on 15 November 1939 as Eicke's successor to the post of Concentration Camps Inspector. As the Concentration Camps Inspector, Glücks was directly subordinate to Himmler—as Eicke had been—but, in contrast with the warm relation between Himmler and the older Eicke, Glücks only rarely met with Himmler, who promoted him not for his leadership competencies but for his ability to "provide the administrative continuity" with Eicke's policies. Less a reflection of Glücks's energy and aptitude, his rise in power was more about Eicke's ineffectual managerial skill, according to historian Michael Thad Allen. Glücks made few changes once taking over, leaving the organizational structure intact as Eicke had set it up; the same uncompromising rigidity was carried out at the camps—there was no rehabilitation and no effort to exploit the working potential of inmates. Because Glücks never served inside a concentration camp, some senior camp members were suspicious and considered him nothing more than a desk-side bureaucrat. In terms of his leadership style, he preferred men of action and allowed them some autonomy in operating their respective camps. Historian Robert Lewis Koehl described Glücks as "unimaginative, lacking in energy if not lazy," and even "unperceptive," which may account to some extent for his hands-off approach. Glücks's responsibilities at first mainly covered the use of concentration camp inmates for forced labour. In this phase, he urged camp commandants to lower the death rate in the camps, as it went counter to the economic objectives his department was to fulfill. Other orders of his were to ask for the inmates to be made to work continuously. At the same time, it was Glücks who recommended on 21 February 1940, Auschwitz, a former Austrian cavalry barracks, as a suitable site for a new concentration camp to Himmler and Reinhard Heydrich. Glücks accompanied Himmler and several chief directors of I.G. Farben on 1 March 1941 for a visit to Auschwitz, where it was decided that the camp would be expanded to accommodate up to 30,000 prisoners, an additional camp would be established at nearby Birkenau capable of housing 100,000 POWs, and that a factory would be constructed in proximity with the camp prisoners placed at I.G. Farben's disposal. On 20 April 1941 Glücks was promoted to the rank of an SS-Brigadeführer and in November 1943, Glücks was made SS-Gruppenführer and a Generalleutnant of the Waffen-SS. From 1942 on, Glücks was increasingly involved in the implementation of