共同警備区域
For the next 50 years, the unit underwent several organizational and name changes, although the original mission to secure the Joint Security Area remains the same today as it was in 1952. On June 11, 1979, the name was changed from US Army Support Group (Joint Security Area) to United Nations Command Support Group—Joint Security Area, and further changed to United Nations Command Security Force—Joint Security Area on December 23, 1985. On October 15, 1994, UNC Commander directed that the unit be known by its present designation, the United Nations Command Security Battalion—Joint Security Area.