The Korean War (Korean: ) was a conflict between North Korea and South Korea that took place from June 25, 1950 to July 27, 1953. This war is also known as a proxy war (English: proxy war) between the United States and its United Nations allies. with the communist People's Republic of China in cooperation with the Soviet Union (also a member of the United Nations). The main war participants were North Korea and South Korea. South Korea's main allies are the United States, Canada, Australia, and the United Kingdom, although many other countries send troops under the banner of the United Nations. North Korea's allies, such as the People's Republic of China, provided military strength, while the Soviet Union provided war advisors, aircraft pilots, and weaponry to Chinese and North Korean forces.
In the United States, this war is officially described as a police action because there is no official declaration of war from the US Congress. In everyday language, this war is also often called the "forgotten war" or "the unknown war", because it is considered a UN affair that ends in a stalemate, few US casualties, and the lack of clarity on the issues causing this war is compared to the Vietnam War and World War II. In South Korea, this war is commonly referred to as the 6-2-5 War (yuk-io jeonjaeng) reflecting the date the war started on June 25. Meanwhile, in North Korea, this war is officially called choguk haebang chǒnjaeng ("war of liberation of the homeland"). The Korean War is also called Chosǒn chǒnjaeng ("Joseon War", Joseon is North Korea's designation for Korean land). The Korean War is officially called Chao Xian Zhan Zheng（朝鲜战争） (Korean War) in the People's Republic of China. The word "Chao Xian" refers to Korea in general, and officially North Korea.
The term Korean War can also refer to fighting before the invasion or after the armistice.
Japanese Occupation (1910–1945)
After defeating China's Qing Dynasty in the First Sino-Japanese War (1894–96), the Japanese Empire occupied the Korean Empire (1897–1910) led by Emperor Gojong. A decade later, when defeating the Russian Empire in the Russo-Japanese War (1904–05), Japan made Korea its protectorate through the Treaty of Eulsa in 1905, then annexed it through the Japan-Korea Annexation Treaty in 1910. fledgling nationalists and intellectuals. Some of them formed the Provisional Government of Korea, led by Syngman Rhee, in Shanghai in 1919, and became a government in exile recognized by few countries. Between 1919 and 1925, the Korean communists began their rebellion against Japan. Korea was considered part of the Empire of Japan along with Taiwan, which was part of the Greater East Asia Co-Prosperity Area. In 1937, Governor-General Jirō Minami ordered the assimilation of Japanese culture to the colony's 23.5 million inhabitants by banning Korean language, literature, and culture, replacing them with Japanese culture, and ordering Koreans to change their names to Japanese names. In 1938, the colonial government implemented a system of forced labor; until 1939, 2.6 million Koreans worked overseas as forced laborers; in 1942, men in Korea were forced into the Japanese army.
Meanwhile in China, the nationalist group the National Revolutionary Army and the communist group the People's Liberation Army (right-wing and left-wing) organized the displaced Korean patriots. The Nationalists led by Yi Pom-sok fought in the Battle of Burma (December 1941 — August 1945). The communist group, under the leadership of Kim Il-sung, fought against the Japanese in Korea. During World War II, the Japanese army used food, livestock,