He also fought in the Polish-Soviet War after WW1. Was a Calvary Officer that fought the German Invasion. First fought as a private soldier during the Warsaw Uprising, but after the Officers in his company got killed he revealed his true rank of Captain and took Command. Got captured after the Home Army capitulated in Warsaw in October 1944. Spent the rest of the war in a POW camp until Liberated by American soldiers. Served under General Wladyslaw Anders in intelligence in Italy keeping contacts with the Home Army in Poland now fighting the Soviets and their traitorous Polish Communist collaborators. Wrote the comprehensive Allied report on the Holocaust. Later went back to Poland, giving reports about Communist repression of Home Army veterans and Anti-Communist Poles. Got warned his cover was blown, but refused to leave and sought to help all those he could avoid Soviet persecution and murder. Got betrayed and captured in 1947. After a Soviet show trial, he was found guilty of treason, espionage and other BS charges like he collaborated with the Nazis. He was Executed in 1948 in Mokotow Prison.