What is known about Op Safed Sagar, on which Siddharth's series is based on?

'Operation Safed Sagar', starring Siddharth and Jimmy Shergill, is based on the real-life missions undertaken by the Indian Air Force during the 1999 Kargil War. The IAF combined arms with Indian Army to recapture territory and flush out Pakistani Army troops in the Kargil sector along the LoC. The IAF conducted combat missions above 16,000 feet for the first time.