Dilbagh Singh was commissioned as a pilot in 1944.[3] His operational flying career spanned the Spitfire to introducing the MiG-21 into service in India. He had earlier made the first official "supersonic bang" over India in New Delhi when the Mystere IV-A was showcased in a public demonstration.
He was India's ambassador to Brazil from 1985 to 1987. He was a student of pandit Buta Ram of Rahon. His visit to Rahon to visit his teacher when he was Air Marshal is still remembered. He inspired scores of youngsters from Rahon and Nawanshahar region to join defense forces