Kammala jumla mai zuwa: Da yake ba da kai ga Red Army a farkon yakin basasa na Rasha, an fara nada Trubnikov a matsayin jami'in soja na garinsu. A watan Mayu 1919 an tura shi zuwa gaba, yana jagorantar rukunin, kamfani, sannan kuma bataliya a cikin 28th Rifle Regiment na 7th Rifle Division. Ya yi yaƙi a Gabas ta Gabas da sojojin White Army na Alexander Kolchak a cikin yankunan Votkinsk da Izhevsk, amma a lokacin rani an tura rundunar gaggawa zuwa Kudancin Gabas, inda Anton Denikin ke ci gaba zuwa Moscow. A watan Agusta ya zama mataimakin kwamandan sannan kuma kwamandan Rundunar 'Yan bindiga ta 55, kuma ta 7th Division, kuma ya yi yaƙi a yaƙe-yaƙe a kusa da Oboyan da Sudzha. Daga Oktoba zuwa Nuwamba ya shiga cikin
Orel<unk>Kursk aiki, nasara mai nasara ta Soviet wanda Red Army ya sake samun damar. A lokacin Yakin Poland-Soviet ya umurci rundunar soja sannan kuma brigades na 20 da na 19 na 7th Division. A cikin kaka na 1920 ya yi yaƙi da Stanisław Bułak-Bałachowicz kusa da Ovruch sannan kuma ya yi yaƙi da sojojin anarchist na Nestor Makhno kusa da Zolotonosha.