Question: When did the US go to war with country from which the name Shinn originates?

full_context: Document 1: Shin (Korean surname): Shin is a Korean family name. It is cognate to the Chinese family names Shēn and Xin. According to the 2000 census in South Korea, there were 911,556 people carrying the Shin surname.
Document 2: Chiron (missile): The KP-SAM Shin-Gung or Shin-Kung (Korean: hangul: 신궁, hanja: 新弓) is a South Korean shoulder-launched surface-to-air missile manufactured by LIG Nex1. It is marketed internationally as the Chiron.
Document 3: Korean War: The Battle of Osan, the first significant American engagement of the Korean War, involved the 540-soldier Task Force Smith, which was a small forward element of the 24th Infantry Division which had been flown in from Japan. On 5 July 1950, Task Force Smith attacked the North Koreans at Osan but without weapons capable of destroying the North Koreans' tanks. They were unsuccessful; the result was 180 dead, wounded, or taken prisoner. The KPA progressed southwards, pushing back the US force at Pyongtaek, Chonan, and Chochiwon, forcing the 24th Division's retreat to Taejeon, which the KPA captured in the Battle of Taejon; the 24th Division suffered 3,602 dead and wounded and 2,962 captured, including the Division's Commander, Major General William F. Dean.
Document 4: Chae Myung-shin: Chae commanded "Skeleton Corps", guerrilla corps during the Korean War, and became the authority on guerrilla tactics of the South Korean Army.
Document 5: Chinese characters: When learning how to write hanja, students are taught to memorize the native Korean pronunciation for the hanja's meaning and the Sino-Korean pronunciations (the pronunciation based on the Chinese pronunciation of the characters) for each hanja respectively so that students know what the syllable and meaning is for a particular hanja. For example, the name for the hanja 水 is 물 수 (mul-su) in which 물 (mul) is the native Korean pronunciation for "water", while 수 (su) is the Sino-Korean pronunciation of the character. The naming of hanja is similar to if "water" were named "water-aqua", "horse-equus", or "gold-aurum" based on a hybridization of both the English and the Latin names. Other examples include 사람 인 (saram-in) for 人 "person/people", 큰 대 (keun-dae) for 大 "big/large//great", 작을 소 (jakeul-so) for 小 "small/little", 아래 하 (arae-ha) for 下 "underneath/below/low", 아비 부 (abi-bu) for 父 "father", and 나라이름 한 (naraimreum-han) for 韓 "Han/Korea".
Document 6: Korean War: In the resulting Battle of Pusan Perimeter (August–September 1950), the U.S. Army withstood KPA attacks meant to capture the city at the Naktong Bulge, P'ohang-dong, and Taegu. The United States Air Force (USAF) interrupted KPA logistics with 40 daily ground support sorties that destroyed 32 bridges, halting most daytime road and rail traffic. KPA forces were forced to hide in tunnels by day and move only at night. To deny matériel to the KPA, the USAF destroyed logistics depots, petroleum refineries, and harbors, while the U.S. Navy air forces attacked transport hubs. Consequently, the over-extended KPA could not be supplied throughout the south. On 27 August, 67th Fighter Squadron aircraft mistakenly attacked facilities in Chinese territory and the Soviet Union called the UN Security Council's attention to China's complaint about the incident. The US proposed that a commission of India and Sweden determine what the US should pay in compensation but the Soviets vetoed the US proposal.
Document 7: United States in the Korean War: The first battle the Americans entered in the Korean War was the Battle of Osan, where about four hundred strong landed in Pusan airport on the first of July. The American troops were sent off to Taejon the next morning where Major General John H. Church the head of U.S. field headquarters was confident in the US troop's strengths to push back the North Koreans. On July fifth the troops were finally put to the test when North Korean tanks crept towards Osan. The four hundred infantryman of the U.S. also called Task Force Smith opened fire on the North Koreans at 8: 16 am. Only four of the North Korean tanks were destroyed and twenty - nine kept moving forward breaking the US line. At the end of the battle only two more North Korean Tanks and two regiments of North Korean infantry were destroyed. The US had lost the battle, revealing that the mere sight of US troops would not reverse the military balance in Korea. By early August, the North Korean troops had pushed back the US and South Korean troops all the way to Naktong River, which is located about thirty miles from Pusan. The two weeks of fighting following this resulted in the most casualties of US troops than any other equivalent period of this war. However, during this time the US pushed supplies and personnel to Korea and by the end of July South Koreans and US troops outnumbered the North Koreans, although the North had pushed back the US and South by an amazing amount the North had suffered over fifty thousand casualties. Also because North Koreas supply lines were so lengthy and with the US in control of the water and air replenishing there losses were slow.
Document 8: Chinese name: Modern Chinese names consist of a surname known as xing (姓, xìng), which comes first and is usually but not always monosyllabic, followed by a personal name called ming (名, míng), which is nearly always mono - or disyllabic. Prior to the 20th century, educated Chinese also utilized a ``courtesy name ''or`` style name'' called zi (字, zì) by which they were known among those outside their family and closest friends.
Document 9: Battle of Taejon: The Battle of Taejon (14–21 July 1950) was an early battle of the Korean War, between American and North Korean forces. Forces of the United States Army attempted to defend the headquarters of the 24th Infantry Division. The 24th Infantry Division was overwhelmed by numerically superior forces of the Korean People's Army (KPA) at the major city and transportation hub of Taejon. The 24th Infantry Division's regiments were already exhausted from the previous two weeks of delaying actions to stem the advance of the KPA.
