The documents in this archive span two centuries of Irish republican history and assume a working familiarity with the movement’s language, structures, and events. This glossary is designed to bridge that gap. It covers the political vocabulary of republicanism, the internal structures of the IRA and Sinn Féin, the legal and security apparatus ranged against them, and the historical events and cultural references that recur across the holdings. Entries are arranged alphabetically.

Abstentionism The policy of refusing to take seats in the parliaments of Britain, the Republic of Ireland, or the North following election. A defining principle of traditional republicanism, abstentionism held that participation in partition institutions implied their legitimacy. The abandonment of abstentionism toward Dáil Éireann by Sinn Féin in 1986 precipitated a split and the formation of Republican Sinn Féin.

Active Service Unit (ASU) A small operational cell within the IRA, typically comprising four to eight volunteers tasked with carrying out specific operations. The ASU structure, emphasising compartmentalisation, became the dominant organisational model from the late 1970s onwards following the adoption of a cell-based system designed to limit the damage caused by informers and arrests.

Adjutant The administrative officer within an IRA unit, responsible for communications, record-keeping, and liaison between the unit and higher command. The Adjutant General at GHQ level oversaw administrative functions across the organisation as a whole.

Anglo-Irish Agreement The agreement signed by the British and Irish governments at Hillsborough Castle on 15 November 1985, giving the Irish government a formal consultative role in Northern Ireland affairs through the Anglo-Irish Intergovernmental Conference. Bitterly opposed by unionists, who mounted a sustained campaign of protests and strikes against it, the Agreement was also viewed with deep suspicion by republicans as an attempt to stabilise partition. Its significance as a precursor to the peace process is documented across the republican press of the late 1980s held in this archive.

Apprentice Boys of Derry A Protestant fraternal organisation commemorating the apprentices who closed the gates of Derry against the Jacobite army in 1688, whose annual parade around the city walls has been a recurring source of tension throughout the conflict period. The Apprentice Boys’ August parade in particular, passing above the nationalist Bogside, was a flashpoint in the events of August 1969 that precipitated the deployment of British troops and the split in the republican movement. The organisation and its marches are referenced across the publications held in this archive.

Ard Chomhairle The national executive council of Sinn Féin, elected at the Ard Fheis and responsible for implementing party policy between annual conferences. Comparable in function to a board of directors, the Ard Chomhairle meets regularly throughout the year and holds authority over party affairs between plenary gatherings.

Ard Fheis The annual national conference of Sinn Féin, at which delegates from cumainn across Ireland debate and vote on motions of policy, elect the Ard Chomhairle, and set the direction of the movement. Major strategic shifts, including the abandonment of abstentionism and the acceptance of the Good Friday Agreement, were voted on at Ard Fheiseanna.

Ard Rúnaí The national secretary of Sinn Féin, a senior administrative position within the Ard Chomhairle responsible for the day-to-day running of the organisation, maintaining party records, and overseeing communications between the national leadership and cumainn across the country.

Armagh Women’s Prison The prison holding republican women prisoners, where a parallel protest to that in the Maze/Long Kesh developed from 1980. Women prisoners in Armagh mounted their own no-wash protest and participated in the first hunger strike of 1980. The Armagh protest received considerably less public and media attention than the men’s campaign but was a significant strand of the prison struggle, documented in the republican press of the period held in this archive.

Army Council The supreme governing authority of the IRA, a seven-member body elected by the General Army Convention and responsible for directing the campaign and appointing the Chief of Staff. The Army Council has the final authority over IRA strategy and ceasefire declarations.

Army Executive A twelve-member body elected by the General Army Convention, sitting between the Convention and the Army Council and responsible for electing the seven members of the Army Council. The Army Executive acts as a check on the Army Council between Conventions and can reconvene a Convention if required.

B Specials (Ulster Special Constabulary) The part-time Protestant police reserve force in the North disbanded in 1970 following the Hunt Report’s recommendations in the wake of the August 1969 violence. The B Specials were widely regarded in nationalist communities as a sectarian armed force, and their conduct during the pogroms of August 1969, including attacks on nationalist areas in Belfast, was a direct factor in accelerating the split in the republican movement and the formation of the Provisional IRA.

Ballot Box and Armalite The dual strategy articulated by Danny Morrison at the 1981 Ard Fheis, combining electoral politics with the armed campaign. Morrison’s formulation, asking whether anyone would object if republicans took power with a ballot paper in one hand and an Armalite in the other, defined the strategic direction of the Provisional movement through the 1980s and marked the beginning of Sinn Féin’s serious engagement with electoral politics.

