Kammala jumla mai zuwa: A watan Agusta na shekarar 2014 raka'o'in brigade sun yi yaƙi a
Yaƙin Ilovaisk. A ranar 29 ga Agusta, yayin yunƙurin ɓarkewar Ukrainian daga Ilovaisk, wani rukunin " arewacin " na sojojin Ukraine sun yi yaƙi da sojojin brigade na 21 a kan hanyar da ke tsakanin ƙauyukan Voznesenka da Horbatenko. Tankin T-64 na Ukrainian da BMP-2 da yawa na Brigade na 51 na Mechanized sun sami damar lalata tankunan T-72BA guda biyu da BMP-2 na Brigade Rifle Brigade na 21. Wani tankin T-72BA na brigade na 21 ya lalace a kusa da kauyen Kumachove, mai yiwuwa ta hanyar harin makami mai linzami na Tochka-U na Brigade na 19.