The 143rd Mechanized Brigade was formed on 15 February 2023, as part of an expansion of the Ukrainian Army reserve, bringing together rifle battalions recruited from various Ukrainian regions subordinate to
Operational Command North. The brigade first saw combat in March 2024, when it was deployed to the village of Terny in the
Lyman sector in front of the
Svatove-Kreminna line. In August 2024, it was transferred to
Kharkiv Oblast to defend the town of
Vovchansk. In March 2024, the brigade's 468th battalion was active in the
Chasiv Yar sector. In April 2024, the battalion fought in outskirts of the village of
Kalynivka, Bakhmut Raion, Donetsk Oblast. ==Structure==