Chinese Civil War: Establishment of the People's Liberation Army Navy.

The People's Liberation Army Navy (PLAN; Chinese: ; pinyin: Zhnggu Rnmn Jifngjn Hijn), also known as the People's Navy, Chinese Navy, or PLA Navy, is the maritime service branch of the People's Liberation Army.

The PLAN traces its lineage to naval units fighting during the Chinese Civil War and was established on 23 April 1949. Throughout the 1950s and early 1960s, the Soviet Union provided assistance to the PLAN in the form of naval advisers and export of equipment and technology.Until the late 1980s, the PLAN was largely a riverine and littoral force (brown-water navy). In the 1990s, following the fall of the Soviet Union and a shift towards a more Forward-oriented foreign and security policy, the leaders of the Chinese military were freed from worrying overland border disputes. Having traditionally been subordinated to the PLA Ground Force, PLAN leaders were able to advocate for a renewed attention towards the seas.

Chinese military officials have outlined plans to operate in the first and second island chains, and are working towards blue water capability. Chinese strategists term the development of the PLAN from a green-water navy into "a regional blue-water defensive and offensive navy." As the PLAN expands into a blue-water navy, regular exercises and naval patrols into the South China Sea has been increased, particularly near the Senkaku Islands and the island of Taiwan, which it claims. The People's Republic of China (PRC) along with the Republic of China (ROC), Vietnam, Brunei, Malaysia, and the Philippines claims a significant amount of maritime boundary located within the South China Sea.The People's Liberation Army Navy is composed of five branches; the Submarine Force, the Surface Force, the Coastal Defense Force, the Marine Corps and the Naval Air Force. With a personnel strength of 240,000 personnel, including 15,000 marines and 26,000 naval air force personnel, it is the second largest navy in the world in terms of tonnage which stands at 1,820,222 tonne as of 2019, only behind the United States Navy, and has the largest number of major surface combatants of any navy globally with an overall battle force of approximately 350 surface ships and submarines in comparison, the United States Navy's battle force is approximately 293 ships.

The Chinese Civil War was a civil war in China fought between the Kuomintang (KMT)-led government of the Republic of China (ROC) and forces of the Chinese Communist Party (CCP) lasting intermittently after 1927.

The war is generally divided into two phases with an interlude: from August 1927 to 1937, the KMT-CCP Alliance collapsed during the Northern Expedition, and the Nationalists controlled most of China. From 1937 to 1945, hostilities were put on hold, and the Second United Front fought the Japanese invasion of China with eventual help from the Allies of World War II. The civil war resumed with the Japanese defeat, and the CCP gained the upper hand in the final phase of the war from 1945 to 1949, generally referred to as the Chinese Communist Revolution.

The Communists gained control of mainland China and established the People's Republic of China (PRC) in 1949, forcing the leadership of the Republic of China to retreat to the island of Taiwan. Starting in the 1950s, a lasting political and military standoff between the two sides of the Taiwan Strait has ensued, with the ROC in Taiwan and the PRC in mainland China both officially claiming to be the legitimate government of all China. After the Second Taiwan Strait Crisis, both tacitly ceased fire in 1979, however, no armistice or peace treaty has ever been signed.