12 December – The Irish Republican Army launches its Border Campaign with the bombing of a BBC relay transmitter in County Londonderry, burning of a courthouse in Magherafelt by a unit led by 18-year-old Seamus Costello and of an Ulster Special Constabulary post near Newry and blowing up of a half-built British Army barracks at Enniskillen.
On December 12th, the Irish Republican Army commenced its Border Campaign with bombings of a BBC relay transmitter in County Londonderry, burning of a courthouse in Magherafelt by a unit led by Seamus Costello, destruction of an Ulster Special Constabulary post near Newry, and demolition of a half-built British Army barracks at Enniskillen.