The 1971 war was too critical for Pakistan. They expected victory. Musharraf was very much in action then. The defeat hurt them so much that, to overcome it and divert the mind of the public, the Country moved from a Democratic Country to being an Islamic State. Musharraf was also quite taken back with this defeat. Hence when he was in charge of the Army, he tried hitting back at India thru Kargil, expecting a victory, which would help him in healing his wounds of 1971.