The Freikorp's ranks were filling up rather fast. It had 10,000-15,000 members by 20 September 1938, 26,000 members by 22 September 1938, with many more deserters coming after the general Czechoslovak mobilization that took place on 23 September 1938 and reaching 41.000 by 2 October 1938. Apart from Konrad Henlein, its leadership consisted of K.H.Frank (vice-commander in chief), Hans Blaschek (2nd vice-commander in chief), until-then SdP's senator Anton Pfrogner (chief of staff). Freikorp's headquarters was situated in a castle near Bayreuth, Germany. Freikorp's was divided into 4 groups alongside the whole German-Czechoslovak border. Groups were further divided into battalions and companies. Depending on the border length and local conditions, there were also sometimes "sections" as an interstage between the battalion and companies.