paragraph_text: SS "Red Oak Victory" is a U.S. military Victory ship of the used in the Second World War. She was preserved to serve as a museum ship in Richmond, California, and is part of the Rosie the Riveter/World War II Home Front National Historical Park. She was one of 534 Victories built during World War II, but one of only a few of these ships to be transferred from the Merchant Marine to the United States Navy. She was named after Red Oak, Iowa, which suffered a disproportionate number of casualties in early World War II battles. (Montgomery County ranked third among Iowa counties in World War II casualties per capita). The ship was active during World War II, the Korean War, and the Vietnam War.

paragraph_text: The "Schwerer Wehrmachtschlepper" (Heavy Military Tractor), or sWS, was a German World War II half-track vehicle used in various roles between 1943 and 1945. The unarmored models were used as supply vehicles and as tractors to haul artillery. Armored versions mounted anti-aircraft guns or a 10 barrel rocket launcher ("Nebelwerfer"). Less than a thousand were built before the end of the war, but production continued after the war of an improved model in the Tatra plant in Czechoslovakia.

paragraph_text: The Korean War (in South Korean Hangul: 한국전쟁, Hanja: 韓國戰爭, Hanguk Jeonjaeng, "Korean War"; in North Korean Chosungul: 조국해방전쟁, Joguk Haebang Jeonjaeng, "Fatherland Liberation War"; 25 June 1950 – 27 July 1953)[a] was started when North Korea invaded South Korea. The United Nations, with United States as the principal force, came to aid of South Korea. China, along with assistance from Soviet Union, came to aid of North Korea. The war arose from the division of Korea at the end of World War II and from the global tensions of the Cold War that developed immediately afterwards.

paragraph_text: The FG 42 (German: "Fallschirmjägergewehr" 42, "paratrooper rifle 42") is a selective-fire 7.92×57mm Mauser automatic rifle produced in Nazi Germany during World War II. The weapon was developed specifically for the use of the Fallschirmjäger airborne infantry in 1942 and was used in very limited numbers until the end of the war.

paragraph_text: The phrase originated on propaganda posters during World War II. The phrase was created by the War Advertising Council and used on posters by the United States Office of War Information.

paragraph_text: This List of Japanese Navy ships and war vessels in World War II is a list of seafaring vessels of the Imperial Japanese Navy of World War II. It includes submarines, battleships, oilers, minelayers and other types of Japanese sea vessels of war and naval ships used during wartime.

paragraph_text: The relations between the United States of America and the Union of Soviet Socialist Republics (1922 -- 1991) succeeded the previous relations from 1776 to 1917 and predate today's relations that began in 1992. Full diplomatic relations between the two countries were established late due to mutual hostility. During World War II, the two countries were briefly allies. At the end of the war, the first signs of post-war mistrust and hostility began to appear between the two countries, escalating into the Cold War; a period of tense hostile relations, with periods of détente.

paragraph_text: 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.

paragraph_text: Production ended in 1949. By that time 1,958 were manufactured before German occupation, and further production is unknown. The French police continued to use the MAS-38 after World War II until it was replaced in the 1950s by the MAT-49 submachine gun.

paragraph_text: The end of World War II in Asia occurred on 14 and 15 August 1945, when armed forces of the Empire of Japan surrendered to the forces of the Allies. The surrender came over three months after the surrender of the Axis forces in Europe and brought an end to World War II.

paragraph_text: The Coordinating Committee for Multilateral Export Controls (CoCom) was established by Western bloc powers in the first five years after the end of World War II, during the Cold War, to put an arms embargo on Comecon countries. CoCom ceased to function on March 31, 1994, and the then-current control list of embargoed goods was retained by the member nations until the successor, the Wassenaar Arrangement, was established.

paragraph_text: Hans Howaldt (12 November 1888, Kiel – 6 September 1970) was a successful and highly decorated German U-boat commander in the Kaiserliche Marine during World War I and also active in World War II. By the end of World War I he was promoted Kapitänleutnant.

