In 1957, while working on his thesis, Yap Hong Kuan was given unprecedented access to Special Branch files that provided him with detailed information on the underground resistance forces that fought the Japanese and went on to form the nucleus of the field regiments of the Malayan Communist Party. This book provides a comprehensive and insightful account of the motivations, leaders, doctrines, and organizational structure of the underground resistance forces that fought the Japanese Occupation Army from 1942 to 1945. The narrative ends with a verse entitled Singapore 1941//2 by Edwin Thumboo followed by some photos.