Flight Lieutenant Kunwar Yogendra Singh posted to a Signals Unit, was charged with the responsibility of controlling a section of Gnat aircraft of an operational squadron on the 3rd September, 1965. While the section of Gnat aircraft was giving cover to another section of Mysteres engaged in close support to the Army, Flight Lieutenant K.Y Singh broadcast information accurately regarding all movement of aircraft approaching the sector in which the Gnats and Mysteres were operating and when the enemy aircraft reached the sector he deftly positioned the section of Gnats in such a manner that it was possible to achieve the first ever kill of a Pakistani F-86 Sabre Jet by a Gnat which, as it is known was piloted by Squadron Leader T. Keeler. Flight Lieutenant KY Singh was also responsible for many more successful intercept ions on the 5th, 7th, 8th and 9th September, 1965. On more than three such occasions he was in the control cabin giving broadcast control to own aircraft even though his Unit was under attack by enemy aircraft. Such coolness of head and unflinching dedication to the work on hand was possible because the officer possessed a thorough knowledge of his primary tasks and of the performance of the various aircraft he was controlling.

Flight Lieutenant KY Singh displayed a great amount of keenness and as at the operations room continuously without taking any rest especially on the first two days. He displayed a high sense of duty and resourcefulness.