Battalion A subdivision of an IRA brigade, itself subdividing into companies. The battalion structure was more prominent in the earlier decades of the conflict and became less significant as the cell-based ASU model was adopted through the late 1970s and 1980s.

Black and Tans The British auxiliary police recruited from 1920 to reinforce the Royal Irish Constabulary during the War of Independence, named for their improvised uniform of khaki and dark police elements. Their conduct, including reprisals against civilian populations, the burning of towns including Balbriggan and Cork, and summary killings, became a byword for British repression in Ireland and gave the republican term for the War of Independence its name. The Black and Tans are a recurring reference point in the historical documents held in this archive and their memory informed republican political language throughout the conflict period.

Blanket Protest The form of protest adopted by republican prisoners in the Maze/Long Kesh from 1976, following the withdrawal of Special Category Status. Prisoners refused to wear prison uniforms, wearing only their cell blankets instead. The blanket protest escalated into the no-wash protest and dirty protest, and ultimately the 1981 hunger strike.

Bloody Sunday 30 January 1972, when members of the British Parachute Regiment shot 26 unarmed civilians during a civil rights march in Derry, killing 14. Bloody Sunday was the single most significant event in radicalising nationalist opinion in the North and in swelling IRA recruitment. The Saville Inquiry (2010) concluded that all of those killed were innocent and that the shootings were unjustified and unjustifiable.

Border Campaign (Operation Harvest) The IRA campaign of 1956 to 1962, directed primarily at infrastructure and security installations along the border between Northern Ireland and the Republic. The campaign was called off in February 1962 following a statement acknowledging the lack of public support, particularly in the south. Its failure prompted a period of ideological reassessment within the republican movement that contributed directly to the tensions culminating in the 1969 split.

Brigade A major territorial unit within the IRA’s military structure, covering a defined geographic area and comprising a number of battalions. The Northern Command and Southern Command oversaw brigades across Ireland, with the Belfast Brigade, Derry Brigade, and East Tyrone Brigade among the most active during the conflict.

British Army Deployed to the North in August 1969 initially to protect nationalist communities from loyalist violence and widely welcomed in those communities on arrival. Within months the relationship had deteriorated sharply, accelerated by internment in 1971, Bloody Sunday in 1972, and the conduct of searches and arrests in nationalist areas. For the remainder of the conflict the British Army was perceived in republican communities as an army of occupation and was a primary target of IRA operations. Its presence, conduct, and casualties are documented across every publication held in this archive.

Brits Out The core demand of the republican movement, calling for the withdrawal of British forces and British jurisdiction from Ireland. Used as a slogan on posters, murals, and in publications throughout the conflict period, ‘Brits Out’ represents the irreducible minimum of the republican position.

Caretaker A Sinn Féin officer appointed on a temporary basis to maintain a cumann or organisational structure during a period of difficulty, absence, or rebuilding. The caretaker role reflects the movement’s emphasis on continuity of organisational structure even when active membership is depleted.

Ceasefire A suspension of IRA military operations, carrying significant political weight within the movement given the primacy of the armed campaign as republican strategy. The three major ceasefires of the conflict period, in 1972, 1975, and 1994, each represented a distinct moment of strategic reassessment. The 1994 ceasefire, announced on 31 August, led ultimately to the Good Friday Agreement and the end of the Provisional IRA’s campaign.

Chief of Staff The senior officer of the IRA, appointed by the Army Council and responsible for the day-to-day direction of the organisation and its campaign. The Chief of Staff chairs General Headquarters and oversees all departments. The position was held by a succession of figures across the conflict period, some of whom were publicly known only after arrest or death.

The Civil War (1922-1923) The conflict between pro-Treaty and anti-Treaty forces that followed the signing of the Anglo-Irish Treaty, in which the new Free State government, armed by Britain, suppressed the anti-Treaty IRA. The Civil War’s legacy, including the bitterness, executions, and the alignment of the two main parties of the Irish state along pro- and anti-Treaty lines, shaped Irish politics for the remainder of the twentieth century and the republican movement’s relationship with constitutional politics throughout the archive period.

Coiste Seasta The standing committee of the Sinn Féin Ard Chomhairle, a smaller executive body meeting more frequently than the full Ard Chomhairle to handle urgent business and day-to-day decisions between plenary meetings of the national executive.

