The key battle during the reconquest of the Korean Peninsula by US and UN forces happened in Inchon, South Korea, and in the Yellow sea. The code name for the Inchon operation was Operation Chromite. Inchon was bombed by the UN. After this surprise attack from the sea, victory was obtained in the duel, and Inchon was taken under control. The operation involved about 75,000 troops and 261 naval vessels. The UN forces recapture Seoul, which is the capital of South Korea, in two weeks and cut off some supplies for the North Korean army. The Battle of Inchon not only bolstered the morale of the South Korean government and its allies but also marked a significant turning point in the war, forcing North Korean forces to retreat northward.