Which country's longest continuous deployment began because of intense political and sectarian rioting in Northern Ireland?
Operation Banner Operation Banner was the operational name for the British Armed Forces' operation in Northern Ireland from August 1969 to July 2007, as part of the Troubles. It was the longest continuous deployment in the British military's history. The British Army was initially deployed, at the request of the unionist government of Northern Ireland, in response to the August 1969 riots. Its role was to support the Royal Ulster Constabulary (RUC) and to assert the authority of the British government in Northern Ireland. At the peak of the operation in the 1970s, about 21,000 British troops were deployed, most of them from Britain. As part of the operation, a new locally-recruited regiment was also formed: the Ulster Defence Regiment (UDR).
Provisional IRA South Armagh Brigade The South Armagh Brigade of the Provisional Irish Republican Army (IRA) operated during the Troubles in south County Armagh. It was organised into two battalions, one around Jonesborough and another around Crossmaglen. By the 1990s, the South Armagh Brigade was thought to consist of about 40 members, roughly half of them living south of the border. It has allegedly been commanded since the 1970s by Thomas 'Slab' Murphy who is also alleged to be a member of the IRA's Army Council. Compared to other brigades, the South Armagh IRA was seen as an 'independent republic' within the republican movement, retaining a battalion organizational structure and not adopting the cell structure the rest of the IRA was forced to adopt after repeated intelligence failures.