Korean War two years of fighting became a war of attrition, with the front line close to the 38th parallel. The war in the air, however, was never a stalemate. North Korea was subject to a massive bombing campaign. Jet fighters confronted each other in air-to-air combat for the first time in history, and Soviet pilots covertly flew in defense of their communist allies. The fighting ended on 27 July 1953, when an armistice was signed. The agreement created the Korean Demilitarized Zone to separate North and South Korea, and allowed the return of prisoners. However, no peace treaty was ever signed,
Canada in the Korean War June 1950 beginning a civil war. The invasion of South Korea came as a surprise to the United Nations. The day the war began, the United Nations immediately drafted UNSC Resolution 82, which called for: When the North Korean Army crossed into South Korea on 25 June 1950, they advanced for the capital Seoul, which fell in less than a week. North Korea's forces continued toward the port of Pusan, a strategic goal and the seat of the ROK government. The forces of the North conquered all of Korea except for this tiny enclave at the end of the peninsula.