Austrian Anschluss had precipitated this crisis to some degree, ensued. The Sudetenland Crisis came to an end when Neville Chamberlain and Hitler signed the Munich Agreement on 29 September 1938, effectively ceding the Sudetenland to Nazi Germany. Involvement in international affairs by the SD certainly did not end there and the agency remained active in foreign operations to such a degree that the head of the Reich Foreign Ministry office, Joachim von Ribbentrop, complained of their meddling, since Hitler would apparently make decisions based on SD reports without consulting him. According to historian Richard Breitman, there was animosity between the SS leadership and Ribbentrop's Foreign Office atop their "jurisdictional disputes". Intrigue against Poland Aside from its participation in diminishing the power of the SA and its scheme to kill Ernst Roehm, the SD took part in international intrigue, first by activities in Austria, again in Czechoslovakia, and then by helping provoke the "reactive" war against Poland. Code-named "Operation Himmler" and part of Hitler's plan to justify an attack upon Poland, the SD's clandestine activity for this mission included faking a Polish attack against "innocent Germans" at a German radio station in Gleiwitz. The SD took concentration-camp inmates condemned to die, and fitted them with Polish Army uniforms which Heinz Jost had acquired from Admiral Wilhelm Canaris' Abwehr (military intelligence). Leading this mission and personally selected by Heydrich was SS veteran Alfred Naujocks, who later reported during a War Criminal proceeding that he brought a Polish-speaking German along so he could broadcast a message in Polish from the German radio station "under siege" to the effect that it was time for an all out confrontation between Germans and Poles. To add documented proof of this attack, the SD operatives placed the fictitious Polish troops (killed by lethal injection, then shot for appearance) around the "attacked" radio station with the intention of taking members of the press to the site of the incident. Immediately in the wake of the staged incidents on 1 September 1939, Hitler proclaimed from the Reichstag in a famous radio address that German soldiers had been "returning" fire since 5:45 in the morning, setting the Second World War in Europe into motion. Tasks and general structure The SD was tasked with the detection of actual or potential enemies of the Nazi leadership and the neutralization of such opposition, whether internal or external. To fulfill this task, the SD