Question: Which organization did both Billy McMillen and the Irish National Liberation army have affiliations with until 'the Troubles' 1974?
Sentence (from "Irish National Liberation Army"): The Irish National Liberation Army (INLA, Irish: "Arm Saoirse Náisiúnta na hÉireann" ) is an Irish republican socialist paramilitary group formed in December 1974, during "the Troubles".
Relevant evidence: Yes