paragraph_text: The Dead Stay Young ("Die Toten Bleiben Jung") is a 1949 novel by German author Anna Seghers. The book describes Communists secretly working in Germany between the end of World War I and the outbreak of World War II.

paragraph_text: From childhood, Gaddafi was aware of the involvement of European colonialists in Libya; his nation was occupied by Italy, and during the North African Campaign of World War II it witnessed conflict between Italian and British troops. According to later claims, Gaddafi's paternal grandfather, Abdessalam Bouminyar, was killed by the Italian Army during the Italian invasion of 1911. At World War II's end in 1945, Libya was occupied by British and French forces. Although Britain and France intended on dividing the nation between their empires, the General Assembly of the United Nations (UN) declared that the country be granted political independence. In 1951, the UN created the United Kingdom of Libya, a federal state under the leadership of a pro-western monarch, Idris, who banned political parties and established an absolute monarchy.

paragraph_text: The removal of Hungary's border fence with Austria occurred in 1989 during the collapse of communism in Hungary, which was part of a broad wave of revolutions in various communist countries of Central and Eastern Europe. The dismantling of the electric fence along Hungary's 240 kilometres (149 mi) long border with Austria was the first fissure in the ``Iron Curtain ''that had divided Europe for more than 40 years, since the end of World War II, and caused a chain reaction in East Germany that ultimately resulted in the demise of the Berlin Wall.

paragraph_text: The end of World War II brought a baby boom to many countries, especially Western ones. There is some disagreement as to the precise beginning and ending dates of the post-war baby boom, but it is most often agreed to have begun in the years immediately after the war, though some place it earlier at the increase of births in 1941 - 1943. The boom started to decline as birth rates in the United States started to decline in 1958, though the boom would only grind to a halt 3 years later in 1961, 20 years after it began.

paragraph_text: At the end of the Balkan Wars, the extent of Greece's territory and population had increased. In the following years, the struggle between King Constantine I and charismatic Prime Minister Eleftherios Venizelos over the country's foreign policy on the eve of World War I dominated the country's political scene, and divided the country into two opposing groups. During parts of the First World War, Greece had two governments; a royalist pro-German government in Athens and a Venizelist pro-Britain one in Thessaloniki. The two governments were united in 1917, when Greece officially entered the war on the side of the Triple Entente.

paragraph_text: Ludwig Bieringer (1892–1975) was a German general during World War II. A lifelong professional soldier, he served his country as a junior officer in World War I, a staff officer in the inter-war period and a brigade-level commander during World War II.

paragraph_text: When World War II started in 1939, it divided the world into two alliances—the Allies (the United Kingdom and France at first in Europe, China in Asia since 1937, followed in 1941 by the Soviet Union, the United States); and the Axis powers consisting of Germany, Italy and Japan.[nb 1] During World War II, the United States, United Kingdom, and Soviet Union controlled Allied policy and emerged as the "Big Three". The Republic of China and the Big Three were referred as a "trusteeship of the powerful"  and were recognized as the Allied "Big Four" in Declaration by United Nations in 1942. These four countries were referred as the "Four Policemen" of the Allies and considered as the primary victors of World War II. The importance of France was acknowledged by their inclusion, along with the other four, in the group of countries allotted permanent seats in the United Nations Security Council.

paragraph_text: Others follow the British historian A.J.P. Taylor, who held that the Sino - Japanese War and war in Europe and its colonies occurred simultaneously and the two wars merged in 1941. This article uses the conventional dating. Other starting dates sometimes used for World War II include the Italian invasion of Abyssinia on 3 October 1935. The British historian Antony Beevor views the beginning of World War II as the Battles of Khalkhin Gol fought between Japan and the forces of Mongolia and the Soviet Union from May to September 1939.

Question: When did the U.S. go to war with the country which was divided at the end of World War II?
Answer: the Battle of Osan