He took part in the Invasion of Poland in 1939, fighting against Nazi Germany. He was captured and sent to a POW camp from which he escaped, most likely in November 1940. After coming back to his home region he joined a small resistance group Polska Organizacja Zbrojna (Armed Polish Organization) which later became part of the Polish Home Army (AK). He was made the commander of a 35 men platoon in the sub-region of Stary Radzic, AK Region "Lubartów", in the Inspectorate of Lublin.
