1965 War

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The war began in April 1965, when fighting broke out in the Rann of Kachchh, a region along the West Pakistan-India border.
Pakistan had planned to organise a "Kashmir Revolt Day" on August 9, 1965, to mark the twelfth anniversary of Sheikh Abdullah's arrest and on the same day its forces were to reach Srinagar with machine guns, mortar and other heavy equipment. India retaliated and a full-fledged war erupted which lasted till September 23, 1965 and in September Pakistani and Indian troops crossed the partition line between the two countries and launched air assaults on each other's cities.

The Pakistan Army used the SSG of commandos to sabotage Indian Air Force bases at Pathankot, Adampur and Halwara. While the main body of commandos were parachuted into Punjab, a good number were dropped into other Indian states.
Indian troops gained Pakistani territory, almost reaching Lahore. Pakistan wins some parts of Kashmir.

The Indian authorities informed the US about the use of American weapons by the Pakistani forces. Pakistan was under an obligation under the Mutual Security Act, not to use American weapons in aggression against any other country. This led the US government to impose an arms embargo on both the belligerents on September 8, 1965. On the following day, the State Department declared US neutrality in the Indo-Pak conflict.

In 1966  Indo-Pak summit is held at Tashkent. The treaty regarding the exchange of prisoners of war (POW) and territories won is signed. Indian Prime Minister Lal Bahadur Shastri dies at the summit.