The foundation of Japanese military brutality lay in the kokutai ideology, which positioned the emperor as a divine figure and Japan as a nation chosen by the gods to rule over Asia. This belief system created a racial hierarchy that placed Japanese people at the apex of human civilization while relegating other Asian peoples, and particularly Western populations, to inferior status deserving of contempt and harsh treatment. The concept of yamato-damashii, or Japanese spirit, reinforced the notion that Japanese people possessed unique spiritual qualities that made them inherently superior to other races and cultures.
Military training in the Imperial Japanese Army systematically dehumanized both the soldiers themselves and their potential enemies through practices that would be considered torture in civilian contexts. New recruits underwent brutal initiation ceremonies that included severe beatings, public humiliation, and psychological abuse designed to break down individual identity and replace it with absolute obedience to military authority. Veterans who had endured such treatment often inflicted similar or worse abuse on newer recruits, creating cycles of violence that normalized brutality as a fundamental aspect of military culture.