"...The Chinese had driven the US Army back for hundreds of miles since entering the war. Morale was low, and the Soldiers had begun to think of the Chinese as unstoppable. This new attack punched several holes in the UN lines, and the situation was grim. The American commander, General Matthew Ridgway, decided to make a stand at Chip’yong-ni to give the rest of the Army time to recover."
"US casualties at Chip’yong-ni totaled 404, including 52 Soldiers killed. Chinese losses were far greater. Captured documents later revealed that the enemy suffered at least 5,000 casualties."
more here: The Battle of Chip’yong-ni