The IAF has enhanced capability of its frontline base in Punjab's Halwara, which is close to the Indo-Pak border, by deploying additional Sukhoi fighter jets.
The Su-30 MKI jets on Monday inducted into the IAF's 'Valiant' squadron.
The deployment of additional Su-30 MKI jets at the airbase comes amid heightened tensions between India and Pakistan.
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The 'Valiant' was formed as an offensive fighter squadron in 1963 at Barrackpore in West Bengal.
The squadron was then equipped with three types of aircraft — the Vampires, Spitfire, Hurricane and Su-7.
The squadron has changed many bases during its 54 years long journey and has taken part in the 1971 war as well as in Kargil operations.
"The 'Valiants', operating MiG-23s, were the first ones to fire weapons on the enemy during the Kargil war," the IAF said in a release.
Air Marshal C Hari Kumar, Air Officer Commanding-in- Chief, Western Air Command IAF was the chief guest for the induction ceremony.