you mean the Japan:
“From the invasion of China in 1937 to the end of World War II, the Japanese military regime murdered near 3,000,000 to over 10,000,000 people, most probably almost 6,000,000 Chinese, Indonesians, Koreans, Filipinos, and Indochinese, among others, including Western prisoners of war. This democide was due to a morally bankrupt political and military strategy, military expediency and custom, and national culture (such as the view that those enemy soldiers who surrender while still able to resist were criminals)”
https://www.hawaii.edu/powerkills/SOD.CHAP3.HTM
Are you trying to pigeon hole me into an argument about citizens and government fighting a war or something? I just do not see how your last comment is relevant.