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.[42] 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).[43] 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.