Armed Conflict — 2026-09-21

Ukraine Third Army Corps Reports 125 Square Kilometers Liberated in Vivaldi Phase Two With First-Ever Air-Dropped Kamikaze UGVs

BLUFVivaldi's Phase Two gains narrow Russian options north of Lyman on paper, but consolidation under counterattack will determine whether the operation reshapes the Donbas line or merely dents it.

Ukraine's 3rd Army Corps said on September 20 that its forces liberated Shandryholove and Derylove and secured full control of Drobysheve in Donetsk Oblast during Operation Vivaldi's second phase, corps commander Brig. Gen. Andrii Biletskyi reported 12345. The corps said it has restored control over 125 square kilometers across the operation's first two phases, including 50 square kilometers de-occupied, with 40 square kilometers retaken in the second phase alone 1235. Biletskyi said the corps became the first in the world to air-drop kamikaze unmanned ground vehicles from heavy bomber drones, striking more than 10 kilometers behind Russian lines 1235. The corps also reported roughly 800 additional Russian personnel losses in the second phase, bringing claimed losses across both phases to more than 3,000 235.

Analysis
The air-dropped kamikaze UGV strikes over 10 kilometers behind Russian lines mark a tactical innovation extending Ukrainian reach into rear areas without added infantry exposure, and the claimed salient severance north of Lyman would, if sustained, narrow Moscow's options for a broader Donbas push this fall. All reporting traces to the 3rd Army Corps' own Telegram statement, amplified but not independently corroborated by Kyiv Independent, Euromaidan Press, Ukrainska Pravda, United24 Media, and Militarnyi, leaving the claimed 3,000-plus Russian losses and territorial scale unverified by outside observers. The corps now itemizes 40 of 125 square kilometers as phase-two gains, refining its earlier 200-square-kilometer claim. Battlefield effect hinges on whether Ukrainian units can hold contested Shandryholove against counterattack, and the disclosure may equally function as morale and messaging timed to Vivaldi's public unveiling rather than a decisive shift in the sector's balance.

7 sources

Ukraine's 3rd Army Corps deploys air-dropped kamikaze UGV for the first time during offensive in Donetsk Oblast - Ukrainska Pravda
Ukraine's 3rd Army Corps Recaptures 125 Sq Km in "Operation Vivaldi" in Donetsk Region - United24 Media
Operation Vivaldi: Ukrainian Forces Liberate 2 More Settlements in Lyman Sector - Militarnyi
Ukraine reveals new Operation Vivaldi gains in Donetsk Oblast - Kyiv Independent
Ukraine retakes ground in Vivaldi counteroffensive described as one of most important victories of 2026 - Euromaidan Press
3rd Army Corps statement on Operation Vivaldi phases 1–2: 125 km² returned to Ukrainian control, first-ever air-dropped kamikaze ground robots - 3rd Army Corps (official Telegram channel)
Vivaldi continues and gains momentum: Third Corps liberates Shandryholove, Derylove, takes control of Drobysheve - 3rd Army Corps (official Telegram channel, @ab3army)