Collusion The documented cooperation between loyalist paramilitaries and elements of the British security forces, including the RUC, Ulster Defence Regiment, and British Army intelligence, in the targeting and killing of republicans and nationalists. A persistent republican allegation for much of the conflict, collusion was substantiated by successive official inquiries including the Stevens Investigations, the Cory Reports, and the Pat Finucane case review, each of which confirmed that security force members passed information to loyalist groups.

Combined Loyalist Military Command (CLMC) The umbrella body formed in 1991 to coordinate the activities of the UDA, UVF, and Red Hand Commando. The CLMC announced the loyalist ceasefire of 13 October 1994 in response to the IRA ceasefire of August that year. The ceasefire statement, delivered by Gusty Spence, expressed abject and true remorse to the victims of loyalist violence and is one of the significant documents of the peace process period, referenced across the republican press held in this archive.

Comhairle Ceantair A district or area council within the Sinn Féin organisational structure, sitting between the national Ard Chomhairle and the local cumann. Comhairlí ceantair coordinate activity across a number of cumainn within a defined geographic area and feed into the broader party structures.

Commemoration The republican tradition of publicly marking significant anniversaries as a form of political assertion as much as remembrance. Commemorations, at gravesides, republican plots, and public venues, served to maintain organisational cohesion, assert the continuity of the republican tradition, and demonstrate public support. The Easter commemoration, the anniversaries of the hunger strike deaths, and Bloody Sunday have each generated extensive coverage in the publications held in this archive.

Comms The system of secret communications smuggled in and out of prison, used by IRA prisoners to maintain contact with the outside leadership and coordinate political and military strategy from within the jail. Comms, typically written on cigarette papers in tiny script and concealed within the body, were the primary means by which the prison leadership communicated with GHQ and Sinn Féin during the blanket protest and hunger strike period. Bobby Sands’s prison diary and the prisoners’ political communications of 1980-1981 were conveyed by this method.

Company The smallest formal unit in the IRA’s territorial structure, subordinate to a battalion. Companies operated at neighbourhood or townland level and formed the foundation of the organisation in both urban and rural areas.

Constitutional Nationalism The tradition within Irish nationalism that seeks a united Ireland exclusively through electoral, parliamentary, and diplomatic means, rejecting the use of physical force. In the northern context, constitutional nationalism is primarily associated with the Social Democratic and Labour Party (SDLP) and, in the South, with Fianna Fáil and Fine Gael. Republican documents across the archive period frequently engage with and challenge constitutional nationalism’s legitimacy and efficacy.

Criminalisation The British government policy, introduced in 1976, of treating paramilitary prisoners as ordinary criminals rather than political prisoners. Criminalisation, alongside Ulsterisation (transferring security primacy to the RUC and UDR) and normalisation, formed the three-pronged security strategy of the mid-to-late 1970s designed to present the conflict as a law-and-order problem rather than a political one.

Cuige A provincial council within the Sinn Féin organisational structure, sitting between the comhairle ceantair and the national Ard Chomhairle and coordinating republican activity across one of the four provinces of Ireland. The cuige structure reflects the movement’s all-Ireland organisational framework.

Cumann The basic organisational unit of Sinn Féin at local level, a branch or club. Cumainn are named, typically after republican figures or historical events, and form the grassroots foundation of the party structure. The plural is cumainn.

Decommissioning The process of putting IRA weapons beyond use, the central demand of the unionist parties and the British government during the peace process negotiations. Decommissioning was a source of prolonged internal republican tension, with many volunteers viewing the surrender of weapons as an unacceptable concession in the absence of a united Ireland. The IRA’s act of decommissioning in September 2005, overseen by the Independent International Commission on Decommissioning under General John de Chastelain, was confirmed as complete by the Commission.

Democratic Unionist Party (DUP) The unionist political party founded by Ian Paisley in 1971, emerging from his Protestant Unionist Party and drawing on Free Presbyterian and working-class loyalist support. The DUP opposed the Sunningdale Agreement, the Anglo-Irish Agreement, and initially the Good Friday Agreement, before entering power-sharing government with Sinn Féin in 2007 following the St Andrews Agreement. Its rise to become the largest unionist party at the expense of the Ulster Unionist Party is documented across the republican press of the period held in this archive.

Diplock Courts Non-jury courts established in the North in 1973 following the Diplock Commission report, in which a single judge tries defendants for scheduled (terrorist) offences without a jury. Introduced to prevent jury intimidation, Diplock courts became a defining feature of the criminal justice system in the North throughout the conflict and were not abolished until 2007.

