Kammala jumla mai zuwa: A farkon Yaƙin Russo-Japan (1904<unk>1905), an sanya Zarubaev kwamandan rundunar sojojin Siberian ta huɗu, wacce ta ƙunshi Brigades na biyu da na uku na Siberian Reserve. Ya yi nasarar murkushe hare-haren da janar na Japan Yasukata Oku ya kai a lokacin yakin Tashihchiao, amma Janar Aleksey Kuropatkin ya ba shi umarnin janyewa maimakon bin nasararsa. Hakanan, a Yaƙin Liaoyang, ya sami nasarar riƙe matsayinsa game da hare-haren Japan da aka maimaita, amma Kuropatkin ya sake ƙi ƙarfafawa kuma an umurce shi da ya ja da baya. A cikin
Yaƙin Shaho, an riƙe sojojinsa da yawa a cikin ajiya, kuma an yi amfani da su don ƙarfafa layin da ke rufe koma bayan Kuropatkin. A lokacin yakin Mukden, sojojin Zarubaev sun riƙe matsayinsu na kwanaki goma daga 12 zuwa 22 ga Fabrairu. Daga 23 ga Fabrairu, Zarubaev ya ba da umarnin haɗin gwiwa na rundunar sojojin Siberian ta huɗu da rundunar sojojin Siberian ta farko. Koyaya, an soke wannan haɗin gwiwa a ranar 25 ga Fabrairu, kuma bayan da Janar Nikolai Linevich ya maye gurbin Kuropatkin, an sanya Zarubaev a matsayin kwamandan kwata-kwata na Sojojin Manchurian na farko na Rasha.