developed an organization of agents and informants throughout the Reich and later throughout the occupied territories, all part of the development of an extensive SS state and a totalitarian regime without parallel. The organization consisted of a few hundred full-time agents and several thousand informants. Historian George C. Browder writes that SD regiments were comparable to SS regiments, in that: SD districts (Bezirke) emerged covering several Party circuits (Kreis) or an entire district (Gau). Below this level, SD sub-districts (Unterbezirke) slowly developed. They were originally to cover a single Kreis, and, in turn, to be composed of wards (Revier), but such an ambitious network never emerged. Eventually, the SD-sub-districts acquired the simple designation of 'outposts' (Aussenstellen) as the lowest level-office in the field structure. The SD was mainly an information-gathering agency, while the Gestapo—and to a degree the Criminal Police (Kriminalpolizei or Kripo)—was the executive agency of the political-police system. The SD and Gestapo did have integration through SS members holding dual positions in each branch. Nevertheless, there was some jurisdictional overlap and operational conflict between the SD and Gestapo. In addition, the Criminal Police kept a level of independence since its structure had been longer-established. As part and parcel of its intelligence operations, the SD carefully tracked foreign opinion and criticism of Nazi policies, censoring when necessary and likewise publishing hostile political cartoons in the SS weekly magazine, Das Schwarze Korps. An additional task assigned to the SD and the Gestapo involved keeping tabs on the morale of the German population at large, which meant they were charged to "carefully supervise the political health of the German ethnic body" and once any symptoms of "disease and germs" appeared, it was their job to "remove them by every appropriate means". Regular reports—including opinion polls, press dispatches, and information bulletins were established. These were monitored and reviewed by the head of the Inland-SD, Otto Ohlendorf (responsible for intelligence and security within Germany) and by the former Heidelberg professor and SD member . This activity aimed to control and assess the "life domain" or Lebensgebiet of the German population. Gathered information was then distributed by the SD through secret internal political reports entitled Meldungen aus dem Reich (reports from the Reich) to the upper echelons of the Nazi Party, enabling Hitler's régime to evaluate the general morale and attitude of the German people so they could be manipulated by the Nazi propaganda