books.google.com - Poland was the first country to stand up to Germany in 1939, and maintained an underground army during the years of World War II. The underground army was organized in occupied Poland in October 1939 and worked until April 1945, hoping to establish a legitimate authority in post-war Poland while liberating...http://books.google.com/books/about/The_Polish_Underground_Army_The_Western.html?id=zhb2doihL1wC&utm_source=gb-gplus-shareThe Polish Underground Army, The Western Allies, And The Failure Of Strategic Unity in World War II