Following a significant military operation, U.S. and Republic of Korea forces successfully recaptured which city from the North Koreans?

The city that U.S. and Republic of Korea forces successfully recaptured from the North Koreans following a significant military operation is Seoul. This operation took place during the Korean War. After the North Korean invasion in 1950, Seoul fell to North Korean forces early in the conflict. However, the successful counteroffensive by UN forces, particularly during the late stages of the war, led to the retaking of Seoul in March 1951.

Seoul's recapture was a critical strategic and symbolic moment in the war, as it served as the capital of South Korea and its liberation provided a significant morale boost to South Korean and U.S. forces. The city has played an essential role throughout the conflict and remains central to the political landscape on the Korean Peninsula.