December 9, 1941 (October 21), Government House, the Chinese government declared war on Japan, Germany, Italy.


Chiang Kai-shek finally officially declared war on Japan on December 9, 2011,
1941, the National Government issued a proclamation, officially to Japan, Germany, Italy declared war.
in July 1937, Japan launched an all-out war of aggression against China, China launched a national war of resistance, has been completely in a state of war between China and Japan, but the national government has only released a self-defense statement during the War of Resistance against Japan ", not officially declaration of war. After the outbreak of the Pacific War, the U.S. government declared war on Japan, so National Government officially released "The Chinese government declared war on Japan proclamation explicitly declared:" formal declaration of war against Japan, told to the Chinese and foreign. All treaties, agreements and contracts, the relationship between those involved in the day to be abrogated. In September 1940 after the signing of the Tripartite Pact,
from Germany, Italy, Japan, the Nationalist government also announced, meaning the two countries broke off diplomatic relations with Germany, but it did not, Italy declared war on Germany. The day, the Nationalist government officially declared war on Japan, also issued a proclamation, Italy declared war on Germany, explicitly declared: "China is in a state of war between the two countries of Germany, Italy. All treaties, agreements and contracts involving the relationship between in Germany or in Italy, will be abrogated. "At this point, the formation of a united front of the Chinese and the British, the United States, Canada, the Netherlands, Australia, New (NZ), France and other countries.