During the 1971 Indo-Pak war, Lance Naik Drig Pal Singh and the 15 Rajput Regiment participated in the battle of Fazilka. Two enemy medium machine guns located in the enemy bunkers claimed several Indian lives.

On the night of 13th December, determined to silence these guns, the Lance Naik, accompanied by two men, crawled towards the bunkers. He hurled a grenade that completely destroyed one machine gun, he was struck on the left shoulder by a burst of gun fire. He continued advancing but a second round of fire struck him on the chest, killing him instantly.

His action, however had not been in vain. The enemy was compelled to beat in vain. The enemy was compelled to beat a hasty retreat, leaving behind a large cache of arms.

Lance Naik Singh was honoured posthumously with the Mahavir Chakra.