pira became and remained the priority for the udr, although threats to life and property also existed from other extremist organisations. the official irish republican army (oira) (the remnants of the "old ira") continued to commit acts of violence as did the irish national liberation army (inla), another offshoot from the "old ira". threats to the public peace also came from loyalist organisations such as the ulster volunteer force (uvf), the ulster defence association (uda) which used the "nom de guerre" ulster freedom fighters when killing, and a selection of other groupings who emerged during the troubles. as the pira campaign continued throughout the 1970s and 1980s, it and other groups increasingly targeted ulster defence regiment soldiers as well as others from the forces of law and order."