About the book: 2005 / Dissertation for the degree of candidate of historical sciences. Scientific supervisor: Doctor of Historical Sciences, Professor S.N. Poltorak. Northwestern Academy of Public Administration, St. Petersburg, 2005. The dissertation, based on archival documents, interviews with participants in events and memoirs, tells about little-known pages of the history of the Soviet Union and the Second World War: the activities of the Organization of Ukrainian Nationalists (OUN), the Ukrainian Revolution in Transcarpathia in 1939, the creation and struggle of the Ukrainian Insurgent Army (UPA). The myths about the creation of the UPA by the Nazis are refuted, the anti-Nazi struggle of Ukrainian rebels is covered, the Ukrainian-Polish interethnic conflict of 1942-1944 is examined on the basis of documents and evidence..