A Telegram channel reported that the "Khartia" unit conducted the world's first underground counteroffensive in the Kupyansk direction, advancing 15 km. Commander of the "Khartia" corps, Brigadier General Ihor Obolenskyi, stated that Ukrainian forces anticipated enemy tactics involving gas pipelines and mastered underground combat.

Brigadier General Ihor Obolenskyi, commander of the "Khartia" corps, explained that Ukrainian troops had studied the enemy's tactics in advance, who planned to use gas pipelines to penetrate the rear of the Defense Forces. "We anticipated the enemy's actions and mastered the tactics of conducting combat operations underground," Obolenskyi emphasized.