Question: Which organization did both Billy McMillen and the Irish National Liberation army have affiliations with until 'the Troubles' 1974?

Context paragraphs:
Dirty protest: The dirty protest (also called the no wash protest) was part of a five-year protest during the Troubles by Provisional Irish Republican Army (IRA) and Irish National Liberation Army (INLA) prisoners held in the Maze Prison (also known as "Long Kesh") and a protest at Armagh Women's Prison in Northern Ireland.

People's Liberation Army of Macedonia: The People's Liberation Army of Macedonia (Macedonian: Народноослободителна Војска на Македонија , transliterated: "Narodnoosloboditelna Vojska na Makedonija", NOV), often referred to as the Macedonian People's Liberation Army and the National Liberation Army of Macedonia, was a Communist resistance army formed in present-day Republic of Macedonia during the People's Liberation War of Macedonia in the Second World War.  The term is also used to denote the participation of Macedonians in the Yugoslav Partisans as well as other Communist resistance organisations operating in Macedonia during the Second World War.  The movement's full official name was People's Liberation Army and Partisan Detachments of Yugoslavia, (NOV i POЈ) (Serbo-Croatian: Narodnooslobodilačka vojska i partizanski odredi Jugoslavije; Slovene: Narodnoosvobodilna vojska in partizanski odredi Jugoslavije; Macedonian: Народноослободителна војска и партизански одреди на Југославија).

Christopher &quot;Crip&quot; McWilliams: Christopher "Crip" McWilliams (15 December 1963 – 28 June 2008) was a member of both the Irish People's Liberation Organisation (IPLO) and the Irish National Liberation Army (INLA) during the Troubles in Northern Ireland.  He was convicted of the murder of Loyalist Volunteer Force (LVF) leader Billy Wright, who was shot by an INLA unit led by McWilliams inside the Maze Prison.

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".  It seeks to remove Northern Ireland from the United Kingdom and create a socialist republic encompassing all of Ireland.  It is the paramilitary wing of the Irish Republican Socialist Party (IRSP).

Billy McMillen: Liam "Billy" McMillen (19 May 1927 – 28 April 1975) was an Irish republican activist and an officer of the Official Irish Republican Army (OIRA) from Belfast, Northern Ireland.  He was killed in 1975, in a feud with the Irish National Liberation Army (INLA), which had broken away from the OIRA.

The Troubles in Maghera: During the Troubles in Northern Ireland, a total of 14 people were killed in Troubles-related violence in or near the village of Maghera, County Londonderry.  Of the 13 from Northern Ireland, 11 were Protestant and two were Catholic.  Seven of the Protestant victims were members of the security forces (six Ulster Defence Regiment (UDR), two Royal Ulster Constabulary (RUC), one British Army) and another was the ten-year-old daughter of a UDR man, killed along with her father by a bomb planted in his car.  Another victim was shot after being mistaken for his co-worker, an UDR member.  Only three of the security force victims were killed while on-duty.  Both the RUC men were killed by the Irish National Liberation Army; all the other Protestant victims were killed by the Provisional Irish Republican Army.  Both the Catholic victims were killed by loyalist paramilitaries, one by the Ulster Volunteer Force and one by the Loyalist Volunteer Force.  One was a Sinn Féin councillor.

Easter Lily (badge): The Easter Lily (Irish: "Lile na Cásca" ) is a badge in the shape of a calla lily flower, worn at Easter by Irish republicans as symbol of remembrance for Irish republican combatants who died during or were executed after the 1916 Easter Rising.  Depending on the political affiliations of the bearer, it can also commemorate members of the pre-Treaty Irish Republican Army, the post-Treaty Irish Republican Army, and either the Provisional IRA or the Official IRA.  It may also be used to commemorate members of the Irish National Liberation Army.

South Armagh Republican Action Force: The South Armagh Republican Action Force was an alleged Irish republican paramilitary group that was active from September 1975 to April 1977 during the Troubles in Northern Ireland.  Its area of activity was mainly the southern part of County Armagh.  According to writers such as Ed Moloney and Richard English, it was a covername used by some members of the Provisional IRA South Armagh Brigade.  The journalist Jack Holland, however, alleged that the group was made up of members of the Irish National Liberation Army (INLA).  According to Malcolm Sutton's database at CAIN, it was responsible for 24 deaths during the conflict, all of whom were classified as civilians.

Blanket protest: The blanket protest was part of a five-year protest during the Troubles by Provisional Irish Republican Army (IRA) and Irish National Liberation Army (INLA) prisoners held in the Maze prison (also known as "Long Kesh") in Northern Ireland.  The republican prisoners' status as political prisoners, known as Special Category Status, had begun to be phased out in 1976.  Among other things, this meant that they would now be required to wear prison uniforms like ordinary convicts.  The prisoners refused to accept that they had been administratively designated as ordinary criminals, and refused to wear the prison uniform.

Johnnie White: John (Johnnie) White (died 2007) was a high-ranking staff officer of the Official Irish Republican Army (Official IRA) in Derry, Northern Ireland and later Adjutant General of the Irish National Liberation Army (INLA).  He was a key figure in Derry in the early years of the Troubles, and played a prominent role in the events surrounding the creation and defence of Free Derry.

Supporting paragraphs: Billy McMillen Irish National Liberation Army
Answer: Official Irish Republican Army