Operation Vivaldi: Ukraine’s Claims of Robot Strikes and Gains Near Lyman

Ukraine’s Third Army Corps describes Operation Vivaldi as a counteroffensive against Russian positions north and northwest of Lyman in northern Donetsk. Its account combines a flanking advance with strikes on logistics, defenses against Russian drones and several uses of unmanned ground vehicles. Independent analysts have documented the counteroffensive, but many of the operation’s headline numbers come from the corps itself.3236

When and where did Operation Vivaldi take place?

Commander Andrii Biletskyi publicly confirmed the operation on September 15, 2026. Reporting on its first phase places the start in May, but does not establish an exact launch date. The corps reported results from a second phase on September 20.32372

The fighting centered on the Lyman sector of Donetsk. The corps says its forces and attached units used a flanking maneuver rather than direct assaults to regain settlements in the area.13

How were robots and drone defenses used?

The corps says heavy bomber drones flown by the Third Assault Brigade carried explosive, or “kamikaze,” ground vehicles more than 10 kilometers behind Russian lines before releasing them to operate on the ground. A corps intelligence officer said the robots struck Russian command nodes identified through reconnaissance. Biletskyi called the air deployment a world first; that distinction has not been independently established.38156

For the advance, the corps says electronic-warfare units disrupted more than 20,000 Russian drone missions. It also describes air defenses working alongside electronic warfare to limit Russian aerial reconnaissance. The available accounts do not provide a separate, verified tally of air-defense interceptions.31410

Ground robots had a different task near Shandryholove: the corps says they cleared 30 kilometers of mine-affected routes in two nights, with no sapper losses during that work. This is a reported length of routes cleared, not an area of territory recaptured.1

What missions, targets and gains did the corps report?

The corps reported 36,000 strike missions in Vivaldi’s first phase, including attacks on field fuel depots in occupied Luhansk intended to disrupt Russian supplies. Other reported targets included command posts, communications nodes, ammunition depots and vehicles. A strike-mission count is not a count of confirmed hits or destroyed targets.342448

For the second phase, Biletskyi said Ukrainian forces regained another 40 sq km, liberated Shandryholove and Derylove, and established full control over Drobysheve. He put the two-phase total at 125 sq km returned to Ukrainian control, of which 50 sq km had been under Russian occupation. The distinction matters: the larger figure also includes territory where Ukrainian forces say they cleared Russian infiltration. The corps reported about 800 Russian troops killed in the second phase and more than 3,000 Russian personnel losses across both phases; those are different measures and should not be treated as interchangeable.2312447

What has been independently verified?

The Institute for the Study of War identified an ongoing Ukrainian counteroffensive near Lyman and assessed that strikes against Russian logistics and electronic-warfare capabilities helped enable maneuver. That assessment does not independently confirm the corps’ robot-deployment details, drone-disruption count, casualty figures or full territorial tally. Much of the reporting on those specifics repeats Ukrainian military statements.323662

How does Vivaldi relate to the “Army of Robots”?

On September 26, Mykhailo Fedorov announced an “Army of Robots” initiative aimed at developing and scaling military robotics for dangerous frontline work. Vivaldi offers examples of the kinds of tasks he wants machines to take on, but the initiative was announced after the corps reported its September results; it should not be credited with directing the operation.22171

The initiative also follows a broader expansion of Ukraine’s ground-robot sector. Fedorov has said more than 200 companies work on ground robotic systems and described a plan to procure 25,000 unmanned ground vehicles in the first half of 2026, twice the quantity reported for all of 2025. Those figures describe the sector and a procurement plan, not a verified count of robots used in Vivaldi.1918