The book is the result of research and interviews of participants and witnesses who participated in events in the Koh Kong area from the 1940s to the 1970s. The process of organizing many of our historical works not directly involved requires much time and energy. In addition, the Author must ensure that the described events are placed in the correct time zone. The book is a history of revolutionary movement; it is not a political, economic, or social analysis, or novel. However, it is impossible to add some analysis because the subject matter of the book is indistinguishable from local historical events.