Director of Publicity A senior position within Sinn Féin responsible for media strategy, public statements, and the party’s publications. The Director of Publicity was a prominent and influential role given the centrality of the propaganda war to republican strategy, and the position was held by figures including Danny Morrison during the critical years of the early 1980s.

Dirty Protest The protest in which republican prisoners in the Maze/Long Kesh refused to wash or use toilet facilities, smearing excrement on cell walls. Begun in 1978 as an escalation of the blanket protest, the dirty protest drew international attention to conditions inside the prison and the prisoners’ demand for political status.

Dumping Arms The concealment or decommissioning of weapons, carrying specific political meaning in the context of ceasefires and the peace process. The term derives from the order issued at the end of the Civil War in 1923 and recurs throughout republican history as a marker of strategic suspension rather than permanent cessation. The IRA’s act of decommissioning in 2005, overseen by General John de Chastelain, was the definitive instance in the archive period.

Easter Rising (1916) The insurrection of Easter Monday 1916 in which Irish Volunteers and the Irish Citizen Army seized key buildings in Dublin and proclaimed an Irish Republic. Suppressed within a week and its leaders executed, the Rising became the foundational event of the modern republican tradition, the source of the movement’s legitimating narrative, and the reference point against which all subsequent republican activity measures itself. Its anniversary is the central date in the republican commemorative calendar.

Economic Targets The IRA’s strategic campaign of bombing commercial and infrastructure targets in Britain and the North, aimed at making the conflict economically costly for the British government and business community. Economic targeting was a defined strand of IRA strategy from the early 1970s, intensifying with the mainland bombing campaigns of the late 1980s and 1990s. The Baltic Exchange bombing of 1992 and the Canary Wharf bombing of 1996 caused damage running to hundreds of millions of pounds and are referenced extensively in the republican and mainstream press held in this archive.

Éire Nua A federal policy document adopted by Sinn Féin in 1971, proposing a four-province federal Ireland as the basis for a republican settlement. Developed largely by Dáithí Ó Conaill and Ruairí Ó Brádaigh, Éire Nua was abandoned by the Adams leadership in 1982 and its rejection became one of the fault lines leading to the 1986 split.

The Emergency The official designation used by the Irish government for the period of the Second World War (1939-1945), reflecting Ireland’s policy of neutrality. Within the republican tradition, the Emergency is significant for the IRA’s wartime campaign and the sustained use of internment and the Special Criminal Court by the de Valera government against republican activists.

Engineer The IRA term for the specialist responsible for explosives, bomb-making, and weapons maintenance within a unit. Engineering expertise was among the most closely guarded within the movement, with experienced engineers a scarce and valued resource whose arrest or death significantly affected operational capacity.

Extradition The legal and political process by which suspects are transferred from one jurisdiction to another to face trial. The extradition of republican suspects from the South to the North or Britain was a major political issue throughout the 1980s, with the Irish courts frequently refusing extradition on the grounds that the offences were political in nature. The political offence exception and its progressive narrowing through Irish and European court decisions is documented across the republican press of the period.

Federalism Within the republican tradition, federalism refers specifically to the Éire Nua proposal for a four-province federal Irish state as an alternative to a unitary republic. Distinct from the broader political science usage, the term in this context marks a particular strategic tendency associated with the southern-based traditional republican leadership of the 1970s and 1980s.

Five Demands The five specific demands of the republican prisoners during the 1981 hunger strike: the right to wear their own clothes rather than a prison uniform; the right to refrain from prison work; the right to associate freely with other republican prisoners; the right to one parcel, one letter, and one visit per week; and the restoration of remission lost during the protest. The British government’s refusal to concede the five demands, which it characterised as a restoration of political status, was the direct cause of the hunger strike in which ten men died.

Flying Column A mobile guerrilla unit operating independently across a wide area, originating in the War of Independence period when columns such as Tom Barry’s West Cork Brigade conducted hit-and-run engagements against Crown forces. The flying column is invoked throughout republican tradition as a model of effective irregular warfare and its memory informed IRA tactical thinking across the conflict period.

Force Research Unit (FRU) The British Army intelligence unit responsible for running agents within paramilitary organisations in the North, at the centre of the most serious collusion allegations of the conflict period. The FRU handled agent Brian Nelson within the UDA, who used intelligence supplied by the unit to target republicans and nationalists for assassination. The Stevens Investigations and the subsequent inquiry into the murder of solicitor Pat Finucane established the FRU’s role in facilitating loyalist killings and are extensively documented in the republican press held in this archive.

