초록
We compared the texts of the two types of military books, 『Mubiji』 and 『Yungsalyujeom (戎事類占)』. In this research, it is proved that Lee-Jema transcribed a segment on martial mantic in 『Mubiji (武備志)』 which is a book on military studies and named it 「Jipungjo (知風兆)」 since he had practical interest in military affairs. Lee-Jema had been serving as a military officer when his peculiar thought was beginning to unfold and maintained his interest in military affairs until his latter years. It is necessary to take a military studies based approach to comprehend Lee-Jema's thought since military affairs had great influence on his life.