The Glenanne barracks bombing was a large truck bomb attack carried out by the Provisional IRA against a British Army (Ulster Defence Regiment) base at Glenanne, near Mountnorris, County Armagh. The driverless lorry was rolled down a hill at the rear of the barracks and crashed through the perimeter fence. The bombing took place on 31 May 1991 and left three soldiers killed and 14 people wounded, four of them civilians.