 In the first two weeks of May 1999, several patrols were conducted in the Kaksar Langpa area of Kargil district to check whether the snow had retreated enough for the summer positions to be re-occupied.Kalia, who then held the rank of lieutenant, was the first Indian army officer to observe and report large-scale intrusion of Pakistani Army and foreign mercenaries on the Indian side of the Line of Control (LoC) at Kargil.He assumed guard of Bajrang Post at 13,000–14,000 feet to check infiltration in the Kaksar area.