Yugoslavia and Greece were invaded in April 1941 and surrendered before the end of the month. Germany and Italy divided Greece into occupation zones but did not eliminate it as a country. Yugoslavia, home to around 80,000 Jews, was dismembered; regions in the north were annexed by Germany and regions along the coast made part of Italy. The rest of the country was divided into the Independent State of Croatia, nominally an ally of Germany, and Serbia, which was governed by a combination of military and police administrators. According to historian Jeremy Black, Serbia was declared free of Jews in August 1942. Croatia's ruling party, the Ustashe, killed the country's Jews, and killed or expelled Orthodox Christian Serbs and Muslims. Jews and Serbs alike were "hacked to death and burned in barns", according to Black. One difference between the Germans and Croatians was that the Ustashe allowed its Jewish and Serbian victims to convert to Catholicism so they could escape death.
Despite the continuing war with Great Britain, German forces invaded the Soviet Union in June 1941. At first, the German Blitzkrieg seemed to succeed. Soviet forces were driven back more than 600 miles to the gates of Moscow, with staggering losses. In December 1941, Hitler unilaterally declared war on the United States, which consequently added its tremendous economic and military power to the coalition arrayed against him. A second German offensive against the Soviet Union in 1942 brought German forces in the east to the shores of the Volga River and the city of Stalingrad. However, the Soviet Union launched a counteroffensive in November 1942, trapping and destroying an entire German army at Stalingrad.
At dawn on 10 May, the Germans began an invasion of Belgium and the Netherlands. Accordingly, convinced that they were facing a repeat of the German strategy of 1914, Allied commanders moved the bulk of their forces from the Franco-Belgian border into defensive positions within Belgium to await the continuation of the German attack. In so doing, they fell right into Hitler's trap.
The gate house was built in 1943, long after the Birkenau camp was first opened. The first inmates, who were Soviet Prisoners of War, arrived at Birkenau on October 7, 1941. At first, the gate shown in the photo above was for trucks and pedestrians. Railroad tracks were not laid through the gate until the Spring of 1944, just before transports of Hungarian Jews began to arrive. According to the Auschwitz Museum, 434,351 of these Hungarian Jews were not registered at Birkenau; instead, they were gassed immediately upon arrival. At the height of the deportation of the Hungarian Jews, during a 10 week period, up to 12,000 Jews were gassed and burned each day.
Moreover, one of the key successes of the Blitzkrieg was its use of FM radios – these enabled the forces that had broken through the lines to inform support units as to their progress and relay information on what was behind enemy lines. This superior intelligence was a crucial tool at the German’s disposal and allowed them to perform far more organised assaults on the enemy. The communication technology promoted quick, decentralised decision-making that was key to this speed focused approach.
Schindler joined the separatist Sudeten German Party in 1935. Although he was a citizen of Czechoslovakia, Schindler became a spy for the Abwehr, the military intelligence service of Nazi Germany, in 1936. He was assigned to Abwehrstelle II Commando VIII, based in Breslau. He later told Czech police that he did it because he needed the money; by this time Schindler had a drinking problem and was chronically in debt.