125th Heavy Mechanized Brigade
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Ukraine's Third Army Corps confirms "Vivaldi" offensive near Lyman
Ukraine's Third Army Corps publicly confirmed on September 15 that it has been running an offensive operation codenamed "Vivaldi" in the northern part of Donetsk Oblast, east and northeast of Lyman. The corps revealed details of the first phase, which targeted Russian troop infiltration and logistics, and reported Russian losses in personnel, drones and equipment. The announcement broke months of operational secrecy around the fighting.