Nanjing Massacre
During the six weeks of the Nanjing massacre, the Imperial Japanese Army (IJA) massacred between 40,000 and 300,000 people.  It is difficult to know exactly how many people were killed in this mass murder, because the IJA burnt many bodies, buried others in mass graves, and dumped others in the Yangtze River.  Because of this, scholars and historians do not agree on exactly how many civilians were killed.p. 1015