It is a kind of monograph covering the life and the cause of Tran Hung Dao (1228 - 1300) - one of the greast people of Vietnam history. It was written by Hoang Thuc Tram (1902 - 1977) - one of the profound & prestigious scholars and firstly published in the year of 1944. It is useful reference for historians. Contents: Chapters: 1 - The family & trait of Tran Hung Dao. 2 - The military forces & their spirit under the commandership of Tran Hung Dao. 3 - Vietnam population & society in the 13th century. 4 - The Mongols. 5 - Defeating the Mongols in the year of 1257; 1285 and 1888. 6 - Military thoughts of Tran Hung Dao. 7 - Historic lessons.