Ethnic cleansing was to be conducted systematically against the Polish people. On 7 September 1939, Sicherheitsdienst head Reinhard Heydrich stated that all Polish nobles, clergy, and Jews were to be murdered. On 12 September, Wehrmacht chief of staff Wilhelm Keitel added Poland's intelligentsia to the list. On 15 March 1940, SS chief Heinrich Himmler stated: "All Polish specialists will be exploited in our military-industrial complex. Later, all Poles will disappear from this world. It is imperative that the great German volk consider the elimination of all Polish people as its chief task." At the end of 1940, Hitler confirmed the plan to liquidate "all leading elements in Poland". After Germany lost the war, the International Military Tribunal at the Nuremberg Trials and Poland's Supreme National Tribunal concluded that the aim of Nazi German policies in Poland – the extermination of Poles and Jews – had "all the characteristics of genocide in the biological meaning of this term." 1939 September Campaign Less than a year before the outbreak of war, on 1 October 1938, the German Army rolled into the Sudetenland in accordance with the Munich Agreement. The operation was completed by 10 October. Two weeks later, on 24 October 1938, Ribbentrop summoned Polish ambassador to Berchtesgaden and presented him with Hitler's Gesamtlösung regarding the Polish Corridor and the Free City of Danzig. Ambassador Lipski refused. Three days later, the first mass deportation of Polish nationals from Nazi Germany began. It was the eviction of Jews who settled in Germany with Polish passports. On 9–10 November 1938, the Kristallnacht attack was carried out by the SA paramilitary forces; thousands of Jews holding Polish citizenship were rounded up and sent via rail to the Polish border and to the Nazi concentration camps. The round-up included 2,000 ethnic Poles living and working there. Also, before the invasion of Poland, the Nazis prepared a detailed list identifying more than 61,000 Polish targets (mostly civilian) by name, with the help of the German minority living in the Second Polish Republic. The list was printed secretly as the called Sonderfahndungsbuch Polen (Special Prosecution Book–Poland), and composed only of names and birthdates. It included politicians, scholars, actors, intelligentsia, doctors, lawyers, nobility, priests, officers and numerous othersas the means at the disposal of the SS paramilitary death squads aided by Selbstschutz executioners. The first Einsatzgruppen of World War II were formed by the SS in the course of