During the operation against Pakistan in December, 1971, Flying Officer Jai Singh Gahalawat as a pilot in a Fighter-Bomber Squadron, flew several operational missions against the enemy. On the 5th December he carried out a strike in Kathua sector and destroyed a bridge. On the 7th December, while on a close support mission, he des troyed a number of enemy tanks. During one of his missions his aircraft was badly hit by enemy ground fire but he remained calm and cool and brought the aircraft back safely. On the 9th December 1971, he was number two in a two aircraft formation when the formation was attacked by six enemy Mirages. He kept a good look around and gave full cover to and support to his leader. Even though 12 Air to Air missiles were fired at them by the enemy aircraft. The formation safely returned to base. On the 10th December while on a close air support mission in Chhamb sector he saw his leader being hit by ground fire and crashing but he remained unperturbed and pressed home his attack on the enemy concentration causing heavy damage.

Throughout, Flying Officer Jai Singh Gahalawat displayed gallantry, professional skill and devotion to duty of a high order.