▁regional ▁committee ▁of ▁the ▁Ukrain ian ▁Commun ist ▁Party ▁of ▁the ▁Don bas ; ▁a ▁member ▁of ▁the ▁military ▁command ment ▁in ▁Don et sk ; ▁a ▁member ▁of ▁the ▁Revolution ary ▁Military ▁Council ▁( Re v vo ens ov et ) ▁of ▁the ▁ 5 th , ▁ 1 0 th , ▁ 1 4 th , ▁and ▁ 2 nd ▁Arm ies ▁of ▁the ▁Red ▁Army ; ▁a ▁member ▁of ▁the ▁Rev vo ens ov et ▁of ▁the ▁Southern ▁Front ; ▁people ’ s ▁military ▁comm iss ar ▁of ▁the ▁Ukraine ; ▁and ▁a ▁member ▁of ▁the ▁Rev vo ens ov et ▁of ▁the ▁T ula ▁region . ▁In ▁ 1 9 2 0 – 2 4 , ▁Me zh la uk ▁was ▁comm iss ar ▁of ▁the ▁Moscow - B alt ic , ▁Moscow - K ur sk , ▁and ▁Northern ▁rail ro ads , ▁including , ▁in ▁ 1 9 2 1 – 1 9 2 2 , ▁as ▁a ▁deput y ▁to ▁the ▁Chief ▁People ’ s ▁Comm iss ar ▁for ▁Transport , ▁Felix ▁D zer z hin sky . ▁In ▁August ▁ 1 9 2 3 ▁he ▁was ▁made ▁a ▁member ▁of ▁the ▁gover ning ▁colleg ium ▁of ▁the ▁People ' s ▁Comm iss ariat ▁of ▁Transport . ▁He ▁would ▁remain ▁at ▁that ▁post ▁until ▁November ▁ 1 9 2 4 ▁when ▁he ▁was ▁moved ▁to ▁the ▁Pres id ium ▁of ▁the ▁Supreme ▁Council ▁of ▁National ▁Econom y ▁( V SN K h ), ▁the ▁Soviet ▁chief