Uijeongbu is a city in Gyeonggi Province, South Korea. Uijeongbu is located north of the South Korean capital Seoul; it lies inside a defile, with mountains on two sides, and commands a natural choke point across the main traditional invasion route from the North into Seoul. As such it has a continued military significance and it contains U.S. and South Korean military bases, positioned for the defense of the South Korean capital. The U.S. Second Infantry Division has established a headquarters post in Uijeongbu, with the main troops being deployed from Dongducheon. U.S. military bases in Uijeongbu have since closed.