As Chinese and North Korean forces surged across the 38th parallel, they dealt a crushing blow to the South Korean and UN forces, recapturing the strategic city of Seoul for the second time during the Korean War. The surprise counterattack, code-named the "Third Phase Campaign", saw the communist forces rapidly advance, pushing the enemy back and reoccupying the capital city. This devastating turn of events marked a significant shift in the war's momentum, forcing the UN forces to regroup and reassess their strategy. The battle for Seoul would continue to rage on, with both sides suffering heavy losses, but for now, the city was firmly back in communist hands.