He particularly distinguished himself during the Vistula–Oder offensive. On 14 January, 1945, the brigade crossed the Nida near the village of Motkowice and captured the town of Jędrzejów. Moving further, tankmen from the battalion of Hero of the Soviet Union Khokhryakov, which included Motsny's platoon, defeated an oncoming German convoy of equipment, a military airfield, и освободил город Nagłowice. On 16 January, tankers, crossing the Pilica, liberated the city of Koniecpol. On the way to the city of Częstochowa, the village of Mstów was well fortified by the enemy. Motsny's platoon was among the first to break into the city's streets; in the battle for the city, they inflicted heavy losses on the enemy. In the street battle for Czestochowa, Motsny's tank was hit, but the crew continued to fight. Motsny, firing from a machine gun, was shell-shocked and seriously wounded in the shoulder, a fragment of armor knocked his eye out, but he did not leave the battlefield until the city was completely cleared. In an unconscious state, he was taken to a first-aid post. All three tanks of Motsny's platoon were lost, their commanders, Zolotov and Zaitsev, were killed.