Defence Day is celebrated in Pakistan as a national day on 6 September in memory of those who martyred in the Indo-Pakistani war of 1965 and successful defence of Lahore, Sialkot and other important areas of the country.
The Indo-Pakistani War of 1965 was a culmination of skirmishes that took place between April 1965 and September 1965 between Pakistan and India. This conflict became known as the Second Kashmir War fought by India and Pakistan over the disputed region of Kashmir, the first having been fought in 1947. The war began following Pakistan’s Operation Gibraltar, which was designed to infiltrate forces into Jammu and Kashmir to precipitate an insurgency against rule by India.
The five-week war caused thousands of casualties on both sides. It ended in a United Nations (UN) mandated ceasefire and the subsequent issuance of the Tashkent Declaration.