. ▁During ▁the ▁German ▁advance ▁he ▁moved ▁to ▁Val m iera ▁where ▁he ▁was ▁an ▁editor ▁of ▁the ▁party ▁newspaper ▁C ī ņ a . ▁Peters s ▁was ▁a ▁pe asant ▁representative ▁of ▁the ▁Governor ate ▁of ▁Liv onia ▁to ▁the ▁Democratic ▁discussion ▁initi ated ▁by ▁Ker ens ky . ▁ ▁Mov ing ▁to ▁Pet ro grad , ▁he ▁act ively ▁participated ▁in ▁the ▁B ols he vik ▁revolution ▁of ▁October ▁ 1 9 1 7 ▁being ▁a ▁member ▁of ▁the ▁Military - Re volution ary ▁Committee ▁in ▁Pet ro grad . ▁At ▁that ▁time ▁he ▁was ▁prepar ing ▁military ▁units ▁for ▁the ▁October ▁Revolution . ▁After ward , ▁he ▁was ▁a ▁member ▁of ▁Che ka ▁Colleg iate , ▁the ▁Deput y ▁Chair man ▁of ▁the ▁Commission , ▁and ▁the ▁chairman ▁of ▁the ▁Revolution ary ▁Trib unal . ▁He ▁participated ▁in ▁the ▁dis closure ▁of ▁the ▁alleg ed ▁Lock hart ▁plot ▁as ▁well ▁as ▁leading ▁the ▁liquid ation ▁of ▁the ▁Left ▁SR ▁mut iny ▁of ▁ 1 9 1 8 . ▁Following ▁D zer z hin sky ' s ▁res ignation ▁in ▁the ▁after math ▁of ▁the ▁Left ▁SR ▁U pr ising , ▁assass ination ▁of ▁Mir bach , ▁and ▁the ▁Tre aty ▁of ▁Br est - L it ov sk , ▁Peters s ▁briefly ▁served ▁as ▁the ▁chief ▁of ▁the ▁Che ka ▁until ▁D zer z hin sky ▁res umed ▁his ▁duties . ▁As ▁one ▁of ▁the ▁Che ka ' s ▁leaders , ▁Peters s ▁was ▁responsible ▁for ▁the ▁first ▁major ▁Che