Alexander 'Sasha' Pechersky (; 22 February 1909 – 19 January 1990) was one of the organizers, and the leader, of the most successful uprising and mass-escape of Jews from a Nazi extermination camp during World War II, which occurred at the Sobibor extermination camp on 14 October 1943. In 1948, Pechersky was arrested by the Soviet authorities along with his brother during the countrywide Rootless cosmopolitan campaign against Jews suspected of pro-Western leanings but released later due in part to mounting international pressure. Pechersky was prevented by the Soviet government from leaving the country to testify in international trials related to Sobibor, including the Eichmann Trial in Israel; foreign investigators were only allowed to collect his testimony under KGB supervision. The last time he was refused permission to exit the country and testify was in 1987, for a trial in Poland. Pre-war life and career Pechersky, a son of a Jewish lawyer, was born on 22 February 1909 in Kremenchuk, Poltava Governorate, Russian Empire (now Ukraine). In 1915, his family moved to Rostov-on-Don where he eventually worked as an electrician at a locomotive repair factory. After graduating from university with a diploma in music and literature, he became an accountant and manager of a small school for amateur musicians. World War II On 22 June 1941, the day when Germany invaded the Soviet Union, Pechersky was conscripted into the Soviet Red Army with a rank of junior lieutenant. By September 1941, he was promoted to the rank of lieutenant quartermaster (class II). In the early autumn of 1941, he rescued his wounded commander from being captured by the Germans. He did not receive any medals for this deed. One of his fellow soldiers reportedly said: "Sasha, if what you've done doesn't make you a hero, I don't know who is!" In October 1941, during the Battle of Moscow, their unit was surrounded and captured by the Germans in the city of Vyazma, Smolensk Oblast. Captured, Pechersky soon contracted typhus, but survived the seven-month-long illness. In May 1942, he escaped along with four other prisoners of war, but they were all recaptured the same day. He was then sent to a penal camp at Borisov, Belarus, and from there to a prisoner of war (POW) camp located in the forest next to the city of Minsk. During a mandatory medical examination it was discovered that he was circumcised. Pechersky recalled a