Garda Síochána The police force of the South, whose relationship with the republican movement ranged from active suppression to tacit tolerance across the conflict period. The Gardaí enforced the Offences Against the State Act, operated internment in the South, and maintained surveillance of republican activity south of the border, while the degree of operational cooperation with the RUC in the north was a recurring political question. The force appears throughout the documents in this archive in the context of arrests, raids, and the broader southern state response to the conflict.

Gardaí Special Branch The intelligence and security division of the Garda Síochána, known colloquially as the Branch, responsible for monitoring and suppressing republican activity in the South. Special Branch maintained files on republican activists, conducted surveillance operations, and coordinated with British intelligence on matters relating to the IRA’s activities and movements across the border. Its operations are referenced across the republican press held in this archive.

General Army Convention (GAC) The supreme authority of the IRA in theory, composed of elected delegates from across the organisation and convened to determine major matters of policy and elect the Army Council. Conventions are infrequent and their proceedings secret; the most significant in the archive period were those of 1969 (which produced the split), 1986, and 1997.

General Headquarters (GHQ) The executive command structure of the IRA, headed by the Chief of Staff and responsible for directing and coordinating military operations across all units. GHQ departments covered areas including engineering, intelligence, finance, and publicity.

Gerrymandering The manipulation of electoral boundaries in the North to ensure unionist majorities in local government areas regardless of the underlying population balance. Gerrymandering, alongside the property franchise and other discriminatory practices, was a central grievance of the civil rights movement of 1968-1969 and is documented in the earliest publications held in this archive. Derry city, where a nationalist majority consistently returned a unionist-controlled council, was the most prominent example.

Good Friday Agreement The multi-party agreement signed on 10 April 1998, ending the conflict and establishing new political institutions including the Northern Ireland Assembly, a North-South Ministerial Council, and a British-Irish Council. The Agreement’s acceptance by Sinn Féin, endorsed by a special Ard Fheis in May 1998, was among the most contested decisions in the modern republican movement, with dissidents arguing it copper-fastened partition. Its terms and the republican debate surrounding it are documented in publications held in this archive.

Graves and Memorials The physical landscape of republican commemoration: the republican plot in Glasnevin Cemetery, plots in Milltown, Deansgrange, and Derry, roadside memorials to volunteers killed on active service, and plaques and monuments in nationalist communities. The graveside oration is a distinct republican tradition in which political statements are delivered at burials and commemorations, functioning as a form of public political address with its own conventions and significance.

Green Book The training and ideological manual issued to IRA recruits, setting out the movement’s political philosophy, the rules governing volunteers, and the legal rights of those arrested. The Green Book emphasised the volunteer’s right to silence under interrogation and outlined the historical and political justification for the armed campaign. It existed in various versions across the conflict period and was not publicly available, though copies entered circulation through court proceedings and journalism.

The H-Blocks The cellular prison units at the Maze/Long Kesh, constructed in the shape of the letter H and opened from 1976 to house prisoners convicted after the ending of Special Category Status. The H-Blocks became synonymous with the blanket protest, dirty protest, and 1981 hunger strike, and their name appears throughout the republican press of the period as shorthand for the entire prison protest campaign.

Hunger Strike A form of protest with deep roots in Irish political and legal tradition, involving the refusal of food as a means of compelling action from an adversary. Used by republican prisoners at various points across the twentieth century, most notably by Terence MacSwiney in 1920 and by prisoners in the Maze/Long Kesh and Armagh in 1980 and 1981. The 1981 hunger strike, in which ten men died, was the most consequential single event in the history of the modern republican movement.

Intelligence Officer The officer within an IRA unit responsible for gathering information on potential targets, security force movements, and the identification of informers within the movement. The Director of Intelligence at GHQ level oversaw the organisation’s intelligence operations. British and loyalist intelligence penetration of IRA intelligence structures was a defining feature of the later conflict period.

Internment Detention without trial under emergency legislation. Internment was used in Ireland at various points across the twentieth century, most notoriously from August 1971 in the North, when Operation Demetrius saw the arrest of 342 men. The exclusively nationalist and republican composition of those interned, and the use of interrogation techniques subsequently ruled inhuman and degrading, radicalised large sections of the northern nationalist community.

