existed, like the racial exemption for members of the Abwehr from the Nazi Aryan-screening process, and then there was competition for resources which occurred throughout Nazi Germany's existence. On 27 September 1939, the SiPo became a part of the Reich Security Main Office (RSHA) under Heydrich: SD-Inland became Amt (department) III (internal intelligence – within Germany) under Otto Ohlendorf the Gestapo became Amt IV under Heinrich Müller the Kripo became Amt V under Arthur Nebe SD-Ausland became Amt VI (foreign intelligence – outside Germany) under Walter Schellenberg From February 1944 forward, the sections of the Abwehr were incorporated into Amt VI. The SD's relationship with the Einsatzgruppen The SD was the overarching agency under which the Einsatzgruppen der Sicherheitspolizei und des SD, also known as the Einsatzgruppen, was subordinated; this was one of the principal reasons for the later war-crimes indictment against the organization by the Allies. The Einsatzgruppen's part in the Holocaust has been well documented. Its mobile killing units were active in the implementation of the Final Solution (the plan for genocide) in the territories overrun by the Nazi war machine. This SD subsidiary worked closely with the Wehrmacht in persecuting Jews, communists, partisans, and other groups, as well. Starting with the invasion of Poland throughout the campaign in the East, the Einsatzgruppen ruthlessly killed anyone suspected of being an opponent of the regime, either real or imagined. The men of the Einsatzgruppen were recruited from the SD, Gestapo, Kripo, Orpo, and Waffen-SS. On 31 July 1941, Göring gave written authorisation to SD Chief Heydrich to ensure a government-wide cooperative effort in the implementation of the so-called Final Solution to the Jewish question in territories under German control. An SD headquarter's memorandum indicated that the SD was tasked to accompany military invasions and assist in pacification efforts. The memo explicitly stated: The SD will, where possible, follow up immediately behind the troops as they move in and, as in the Reich, will assume responsibility for the security of political life. Within the Reich, security measures are the responsibility of the Gestapo with SD cooperation. In occupied territory, measures will be under the direction of a senior SD commander; Gestapo officials will be allotted to individual Einsatzstäbe. It will be necessary to make available for special deployment a unit of Verfügungstruppe or Totenkopf [Death Head] formations. Correspondingly, SD affiliated units, including the Einsatzgruppen followed German troops into Austria, the