In this paper, I analyzed the five volumes of “Sengoku Gunki”, which share the same size and mounting style and were completed during the era of Hidenari Mori, the first lord of the Hagi han, which remains in the MoriKe Bunko (Yamaguchi Prefectural Archives). Considering the time of production, the reason for production, the characteristics of the content, etc., the common points and differences were clarified. Each book has the character of a memoir of an old retainer, a book discussing past wars, and a lesson book. In the Hagi domain, many Sengoku Gunki were created from the Genna era to the early Kanei era, and it is speculated that behind this was the intention of his father, Terumoto, to cultivate the historical awareness necessary for Hidenari. I also paid attention to the differences in how each Sengoku Gunki describes the history.