Paramilitary private armies such as the Provisional Irish Republican Army, resulted from a split within the IRA, the Official IRA and Irish National Liberation Army fought against the Ulster Defence Regiment and the Ulster Volunteer Force. Moreover, the British army and the (largely Protestant) Royal Ulster Constabulary (RUC) also took part in the chaos that resulted in the deaths of over 3,000 men, women and children, civilians and military. Most of the violence took place in Northern Ireland, but some also spread to England and across the Irish border.