In 1988 , three Belfast Brigade IRA members were killed in Gibraltar by the Special Air Service ( SAS ) while on a bombing mission . Their funerals were attacked by loyalist gunman Michael Stone , who killed three mourners ( the Milltown Cemetery attack ) . At the funeral of one of those killed , two plainclothes soldiers drove into the procession . They were beaten and then killed by IRA members , in an incident known as the ' corporals killings '
Milltown Cemetery attack
Milltown Cemetery attack
Provisional IRA Belfast Brigade