Kammala jumla mai zuwa: Zubanych ya zama kwamandan kamfani a cikin 15th Separate Mountain Battalion na 128th Mechanized Brigade. A ranar 6 ga Disamba, 2012, an ba Zubanych lambar yabo don aikin soja ga Ukraine. Daga baya ya zama shugaban ma'aikatan bataliya. Ya zama kwamandan bataliya a ranar 31 ga Disamba 2013. Daga Mayu 2014, ya yi yaƙi a Yaƙin a Donbass. Zubanych ya yi yaƙi a yaƙe-yaƙe a Novoannovku, Nyzhne Teple, ƙauyen Lugansk, Makarove, da Shchastia. Ya yi aiki a wuraren bincike masu motsi, yana rakiyar kayayyaki da jirage. Matsayin Zubanych ya ci gaba da harbe-harbe da kuma kai hare-haren 'yan tawaye. Yayin da yake jagorantar rukunin kai hari a Filin jirgin saman Lugansk don rufe janyewar sojojin Ukraine daga kewaye, Zubanych ya ji rauni ta hanyar shrapnel kuma an harbe shi amma ya ci gaba da jagorantar rukunin kuma ya ƙi shiga asibiti. A watan Nuwambar 2014, ya yi yaƙi a
Yaƙin Debaltseve. Batalayinsa ya riƙe Chornukhyne, Nikishynomu, Ridkodubi, Kamyantsi, da sauran maki a cikin Debaltseve salient duk da asarar da suka yi. Rundunar ta kasance a karkashin wuta daga BM-27 Uragans, BM-21 Grads, bindigogi, da kuma bindigogi. A ranar 23 ga Maris, 2015, an ba Zubanych lambar yabo ta Hero of Ukraine saboda jagorancinsa.