Ulsterisation refers to one part – "primacy of the police" – of a three-part strategy of the British government 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 duties in Northern Ireland and replace them with members of the locally-recruited Royal Ulster Constabulary (RUC) and Ulster Defence Regiment (UDR). The objective of this policy was to confine the effects of the conflict to Northern Ireland.