1 5 ▁during ▁the ▁wars ▁against ▁Napoleon . ▁Au ers wald ▁remained ▁in ▁the ▁military ▁until ▁ 1 8 2 1 , ▁when ▁he ▁was ▁dis charg ed ▁as ▁a ▁caval ry ▁captain . ▁ ▁Au ers wald ▁married ▁his ▁cousin ▁Count ess ▁Ad ela ▁D oh na - L au ck ▁in ▁ 1 8 1 7 . ▁After ▁his ▁dis charge ▁from ▁the ▁military ▁he ▁acquired ▁an ▁estate ▁in ▁the ▁Heil igen be il ▁District ▁of ▁East ▁Pr uss ia , ▁where ▁he ▁became ▁Land rat ▁( d istrict ▁administrator ) ▁in ▁ 1 8 2 4 . ▁Au ers wald ▁became ▁General - Land schaft sr ath ▁of ▁the ▁Province ▁of ▁Pr uss ia ▁in ▁ 1 8 3 5 ▁and ▁Ober b ür germeister ▁( rough ly ▁Lord ▁Mayor ) ▁of ▁König s berg ▁in ▁ 1 8 3 5 . ▁ ▁Au ers wald ▁was ▁a ▁member ▁of ▁the ▁kn ighth ood ▁of ▁the ▁East ▁Pr uss ian ▁provincial ▁di et , ▁sometimes ▁with ▁the ▁role ▁of ▁parliament ary ▁mar shal ▁( Land tags mar sch all ). ▁During ▁a ▁di et ▁pay ing ▁hom age ▁to ▁King ▁Frederick ▁William ▁IV ▁of ▁Pr uss ia , ▁Au ers wald ▁was ▁one ▁of ▁the ▁polit icians ▁who ▁rem ind ed ▁the ▁new ▁king ▁of ▁the ▁ 1 8 1 5 ▁promise ▁of ▁his ▁prede cess or , ▁Frederick ▁William ▁III , ▁to ▁grant ▁a ▁constitution . ▁Au ers wald ▁became ▁Reg ierungs präsident ▁of ▁Reg ierungs bez irk ▁T