Formation The brigade was officially created as the
141st Reserve Rifle Brigade () alongside two other reserve rifle brigades. The creation of these three brigades, including the brigade itself, gave Ukraine access to an additional 15,000 troops, meaning the brigade was expected to fill its ranks with 5,000 troops. It was reported by
Forbes that the brigade was reportedly created by combining six rifle battalions, each being filled with a few hundred troops. These individual battalions—the
451st,
452nd,
453rd,
454th,
455th, and
456th Infantry Battalions—make up the bulk of the brigade's structure.
Reforms On 31 August 2023, the brigade made publications indicating that the brigade had in fact been redesignated as the 141st Infantry Brigade (), changing from its previous title as a reserve rifle brigade. On 1 March 2024, the insignia was first revealed to have changed in appearance, indicated by a flag in use by the brigade, with the right side of the shield's background changing from a dark green to a black colour.
Visual insignia File:Logo of the 141st Mechanized Brigade (2023).png|Former Insignia (2023) File:141st Infantry Brigade Insignia - Old Variant.png|Former shoulder sleeve insignia of the 141st Infantry Brigade. File:141st Infantry Brigade Insignia - First Variant.png|Former shoulder sleeve insignia of the 141st Infantry Brigade (2023–2025). File:141st Infantry Brigade Insignia - Subdued Variant.png|Former shoulder sleeve insignia, subdued variant, of the 141st Infantry Brigade (2023–2025). File:Logo of the 141st Mechanized Brigade (2025).png|Current Insignia (2025). ==Russo-Ukrainian war==