In the early days of the Korean War, things looked pretty bleak for the American and South Korean forces in the Korean Peninsula. The sudden Communist advance across the 38th parallel took the allies by complete surprise, and despite stiff resistance, North Korean troops almost pushed the U.S. and South Korea into the Sea of Japan. Those defenders fell back into a 140-mile battle line around the port city of Pusan (now Busan) at the southeastern tip of the peninsula. They determined that...