Soldiers covered 15 km in gas pipelines. Ukrainian operation on an unprecedented scale

Ukrainian forces executed a significant underground operation to counter Russian advances, utilizing gas pipelines for movement. This operation, coordinated with drone strikes, aimed to disrupt Russian plans to infiltrate Ukrainian rear positions. The commander of the 'Chartia' unit emphasized the strategic advantage gained from observing enemy tactics. The operation is noted as the first large-scale underground counteroffensive globally. On October 21, 2026, Ukrainian forces reported a record daily loss of 2,250 Russian soldiers, marking the highest casualties since the onset of the conflict.