 Before the start of the Korean War, the Korean Peninsula was split by an American-backed government at the south and a Soviet-backed opposing government at the north. Divided by the 38th Parallel, both the United States and the Soviet Union agreed to maintain the division until a mutual decision was made about the future of the peninsula. On 25 June 1950, North Korean troops crossed the parallel and attacked several key South Korean targets. As the United States prepared military assistance with the South Koreans, the Soviet Union also helped the North Koreans by training pilots and providing MiG-15 aircraft. Jabara arrived in Korea on 13 December 1950 with the 334th Fighter-Interceptor Squadron of the 4th Fighter-Interceptor Wing. The squadron was the first F-86 Sabre unit deployed to the Fifth Air Force to counter the threat by the Soviet MiG-15s. By 2 January 1951, he had flown five combat missions in F-86s and had damaged one MiG-15 Korean jet fighter in air combat. Jabara achieved his first confirmed victory on 3 April 1951 when 12 F-86 Sabres took on 12 MiG-15s in MiG Alley, a region in northwestern North Korea. He was credited with another on 10 April, a third on 12 April, and a fourth on 22 April. Eager to get his fifth victory to be deemed a flying ace, Jabara voluntarily transferred to the 335th Fighter-Interceptor Squadron when the 334th was rotated back to the United States.
