What is ulsterisation?

Ulsterisation

Ulsterisation refers to one part 'primacy of the police' of a three part strategy by the British Government to pacify Northern Ireland during the conflict known as The Troubles. The strategy was to disengage the non-Ulster regiments of the British Army as much as possible from security duties in Northern Ireland and replace them with members of the locally recruited Royal Ulster Constabulary and Ulster Defence Regiment. The objective of this policy was to confine the conflict to Northern Ireland.

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Some articles on ulsterisation:

Ulsterisation
... Ulsterisation refers to one part 'primacy of the police' of a three part strategy by the British Government to pacify Northern Ireland during the conflict known as The Troubles ... often controversial strategy of 'criminalisation' and 'Ulsterisation.' These policies would later be extended by Roy Mason, and would include the employment of the Special Air Service on the Irish border ... 'Ulsterisation' brought about striking changes in the casualty patterns ...
Ulster Defence Regiment - Operational Role - Ulsterisation
... Ulsterisation is a term applied to the British Government's policy to reduce regular Army troop numbers in Northern Ireland and bring local forces into the front line ... The term "Ulsterisation" was coined by the media ...