The brigade was formed on 27 June 2018 in Ternopil Oblast.[2] On 2 August in Borshchiv, over 200 reservists were gathered for training.[3][4] In November a recruitment drive was organized to fill the brigade's ranks.[1] In February[5] and March[6] 2019 the brigade held readiness exercises.
Russo-Ukrainian War
Russian invasion of Ukraine
On 4 March, Ternopil Oblast governor Volodymyr Trush announced that the brigade was at its full strength. Its soldiers were tasked with defense of critical infrastructure, manning roadblocks and helping postal workers deliver pensions.[7] In August, units of the 105th Brigade were deployed and fought in the East.[8]