Long Kesh The original name of the prison complex outside Lisburn in County Antrim, established on a former RAF base in 1971 initially as an internment camp. As the H-Block cellular units were constructed from 1976, Long Kesh and the Maze became effectively synonymous, though republicans consistently used Long Kesh in preference to the Maze, the official designation, as a refusal to accept the rebranding that accompanied the criminalisation policy. The name appears throughout the republican press of the period held in this archive.

The Long War The IRA’s strategic framework, articulated from the late 1970s onwards, premised on the assumption that the conflict would continue for a sustained period and that military pressure needed to be combined with political development, the ‘Armalite and ballot box’ strategy, rather than seeking a short-term military victory.

Loyalism The Ulster Protestant political tradition committed to maintaining the union with Britain, distinguished from unionism by its association with working-class communities and its historical willingness to use or condone political violence in defence of the union. Loyalist paramilitary organisations including the Ulster Volunteer Force and Ulster Defence Association operated throughout the conflict period, and loyalism as a political force is a recurring presence in the republican publications held in this archive.

Loyalist Volunteer Force (LVF) A breakaway loyalist paramilitary group formed in 1996 by Billy Wright following his expulsion from the UVF mid-Ulster brigade, founded in opposition to the peace process and responsible for a number of killings during the period. Wright’s murder inside the Maze Prison in December 1997, carried out by the INLA, was one of the most significant incidents of the late conflict period and generated extensive coverage in the republican press held in this archive.

MI5 / British Intelligence The British Security Service (MI5) and associated intelligence agencies, including the Secret Intelligence Service (MI6), Military Intelligence, and the Force Research Unit, whose operations against the republican movement ranged from agent running and infiltration to directing loyalist paramilitaries through handlers. The extent of British intelligence penetration of the IRA, and the role of state agents in directing or facilitating loyalist violence, became a major political issue in the later conflict period and is documented across the republican press held in this archive. The Stevens Investigations and subsequent inquiries confirmed that intelligence operatives were involved in the passing of information to loyalist groups responsible for killings.

Nationalist The broad term covering all those who seek Irish unity, encompassing both the republican tradition and constitutional nationalism. In the political vocabulary of the conflict period, nationalist is generally used to denote the wider community of those seeking a united Ireland, as distinct from republican, which implies support for or sympathy with the physical force tradition, and appears frequently in the documents held in this archive in the context of community relations, electoral politics, and the broader nationalist response to events.

No-Wash Protest An intermediate stage in the prison protest campaign, in which prisoners refused to wash or leave their cells to use toilet facilities. The no-wash protest preceded and merged into the dirty protest as conditions in the cells deteriorated.

Normalisation The third prong of the British security strategy of the mid-to-late 1970s, alongside criminalisation and Ulsterisation. Normalisation sought to present the North as an ordinary society operating under the rule of law, minimising the visible military presence and emphasising policing and criminal justice as the primary response to political violence. The strategy directly informed the withdrawal of Special Category Status and the prison protest that followed.

Northern Command The operational command structure overseeing IRA units across the six counties in the North and the border counties in the South, established in 1977 as part of the reorganisation that introduced the cell-based ASU structure. Northern Command assumed primary responsibility for the campaign given that the conflict was concentrated in the north, and its leadership carried significant weight within the broader movement.

Occupied Six Counties The republican term for Northern Ireland, rejecting its legitimacy as a political entity and asserting it as a temporarily occupied portion of the Irish national territory. The term appears throughout the republican press held in this archive as the standard republican designation, in deliberate contrast to ‘Northern Ireland’, ‘Ulster’, or ‘the north’, each of which carries different political implications.

Offences Against the State Act (1939) The primary piece of Irish emergency legislation used against republicans in the South, providing for the Special Criminal Court, internment, and a range of offences relating to membership of unlawful organisations. The Act was invoked repeatedly throughout the conflict and remains in force in amended form.

Officer Commanding (O/C) The commanding officer of an IRA unit at any level: company, battalion, brigade, or command. The O/C is responsible for the operations and discipline of volunteers under their command.

Óglach Irish: a soldier or volunteer, the singular of Óglaigh. The term appears on headstones, memorials, and in republican publications as a title of honour for a deceased volunteer, typically preceding the name on a grave inscription or Roll of Honour entry. Its use asserts the political and military status of the dead and places them within the continuous tradition of Irish republican soldiery stretching back to the Volunteers of 1913 and 1916.

Oglaigh na hEireann Irish: Volunteers of Ireland. The formal Irish-language title of the IRA, used in official republican communications and on headstones and memorials throughout this archive. The title is contested: the Irish Defence Forces use the same designation, a source of ongoing symbolic conflict between the two organisations and their respective traditions of legitimacy.

