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 coastal defence fire was inaccurate, and the ships doubled back and silenced the guns. Another bombardment at Inchon two days later was also successful, without damage. The only Canadian naval casualties of the Korean War occurred on 2 October 1952 during an inshore patrol by on the east coast, inflicted by a coastal defence battery: 3 sailors died and 10 were wounded. Canadian ships destroyed 8 of the 28 trains destroyed by United Nations forces, and alone hit 3 trains. The first dispatch was: , and , which were followed by , "Iroquois", , and "Crusader". 3621 Canadian sailors participated.