The Nanking Massacre or Nanjing Massacre, also known as the Rape of Nanking, was a mass murder and war rape that occurred during the six-week period following the Japanese capture of the city of Nanjing (Nanking), the former capital of the Republic of China, on December 13, 1937 during the Second Sino-Japanese War. During this period, up to hundreds of thousands of Chinese civilians and disarmed soldiers were murdered and 20,000–80,000 women were raped by soldiers of the Imperial Japanese Army. Although the Japanese government has admitted the acts of the killing of a large number of noncombatants, looting and other violence committed by the Imperial Japanese Army after the fall of Nanking, some Japanese officials have argued that the death toll was military in nature and that no such crimes ever occurred. Denial of the massacre has become a staple of Japanese nationalism.