On the Run (OTR) The status of a volunteer evading arrest by the RUC, Garda Síochána, or British Army, typically moving between safe houses across Ireland or living under assumed identities abroad. The OTR issue became a significant political controversy in the 2010s following revelations that comfort letters had been issued to named individuals by the British government as part of the peace process.

Orange Order The Protestant fraternal organisation founded in 1795, whose annual marching season has been a recurring flashpoint throughout the conflict period and beyond. Orange marches through or near nationalist areas generated sustained community tension, with the dispute at Drumcree in Portadown from 1995 onwards becoming one of the most prolonged and bitter standoffs of the peace process period. The Orange Order’s relationship with the Ulster Unionist Party and its role in unionist political culture is documented across the publications held in this archive.

Parachute Regiment The British Army regiment responsible for Bloody Sunday on 30 January 1972, when members of the First Battalion shot 26 unarmed civilians in Derry, killing 14. The Parachute Regiment was also responsible for killings in Ballymurphy in August 1971 and operated in a number of other incidents across the conflict period. Its actions are among the most extensively documented in the republican press held in this archive, and the regiment’s name became synonymous in nationalist communities with state violence and impunity.

Partition The division of Ireland into two jurisdictions effected by the Government of Ireland Act 1920 and consolidated by the Anglo-Irish Treaty of 1921, establishing Northern Ireland as a separate entity within the United Kingdom and the Irish Free State as a self-governing dominion. The ending of partition and the reunification of Ireland is the foundational political objective of the republican movement and the recurring subject of every publication, statement, and document held in this archive.

Peace Process The negotiations and political developments from the late 1980s through the Good Friday Agreement and its implementation, encompassing the back-channel communications between the IRA and the British government, the Hume-Adams talks, the Downing Street Declaration of 1993, the 1994 ceasefire, the Mitchell Principles, and the negotiations at Stormont in 1997-1998. The peace process generated extensive documentation in the republican press as the movement debated its direction, much of which is held in this archive.

Physical Force Tradition The strand of Irish republicanism holding that British rule in Ireland can only be ended through armed resistance. Tracing its lineage through Wolfe Tone, the United Irishmen, the Fenians, the IRB, the IRA, and successive generations of republican organisations, the physical force tradition stands in historical tension with constitutional nationalism, which seeks change exclusively through electoral and parliamentary means.

Poblacht na hÉireann The Proclamation of the Irish Republic, read by Pádraig Pearse outside the General Post Office in Dublin on Easter Monday 1916. The Proclamation is the founding document of the republican tradition, asserting the right of the Irish people to national self-determination and the establishment of a sovereign independent state. Its language, asserting the Irish Republic as a sovereign state with equal rights and equal opportunities for all citizens, is invoked throughout the documents held in this archive as the standard against which republican legitimacy is measured.

Political Status / Special Category Status The designation granted to paramilitary prisoners in the North from 1972 following a hunger strike by Billy McKee, allowing prisoners to wear their own clothes, refrain from prison work, receive extra visits and parcels, and associate freely with other prisoners. Its withdrawal from those convicted after 1 March 1976, the criminalisation policy, was the direct cause of the blanket protest.

Prevention of Terrorism Act (PTA) British legislation first enacted in 1974 in the immediate aftermath of the Birmingham pub bombings, providing for the exclusion and detention of terrorism suspects. The PTA allowed for detention without charge for up to seven days and was used extensively against Irish people in Britain, including many with no connection to paramilitary activity.

Prisoner of War (POW) The designation republicans applied to imprisoned volunteers, asserting political rather than criminal status and invoking the Geneva Convention framework as the appropriate standard for their treatment. The POW designation was central to the prison protests of the late 1970s and the 1981 hunger strike, and appears throughout the republican press of the period held in this archive.

Proclamation Shorthand for the Proclamation of the Irish Republic read by Pádraig Pearse outside the GPO on Easter Monday 1916. Used throughout republican discourse as the founding document of legitimate Irish statehood, the Proclamation is invoked in republican publications, speeches, and statements as the standard against which the movement’s objectives are measured and the authority from which the right to armed resistance is derived.

Progressive Unionist Party (PUP) The political party associated with the Ulster Volunteer Force, led for much of the peace process period by David Ervine. The PUP participated in the multi-party talks that produced the Good Friday Agreement and supported the Agreement within the loyalist community. Its combination of working-class politics and loyalist paramilitary association made it a distinctive presence in the political landscape of the period documented in this archive.

