Lieutenant Colonel PK. Khanna was commanding a battalion of the Sikh Regiment occupying a defended area in the Chhamb sector. During the battle of Chhamb, his battalion was subjected to incessant attacks in overwhelming strength by infantry and armour, both by day and night, between 3 and 6 December 1971. Lieutenant Colonel Khanna handled his battalion with cool courage. He acted with skill and imagination and displayed exemplary aggressive spirit in restoring the situation.

Throughout, Lieutenant Colonel PK Khanna displayed conspicuous bravery and exemplary leadership.