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,
Australia in the Korean War 1950–53 the editor of "The Official History of Australia's Involvement in Southeast Asian Conflicts 1948–1975", states that the first volume in the series has been of most importance to Australian historiography due to its "detailed and authoritative" coverage of the ANZUS treaty. There was little public interest in the books after they were released, however, and sales of both volumes were slow. Australia in the Korean War 1950–53 Australia in the Korean War 1950–53 is the official history of Australia's involvement in the Korean War. The series consists of two volumes covering Australia's strategy and diplomacy in the war and the