Hideki Tojo was a Japanese politician, military leader and convicted war criminal who served as prime minister of Japan and president of the Imperial Rule Assistance Association from 1941 to 1944 during World War II. He assumed several more positions including chief of staff of the Imperial Army before ultimately being removed from power in July 1944. During his years in power, his leadership was marked by extreme state-perpetrated violence in the name of Japanese ultranationalism, much of which he was personally involved in.

A war crime is a violation of the laws of war that gives rise to individual criminal responsibility for actions by combatants in action, such as intentionally killing civilians or intentionally killing prisoners of war, torture, taking hostages, unnecessarily destroying civilian property, deception by perfidy, wartime sexual violence, pillaging, and for any individual that is part of the command structure who orders any attempt to committing mass killings including genocide or ethnic cleansing, the granting of no quarter despite surrender, the conscription of children in the military and flouting the legal distinctions of proportionality and military necessity.