Australia in the Korean War 1950–53
Australia in the Korean War 1950–53 is the official history of Australia's involvement in the Korean War. The series consists of two volumes covering Australia's strategy and diplomacy in the war and the Australian military's combat operations respectively. Both volumes were written by Robert O'Neill, and they were published in 1981 and 1985.
2nd Ranger Infantry Company (United States)
On 25 June 1950 the Korean War began when the North Korean People's Army invaded the Republic of Korea (ROK) with 90,000 well-trained and equipped troops who easily overran the smaller and more poorly equipped Republic of Korea Army. In response, the United States (U.S.) and United Nations (UN) began an intervention campaign to prevent South Korea from collapsing. The U.S. troops engaged the North Koreans first at the Battle of Osan where they were badly defeated on 5 July by the better-trained North Koreans. From there, the U.S. and UN suffered a steady stream of defeats that pushed them back to the Pusan Perimeter by August. At the same time, North Korean agents began to infiltrate behind UN lines and attack military targets and cities.