heits dienst ▁( SD )) ▁for ▁the ▁Reich sk omm iss ariat ▁Ost land ▁in ▁ 1 9 4 1 – 4 2 . ▁St ah le cker ▁commanded ▁Einsatz gruppe ▁A , ▁the ▁most ▁murder ous ▁of ▁the ▁four ▁Einsatz gru ppen ▁( de ath ▁squad s ▁during ▁the ▁Hol oca ust ) ▁active ▁in ▁German - occup ied ▁Eastern ▁Europe . ▁ ▁He ▁was ▁killed ▁in ▁action ▁by ▁Soviet ▁part is ans ▁and ▁was ▁replaced ▁by ▁Hein z ▁J ost . ▁ ▁Early ▁life ▁St ah le cker ▁was ▁born ▁into ▁a ▁wealth y ▁family ▁in ▁Stern enf els ▁on ▁ 1 0 ▁October ▁ 1 9 0 0 . ▁From ▁ 1 9 1 9 – 2 0 ▁St ah le cker ▁was ▁a ▁member ▁of ▁the ▁Deutsch v öl k ischer ▁Schutz ▁und ▁Tr utz bund ▁and ▁the ▁Organisation ▁Cons ul . ▁ ▁He ▁studied ▁at ▁the ▁University ▁of ▁T üb ingen , ▁where ▁he ▁obtained ▁a ▁doctor ate ▁of ▁law ▁in ▁ 1 9 2 7 . ▁ ▁On ▁ 1 4 ▁October ▁ 1 9 3 2 , ▁he ▁married ▁Lu ise - G ab rie le ▁Frei in ▁von ▁G ült lingen ; ▁their ▁marriage ▁produced ▁four ▁children . ▁ ▁Early ▁Naz i ▁career ▁On ▁ 1 ▁May ▁ 1 9 3 2 , ▁St ah le cker ▁joined ▁the ▁Naz i ▁Party ▁( no . ▁ 3 , 2 1 9 , 0 1 5 ) ▁as ▁well ▁as ▁the ▁SS ▁( no . ▁