<prompt> Bhala ukuqhubeka kwalesi sigaba - Yakhiwa ngasekupheleni kuka-1918 phakathi neMpi Yombango YaseRussia njenge-5th Ural Infantry Division, le ngxenye yalwa eMpumalanga. NgoSepthemba 1919 yahlukaniswa futhi amabutho ayo amabili kanye nendlunkulu yayo yathuthelwa entshonalanga. Ibutho laphinde lahlangana eSouthern Front ngoJanuwari, balwa ngezigaba zokugcina zomkhankaso lapho. NgoMeyi yadluliselwa ukulwa eMpini yasePoland naseSoviet, futhi yayingenye yezingxenye ezalwa eMpini yaseRadzymin ngesikhathi seMpi enkulu yaseWarsaw. Ngemva kokuthi iButho EliBomvu linqotshwe yiPoland, leli qembu lahlehlela eBelarus. Yadluliselwa empumalanga futhi ukuze icindezele ukuvukela kwabalimi eNtshonalanga Siberia, futhi yahlala lapho kwaze kwaba ngo-1929, lapho yadluliselwa eSoviet Far East ukuze ilwe empini yaseSino-Soviet  <response>: yalonyaka. Ngemuva kokuqala kwe-Operation Barbarossa ngoJuni 22, 1941, lo mkhakha wathunyelwa entshonalanga ngoSepthemba futhi walwa eMpini Yokuqhubeka neFinland eKarelia. Kusukela entwasahlobo ka-1944 yalwa emkhakheni wase-Arctic, ekuqaleni endaweni yase-Alakurtti. Ngemva kokuhoxa kweFinland empini, lo mkhakha wadluliselwa eHungary ngoJanuwari 1945. Yalwa ekupheleni kokuhlaselwa kweBudapest, i-Operation Spring Awakening, kanye nokuhlaselwa kweVienna ekupheleni kwempi. Ngemuva kwempi, i-21st yasuswa eRomania futhi yaguqulwa yaba yi-20th Mechanized Division, eyahlakazeka ngo-1947. 