Document 10: Korean War: After the Incheon landing, the 1st Cavalry Division began its northward advance from the Pusan Perimeter. "Task Force Lynch" (after Lieutenant Colonel James H. Lynch), 3rd Battalion, 7th Cavalry Regiment, and two 70th Tank Battalion units (Charlie Company and the Intelligence–Reconnaissance Platoon) effected the "Pusan Perimeter Breakout" through 106.4 miles (171.2 km) of enemy territory to join the 7th Infantry Division at Osan. The X Corps rapidly defeated the KPA defenders around Seoul, thus threatening to trap the main KPA force in Southern Korea.
Document 11: United States in the Korean War: In response to North Korea's invasion into South Korea the United Nations convened to formulate a response. The U.N. demanded North Korea's immediate withdrawal and, when this was not met, United States Army General Douglas MacArthur was appointed supreme commander of U.N. forces. To halt the rapid progress of North Korean forces into the south Task Force Smith was deployed to the Korean front from Japan. Task Force Smith consisted of U.S. Army officers and regiments of the Army's 24th Infantry Division that were stationed in Japan as occupational forces. Unfortunately the 24th were under trained, poorly supplied, and outnumbered. The 24th offered very little resistance against the North Korean advance. American and South Korean troops were pushed south and in late July 1950 Task Force Smith was overrun in the city of Taejon. Troops from the Army's 25th Infantry Division were deployed to Taejon to establish a new line and pullout the decimated 24th I.D. This addition of combat troops did not stop the North Korean advance and both American and South Korean troops were pushed further south.
Document 12: Han (Chinese surname): Han (simplified Chinese: 韩; traditional Chinese: 韓; pinyin: Hán; Korean: 한) is a common Chinese surname. The spelling ``Han ''is based on China's pinyin system and so used throughout Mainland China. Spelling can vary from 'Hon' in Cantonese - speaking areas to 'Hang' in Hainan.
Document 13: World population milestones: Country / nationality Population Born (date) Name and surname Notes Foot - notes Munich 1m 15 December 1957 Thomas Seehaus Awarded by Mayor Thomas Wimmer with a 1,000 mark savings account. United States 200m 20 November 1967 Robert Ken Woo Jr Named by Life magazine, not the government. None named for 300m. Australia 15m 29 January 1982 Sally Hodgson Awarded by Minister for Immigration and Ethnic Affairs Ian Macphee Indonesia 200m 4 February 1997 Wahyu Nusantara Aji Complains that government promises of support were not kept India 1b 11 May 2000 Aastha Arora speculation re Independence Day 1999 till Registrar demurred. Complains that government promises of support were not kept. Kyrgyzstan 5m 27 August 2002 Tynchtykbek Kuramayev Australia 21m 29 June 2007 Mia Ruby Templeton Awarded by Treasurer Peter Costello Taiwan 23m 17 July 2008 Wu Cheng - en certificate from Premier of the Republic of China Liu Chao - shiuan Auckland Region, New Zealand 1.5 m 1 February 2012 Ramonah Patience Toomalatai Welcomed by Len Brown the Mayor of Auckland Kazakhstan 17m 17 May 2013 Altynbek Eskaraev Алтынбек Ескараев Vietnam 90m 1 November 2013 Nguyễn Thị Thùy Dung randomly chosen by the General Office of Population and Family Planning from among two dozen babies born that day Philippines 100m 27 July 2014 Chonalyn Sentino Wake County, North Carolina 1m 22 August 2014 Anderson Grace Hughes Offered full scholarship by Wake Technical Community College Mongolia 3m 24 January 2015 Mongoljin Khatanbold Silicon Valley 3m 5 May 2015 Max Danner Utah 3m 24 October 2015 Sadie Christensen By governor Gary Herbert Kyrgyzstan 6m 27 November 2015 Aylin Kojosheva
Document 14: Korean War: On 25 November at the Korean western front, the PVA 13th Army Group attacked and overran the ROK II Corps at the Battle of the Ch'ongch'on River, and then decimated the US 2nd Infantry Division on the UN forces' right flank. The UN Command retreated; the U.S. Eighth Army's retreat (the longest in US Army history) was made possible because of the Turkish Brigade's successful, but very costly, rear-guard delaying action near Kunuri that slowed the PVA attack for two days (27–29 November). On 27 November at the Korean eastern front, a U.S. 7th Infantry Division Regimental Combat Team (3,000 soldiers) and the U.S. 1st Marine Division (12,000–15,000 marines) were unprepared for the PVA 9th Army Group's three-pronged encirclement tactics at the Battle of Chosin Reservoir, but they managed to escape under Air Force and X Corps support fire—albeit with some 15,000 collective casualties.
Document 15: Korean War: Meanwhile, U.S. garrisons in Japan continually dispatched soldiers and matériel to reinforce defenders in the Pusan Perimeter. Tank battalions deployed to Korea directly from the U.S. mainland from the port of San Francisco to the port of Pusan, the largest Korean port. By late August, the Pusan Perimeter had some 500 medium tanks battle-ready. In early September 1950, ROK Army and UN Command forces outnumbered the KPA 180,000 to 100,000 soldiers. The UN forces, once prepared, counterattacked and broke out of the Pusan Perimeter.
ground_truth: the Battle of Osan
sub_queries: where does the last name shinn come from Answer: Korea
when did the us go to war with Korea Answer: the Battle of Osan