From 1935 to 1937 , he was head of the Gestapo in Breslau . Thereafter , he was commander of the '' Führerschule '' of the '' Sicherheitspolizei '' and the SD , an institution that trained future leaders of the '' Schutzstaffel '' ( SS ) , '' Sicherheitsdienst '' ( SD ) , and '' Sicherheitspolizei '' ( '' SiPo '' ) , in Berlin-Charlottenburg until March 1941 . Hellwig was the instructor and commander of one of the '' Einsatzkommandos '' of the '' Einsatzgruppe '' under Udo von Woyrsch , which prepared the Gleiwitz incident as part of Operation Tannenberg before the Invasion of Poland . After a short time as head of the Gestapo in Katowice in 1940 , he worked as Chief of the '' SiPo '' and the SD ( , IdS ) in Stettin
Operation Tannenberg
Operation Tannenberg
Otto Hellwig