On 3 June 1956 'A' Company of 3 SIKH LI was ordered to mount an attack at dawn on Chephana village in the Naga Hills, in which hostiles were in position. Second Lieutenant Polur Muthuswamy Raman, commanding Number 2 Platoon was to assault and clear the village. As soon as he entered the village, intense firing poured on him from Light Machine Guns, sten guns and rifles. Owing to low visibility, he was unable to determine the extent of his own position or that of the hostiles, and the hail of bullets from the latter checked the advance of his platoon. At this moment a slight break occurred in the thick mist and he saw some movement in the vicinity of a hut. Seizing this opportunity, he rushed towards the hut and in the first burst of his sten gun killed two hostiles. A hiding hostile hurled a grenade, which narrowly missed him. He kept on advancing towards the hut and with another burst dropped one more hostile. Second Lieutenant Raman was now in an exposed position. A hiding hostile threw another grenade at him, which burst hardly a yard away. It tore his hat and injured him. His relentless and determined attack however demoralized the hostiles who took to their heels. He continued to press on and killed one more hostile. He had now cleared the position. Just then another hostile from point black range fired a burst from a sten gun, which wounded him in the groin. Second Lieutenant Raman, though very seriously wounded, threw a grenade at his attacker and wounded him. The hostile was seen dragging himself off to a nearby bush. The mist started lifting and Second Lieutenant Raman shouted to his platoon to push forward and clear the village. It was because of Second Lieutenant Raman's dashing single-handed action, which cost him his life, that the heavily prepared hostile position was cleared. His gallant action stands out as a shining example of leadership and selfless devotion to duty in the best traditions of the Army.

On 28 September 1965, during the Indo-Pak war, Lieutenant Colonel PK Nandagopal, commanding 6 SIKH LI was ordered to clear two important hill features as a preliminary operation to capture the objective of KALIDHAR in Jammu and Kashmir. Notwithstanding the ceasefire the Pakistani forces had encroached upon the Indian positions. With utter disregard for his own safety, Lieutenant Colonel PK Nandagopal led the assault personally and captured both the objectives. The Pakistanis brought down heavy artillery fire and counter attacked these positions three times. Two of the counter attacks were beaten back. Owing to heavy casualties and pressure of the enemy, the SIKH LI soldiers had to fall back from one of the hill features. This did not daunt Lieutenant Colonel PK Nandagopal. With determination and presence of mind, he halted the enemy advance and stabilized the situation. His battalion went forward and pushed the enemy out of the objective; which had been vacated earlier. The valiant SIKH LI soldiers continued to advance up a steep hill braving intense fire pressed forward and successfully secured other important features by repulsing the enemy and inflicting heavy losses. On one occasion, Lieutenant Colonel PK Nandagopal personally led the forward company and was involved in a desperate close quarter combat with the enemy. He sustained two big blows of a hatchet on his head and hand. Despite his injuries he organized his troops for the next assault and the feature was finally wrested from the Pakistani intruders. In these operations, Lieutenant Colonel PK Nandagopal displayed remarkable courage, leadership and determination. His bravery was a source of inspiration to all his men and they responded in a befitting manner.

On the night of the 2nd/3rd November 1965, Lieutenant Colonel Sant Singh was given the task of clearing an objective that had been encroached upon by Pakistani forces notwithstanding the cease fire. This was a difficult feature strongly defended by the enemy. Despite enemy mines and artillery fire, Lieutenant Colonel Sant Singh moved forward with his men, charged the enemy and after a bitter hand to hand fight, cleared the objective. Later, taking advantage of his position, Lieutenant Colonel Sant Singh moved from bunker to bunker in the face of heavy enemy artillery and automatic fire encouraging his men and cleared another objective which also had been encroached upon by Pakistani forces. Throughout the operation, Lieutenant Colonel Sant Singh displayed conspicuous gallantry and leadership of a high order.

On the night of the 2nd/3rd November 1965, Naik Darshan Singh's section was ordered to clear a bunker where Pakistani forces, had sited a Browning Machine Gun. On being told by one of his men that they had encountered a minefield, he led his men in a charge on the enemy. His left leg was blown off by a mine. He not only refused to be evacuated but continued crawling forward exhorting his men to carry on with the charge so that rest of his platoon and the company could make an assault after them. On coming to wire obstacles, he crawled forward and cut the wire. In this process another mine exploded wounding him severely. Unmindful of his wounds, he dragged himself forward to an enemy bunker and threw a grenade into it. Encouraged by his action the few remaining men of his section charged another bunker and silenced the enemy Browning Machine Gun. By this time his entire section had become casualties, but the men had paved the way for the success of their Company in the operations. Naik Darshan Singh died shouting to the follow-up echelon to come by the route, which had been cleared of mines by the charge of his section. He made the supreme sacrifice of his life for the success of his company and displayed courage and devotion to duty of the highest order in the finest traditions of the Indian Army.

During the Indo-Pak war in 1971, 8 SIKH LI was given the task of capturing Fatehpur post in Pakistan and the area surrounding the Dussi Bunds in the Amritsar sector. The objective was well fortified, heavily mined and strongly defended. The men braved a heavy concentration of Pakistani artillery fire, well-aimed small arms and automatic weapons fire and a continuous shower of grenades. Lieutenant Colonel HC Pathak personally led the battalion to its allotted objective. In the initial stages it seemed that the Pakistani forces would be able to break up the assault, but Lieutenant Colonel HC Pathak relied on his men, swept the enemy out of the area and captured the objective. The Pakistanis mounted several counter attacks but the battalion held on to its position with dogged determination and fought back the enemy counter attacks. After a gruesome battle, the battalion held on to Fatehpur and fanned out up to the River Ravi. The brilliant success of 8 SIKH LI against heavy odds was achieved mainly due to the inspiring leadership and valour displayed by Lieutenant Colonel HC Pathak and his team. During the entire operation he showed conspicuous gallantry, exemplary leadership and dedication to duty in the best traditions of the Indian Army.