 In Polish-Soviet War, commanded the Cavalry Division at the Battle of Koziatyn (April 25-April 27, 1920), one of the most spectacular raids of the Polish cavalry, during the Polish advance towards Kiev.His troops fought against the Soviet cavalry elite "Konarmia" of Semyon Budyonny.He commanded the Polish 13th Infantry Division during the Battle of Komarów (August 31, 1920).