The 3rd Army Corps utilized heavy bomber drones to insert kamikaze unmanned ground vehicles deep into the Russian rear. These robot raids occurred during a counterattack in the Lyman direction codenamed Operation Vivaldi, an offensive that delivered payloads 10 km behind enemy lines and coincided with the withdrawal of a Russian elite drone unit from northern Donetsk Oblast.

The Russian Ministry of Defense denied Ukrainian gains and claimed its forces are clearing Svyatohirsk, though geolocated evidence puts the town 25 km from the Russian forward line. Ukrainian officials report the operation regained 125 square km of territory and caused 3,000 Russian casualties, including 800 killed during the second stage of the assault.