Born on Biala Podlaska, December 24, 1912. He trained as a civilian pilot 1932 before joining the Polish Air Force, in 1933. Esceping Poland on September 17, 1939 he arrived in England via Latvia and Sweden on November 1, 1939. He joined the RAF and was assigned to 301 Polish Bomber Squadron on Wellingtons. His aircraft was damaged during raid on Bremen and crasched-landed in England, June 15, 1941. Hospitalized for one year as a result of injuries, he was awarded the Polish medals Virtuti Military and the Krzyz Walecznych (Cross of Valour) with three bars. He resumed operations and was sent on a conversion course for B-25 Mitchells at Biscester and transfered to the 305 Squadron, 2nd Tactical Air Command. After one operation the squadron converted to Mosquitoes and Zygmunt carried out low-level daylight bombing raids againts V-1 and V-2 sites, for which he was awarded the Distinguished Flying Cross. He was stationed in France until the end of war. on his return to England, he was posted back to 301 Squadron, Transport Command. He was demobilized in Canada, May 1948.