The 157th Separate Mechanized Brigade[a] is a formation of the Ukrainian Ground Forces formed in 2024.

[1] The brigade was formed after a Ukrainian mobilization law came into force, seeing the draft age being lowered from 27 to 25 and placing penalties for those avoiding conscription.

[3][4] This law also saw prisoners being able to join the armed forces.

[3] The brigade was deployed to defend Pokrovsk during the Russian offensive in the area, but suffered from poor training and low morale and was reportedly deteriorating while being transferred to Pokrovsk due to high desertion rates, which had led to the collapse of another 150-series brigade a few weeks prior.

[5] As of July 2024, the brigade's structure is as follows: