Kammala jumla mai zuwa: A matsayin daya daga cikin rukunin da suka fi kwarewa da kuma kayan aiki mafi kyau na Poland, ya yi yaƙi a yawancin manyan batutuwa na Yakin Poland-Bolshevik na 1919 da 1920. Daga cikin su akwai aikin 'yantar da Wilno da Yaƙin Dyneburg a Daugavpils, Latvia (a matsayin wani ɓangare na Rundunar Soja ta Uku ta Rydz-Śmigły kuma a ƙarƙashin ikonsa na sirri, kodayake ainihin kwamandan kwamandan Michał Karaszewicz-Tokarzewski ne). A lokacin Kiev Offensive na bazara na 1920, sashin ya zama ainihin "Rukunin Aiki" kuma ya shiga cikin yakin Zhytomyr (Afrilu 25), ya kama birnin Kiev kanta (Mayu 7). Bayan janyewar Poland, rukunin ya shiga cikin yaƙe-yaƙe masu ƙarfi kuma ya kare koma bayan sauran sojojin Poland. Bayan rikice-rikice da yawa tare da Sojojin Sojojin Sojoji na 1, sashin ya rabu kuma ya isa yankin Kogin Wieprz, daga inda ya fara kai hare-hare a lokacin yakin Warsaw (duba Yaƙin Dęblin da Mińsk Mazowiecki). A rana ta biyu na hare-haren Poland, 16 ga watan Agusta, sashin ya sami damar fitar da rukunin Bolshevik Mozyr ta hanyar tilasta tafiya sama da kilomita 56. Bayan wannan rukunin, wanda Stefan Dąb-Biernacki ya umurce shi, an haɗa shi da Sojoji na Biyu kuma ya shiga cikin babban yaƙi na biyu na yaƙin,
Yaƙin Kogin Niemen. A lokacin yaƙin, rukunin ya zama ainihin "Rukunin Wilno" kuma ya shiga cikin nasarar fitar da sojojin Bolshevik da ke tsakiyar garin Grodno.