The Second Sino-Japanese War was a war fought between the Republic of China and the Empire of Japan. This war was folded into the overall global conflict of World War II when Japan attacked the United States and Britain in December 1941 and China and many other enemies of Japan joined the Allied Forces.
The Second Sino-Japanese War was a proving ground for many of the Japanese soliders and sailors who conquered Hawaii. Many found occupation duty on the islands to be far less dangerous, as few of the Hawaiians were as rebellious as the Chinese.
The Second Sino-Japanese War was halted (along with World War II) by the invasion of the Race's Conquest Fleet in 1942, when many Japanese forces were driven from mainland China by Race forces, and those Japanese that remained fought the Race side by side with both China's Nationalists and Communists.