Korean War Notes <Tab/> At 4:00 a.m. Sunday morning, 25 June 1950, North Korea crossed the 38th Parallel (known as the "Line of Demarcation" in that part of the world), and launched a full-scale invasion of South Korea. The UN Security Council immediately passed a resolution calling on the "Democratic People's Republic of Korea" (the DPRK) to cease hostilities and to withdraw. When the North Koreans refused, the Security Council passed a second …showed first 75 words of 1148 total…

…showed last 75 words of 1148 total…Heartbreak Ridge where UN forces were fighting that summer and fall. By late October, UN operations had secured most of the "commanding ground along the length of the front." Holding that ground cost approximately 40,000 UN casualties. But because the United Nations Command had taken the offensive, refusing to back down, it was clear to North Korea and its allies that more losses would ensue if the fighting continued. The parties returned to the bargaining table.