the Ulster Defence Regiment
/ði ˌʌlstə dɪˈfens redʒɪmənt/
/ði ˌʌlstər dɪˈfens redʒɪmənt/
(abbreviation the UDR)
- a branch of the British Army operating in Northern Ireland. It was formed in 1970 to help to control the violence there. In 1992 it became a part of the Royal Irish Regiment.