This is the definitive English-language work on the 105-day war between Finland and Stalin's Soviet Union during the winter of 1939-1940. While largely overshadowed by the following conflicts of World War II, the successful resistance of the Finnish forces against the massive Red Army allowed Finland to survive as an independent nation. This study of the war's dramatic deep-winter military encounters is courseware for both the USMC and US Army. Research author, Dr. Allen F. Chew, granted permission to the USMC to reprint this work for its exclusive and official use.