Under the Platoon Commander, on the night of 11/12 June 1982, a small group of men including Sergeant McKay, set out to reconnoitre enemy positions on Mount Longdon. Within in minutes the Platoon Commander was seriously wounded. Sergeant McKay decided to convert this reconnaissance into an attack in order to eliminate the enemy positions which were preventing 4 and 5 Platoons from moving forward. He took the Corporal and two men with him and broke cover.
Their assault met determined resistance. The Corporal was seriously wounded, one Private was killed and the other wounded. Alone, Sergeant McKay charged the position and destroyed it, with its occupants, an action which allowed 4 and 5 Platoons to redeploy in safety. Ian McKay was killed at the very moment of victory, his body falling on the bunker he had just immobilised.