^This number does not include Japanese killed by Chinese forces in the Burma campaign and does not include Japanese killed in Manchuria.
^Excluding more than 1 million who were disarmed following the surrender of Japan
^Including casualties of Japanese puppet forces. The combined toll is most likely around 3,500,000: 2.5 million Japanese, per their own records, and 1,000,000 collaborators.
The Second Sino-Japanese War was fought between the Republic of China and the Empire of Japan between 1937 and 1945, following a period of war localized to Manchuria that started in 1931.[24][25] It is considered part of World War II, and often regarded as the beginning of World War II in Asia. It was the largest Asian war in the 20th century[26] and has been described as "the Asian Holocaust", in reference to the scale of Japanese war crimes against Chinese civilians.[27][28][29] It is known in China as the War of Resistance against Japanese Aggression (simplified Chinese: 抗日战争; traditional Chinese: 抗日戰爭).
On 18 September 1931, the Japanese staged the Mukden incident, a false flag event fabricated to justify their invasion of Manchuria and establishment of the puppet state of Manchukuo. This is sometimes marked as the beginning of the war.[30][31] From 1931 to 1937, China and Japan engaged in skirmishes, including in Shanghai and in Northern China. Chinese Nationalist and Communist forces, respectively led by Chiang Kai-shek and Mao Zedong, had fought each other in the Chinese Civil War since 1927. In late 1933, Chiang Kai-shek encircled the Chinese Communists in an attempt to finally destroy them, forcing the Communists into the Long March, resulting in the Communists losing around 90% of their men. As a Japanese invasion became imminent, Chiang still refused to form a united front before he was placed under house arrest by his subordinates who forced him to form the Second United Front in late 1936 in order to resist the Japanese invasion together.
^Liu, Tinghua 刘庭华 (1995). 中国抗日战争与第二次世界大战系年要录·统计荟萃 1931–1945 (in Chinese). Haichao chubanshe. p. 312. ISBN7-80054-595-4.
^Hsu Long-hsuen "History of the Sino-Japanese war (1937–1945)" Taipei 1972
^ abClodfelter, Micheal "Warfare and Armed Conflicts: A Statistical Reference", Vol. 2, pp. 956. Includes civilians who died due to famine and other environmental disasters caused by the war. Only includes the 'regular' Chinese army; does NOT include guerrillas and does not include Chinese casualties in Manchuria or Burma.
^Bix, Herbert P. (1992), "The Showa Emperor's 'Monologue' and the Problem of War Responsibility", Journal of Japanese Studies, 18 (2): 295–363, doi:10.2307/132824, ISSN0095-6848, JSTOR132824