In January 1965, Pakistan claimed the area of Rann of Kutch on the basis of the
Sindh province. Pakistan's paramilitary force Indus Rangers started activity and took control over the ruined fort of Kanjarkot located on the north-west fringe of the Rann, Pakistani Indus Rangers started patrolling below the Indian claimed line by January 1965 and occupied an Indian police post near the Kanjarkot fort, which was in violation of the long-standing status quo. The Pakistan Army, equipped with US-made
Patton tanks, struck the Indian forces on 9 April. Pakistan launched a major offensive on the Sardar post comprising a brigade strength. On 24 April, Pakistan launched "
Operation Desert Hawk" a decisive thrust towards the Indian posts in the area deploying an infantry division and two armored regiments equipped with Patton tanks and
field guns. The Pakistan Army captured four more posts and claimed the whole Kanjarkot stretch. With poor logistics and inferior military hardware, India had no other option than to retreat after offering decent resistance. == Battle at Biar Bet ==