query: When did the Battle of Jangjin Lake happen?
passage: Battle of Chosin Reservoir
The battle took place about a month after the People's Republic of China entered the conflict and sent the People's Volunteer Army (PVA) 9th Army[lower-alpha 3] to infiltrate the northeastern part of North Korea. On 27 November 1950, the Chinese force surprised the US X Corps commanded by Major General Edward Almond at the Chosin Reservoir area. A brutal 17-day battle in freezing weather soon followed. Between 27 November and 13 December, 30,000[1]:24 United Nations troops (later nicknamed "The Chosin Few") under the field command of Major General Oliver P. Smith were encircled and attacked by about 120,000[3] Chinese troops under the command of Song Shilun, who had been ordered by Mao Zedong to destroy the UN forces. The UN forces were nevertheless able to break out of the encirclement and to make a fighting withdrawal to the port of Hungnam, inflicting heavy casualties on the Chinese. US Marine units were supported in their withdrawal by the US Army's Task Force Faith to their east, which suffered heavy casualties and the full brunt of the Chinese offensive. The retreat of the US Eighth Army from northwest Korea in the aftermath of the Battle of the Ch'ongch'on River and the evacuation of the X Corps from the port of Hungnam in northeast Korea marked the complete withdrawal of UN troops from North Korea.
passage: First Sino-Japanese War
On September 17, 1894, the Japanese Combined Fleet encountered the Chinese Beiyang Fleet off the mouth of the Yalu River. The naval battle, which lasted from late morning to dusk, resulted in a Japanese victory.[76] Although the Chinese were able to land 4,500 troops near the Yalu River by sunset the Beiyang fleet was near the point of total collapse, most of the fleet had fled or had been sunk and the two largest ships Dingyuan and Zhenyuan were nearly out of ammunition.[77] The Imperial Japanese Navy destroyed eight of the ten Chinese warships, assuring Japan's command of the Yellow Sea. The principal factors in the Japanese victory was the superiority in speed and firepower.[78] The victory shattered the morale of the Chinese naval forces.[79] The Battle of the Yalu River was the largest naval engagement of the war and was a major propaganda victory for Japan.[80][81]