in March 1938 and the Sudetenland (now in the Czech Republic) in September 1938. It established control over the Protectorate of Bohemia and Moravia (now in the Czech Republic) in March 1939. When Germany invaded Poland on September 1, 1939, the “Jewish question” became urgent. When the division of Poland between Germany and the Soviet Union was complete, more than two million more Jews had come under German control. For a time, the Nazis considered shipping the Jews to the island of Madagascar, off the southeast coast of Africa, but discarded the plan as impractical; the Nazis had not prevailed in the Battle of Britain, the seas had become a war zone, and the resources required for such a massive deportation were scarce.
Ghettos were intended to be temporary until the Jews were deported to other locations, which never happened. Instead, the inhabitants were sent to extermination camps. The ghettos were, in effect, immensely crowded prisons serving as instruments of "slow, passive murder." Though the Warsaw Ghetto contained 30% of Warsaw's population, it occupied only 2.5% of the city's area, averaging over 9 people per room. Between 1940 and 1942, starvation and disease, especially typhoid, killed many in the ghettos. Over 43,000 Warsaw ghetto residents, or one in ten of the total population, died in 1941; in Theresienstadt, more than half the residents died in 1942.
Reality is at once more limited and more complex. On one level, mobile warfare was a faute de mieux improvisation that arose from the restrictions on conventional forces stipulated by the Treaty of Versailles. The German high command in the 1920s and 1930s also sought inspiration for the future in its own past–specifically in the ideas of Helmuth Karl von Moltke and Alfred von Schlieffen. Tanks, aircraft, and motor trucks were regarded as force multipliers facilitating traditional operational approaches. The aim of German military planners in both the Weimar Republic and the Third Reich was to achieve victory by enveloping enemy armies, threatening their lines of supply and communications, and forcing them to fight in an unexpected direction. The anticipated result would be quick, decisive victories for a state that since the days of Frederick the Great had been convinced of its inability to win a drawn-out war of attrition.
More than 40 sub-camps, exploiting the prisoners as slave laborers, were also founded, mainly as various sorts of German industrial plants and farms, between 1942 and 1944. The largest of them was called Buna (Monowitz, with ten thousand prisoners) and was opened by the camp administration in 1942 on the grounds of the Buna-Werke synthetic rubber and fuel plant, six kilometers from the Auschwitz camp. The factory was built during the war by the German IG Farbenindustrie cartel, and the SS supplied prisoner labor. On November 1943, the Buna sub-camp became the seat of the commandant of the third part of the camp, Auschwitz III, to which some other Auschwitz sub-camps were subordinated.