The Battle of Battle Mountain was an engagement between United Nations Command (UN) and North Korean forces early in the Korean War from August 15 to September 19, 1950, on and around the Sobuk-san mountain area in South Korea. It was one of several large engagements fought simultaneously during the Battle of Pusan Perimeter. The battle ended in a victory for the UN after large numbers of United States Army (US) and Republic of Korea Army (ROK) troops were able to prevent a Korean People's Army (KPA) division from capturing the mountain area. Operating in defense of Masan, the US 25th Infantry Division placed its 24th Infantry Regiment and 5th Infantry Regiment on Sobuk-san to defend its two peaks, P'il-bong and Hill 665, which would later be known as "Battle Mountain." What followed was a month-long struggle with the KPA 6th Division, in which Battle Mountain changed hands 20 times. During the deadlock, neither side was able to secure a definite victory in capturing the mountaintop, but the US forces succeeded in their mission of preventing the KPA from advancing beyond Battle Mountain, paving the way for the KPA's eventual defeat and withdrawal. Background Outbreak of war Following the June 25, 1950, outbreak of the Korean War as a result of the invasion of South Korea by North Korea, the United Nations committed troops to the conflict in support of South Korea. The United States, subsequently dispatched ground forces to the Korean peninsula with the goal of pushing back the North Korean invasion and preventing South Korea from collapsing. However, the number of US forces in the Far East had been steadily decreasing since the end of World War II, five years earlier, and at the time the closest forces were the 24th Infantry Division, headquartered in Japan. The division was understrength however, and most of its equipment was antiquated due to reductions in military spending. Regardless, the 24th was ordered to South Korea. The 24th Infantry Division was the first US unit sent into Korea with the mission to take the initial "shock" of KPA advances, delaying the much larger KPA units to buy time to allow reinforcements to arrive. The division was consequently alone for several weeks while the 1st Cavalry Division and the 7th and 25th Infantry Divisions moved into position, along with other Eighth United States Army supporting units. Advance elements of the 24th Division were