"subversion" was considered to be a "strong support for, or membership of, organisations whose aims are incompatible with those of the udr" and attempts by soldiers to use their "knowledge, skills, or equipment to further the aims of such organisations." it speculated that "perhaps" 5–15% of udr soldiers were, or had been, directly linked to "protestant extremist groups". that the "best single source of weapons, and the only significant source of modern weapons, for these groups was the udr" and that the british government knew udr weapons were being used by loyalist paramilitaries, including the killing of a roman catholic civilian and other attacks.