Proscription The legal prohibition of an organisation, making membership a criminal offence. The IRA was proscribed in the South under the Offences Against the State Act and in Britain and the North under successive pieces of emergency legislation. Proscription and its periodic removal or revision is a recurring subject in the documents held in this archive.

Quartermaster The officer within an IRA unit responsible for the procurement, storage, and distribution of weapons, explosives, and materiel. The Quartermaster General at GHQ level oversaw the movement’s overall supply operation.

The Ra Colloquial republican term for the IRA, used in speech and occasionally in print within nationalist communities throughout the conflict period. The usage reflects the degree to which the IRA was woven into the social fabric of republican areas, a familiar, communal presence rather than a distant abstraction. The term appears in oral testimony, memoirs, and informal republican writing, and its use is a marker of community proximity to the movement.

Red Hand Commando A small loyalist paramilitary group founded in 1972, closely associated with the Ulster Volunteer Force and proscribed alongside it. The Red Hand Commando carried out a number of killings during the conflict and participated in the Combined Loyalist Military Command ceasefire of 1994. It is referenced in the republican press of the period in the context of loyalist violence against the nationalist community.

Repatriation The campaign to have republican prisoners held in jails in England and Scotland transferred to prisons in Ireland, allowing them to be closer to their families. The repatriation demand ran throughout the conflict period and beyond, with prisoners held in Wormwood Scrubs, Brixton, Portlaoise, and other English prisons subject to campaigns for their return. The issue is documented extensively in the republican press held in this archive.

Republican Movement The collective term for Sinn Féin and the IRA understood as a single political and military entity sharing leadership, strategy, and objectives. Used throughout the documents in this archive to denote the broader coalition rather than either organisation alone, the term reflects the reality of a movement in which the distinction between political and military wings was often more formal than functional.

Royal Irish Constabulary (RIC) The armed police force that policed Ireland under British rule until its disbandment in 1922, replaced in the Irish Free State by the Garda Síochána and in the North by the Royal Ulster Constabulary. The RIC is relevant to the pre-partition period covered by the earlier documents in this archive, particularly in relation to the War of Independence during which it was a primary target of IRA operations. Its members who resigned during the conflict were known as the Tan War veterans.

RUC (Royal Ulster Constabulary) The police force of Northern Ireland from 1922 until its disbandment and replacement by the Police Service of Northern Ireland (PSNI) in 2001, following recommendations of the Patten Commission. The RUC was the primary law enforcement adversary of the IRA throughout the conflict and a central target of republican operations. Widely regarded in nationalist communities as a sectarian and partisan force, its composition was overwhelmingly Protestant throughout the conflict period. The RUC is a pervasive presence across the newspapers, pamphlets, and documents held in this archive.

RUC Special Branch The intelligence division of the Royal Ulster Constabulary, responsible for the running of informers within republican and loyalist organisations, the management of the supergrass system, and the coordination of intelligence operations across the conflict period. RUC Special Branch worked alongside British Army intelligence and MI5 and was at the centre of the most serious collusion allegations, including the passing of information to loyalist paramilitaries. Its operations are a recurring subject in the republican press held in this archive.

Safe House A premises used by the IRA for meetings, the concealment of volunteers on the run, or the storage of weapons and materials. Safe houses were provided by republican sympathisers and their identification by security forces, often through informers, was a recurring feature of the conflict documented across the newspapers and pamphlets held in this archive.

Saoirse Irish: freedom or liberty. Appearing frequently in republican publications, slogans, and organisational names across the period covered by this archive, saoirse carries a weight beyond its literal meaning, denoting the full realisation of national self-determination rather than merely the absence of constraint. The word appears in the titles of several republican periodicals and is a recurring term in the documents held here.

SAS (Special Air Service) The British Army special forces regiment deployed covertly in the North throughout the conflict, responsible for a number of killings of IRA volunteers including the ambush at Loughgall in 1987 in which eight IRA members and a civilian were killed, and Operation Flavius in Gibraltar in 1988 in which three unarmed IRA volunteers were shot dead. The SAS’s role in the conflict, and the circumstances of the killings it carried out, were a persistent focus of republican press coverage and are documented extensively in the publications held in this archive.

SDLP (Social Democratic and Labour Party) The main constitutional nationalist party in the North throughout the conflict, founded in 1970 and led for much of the period by John Hume. The SDLP represented the constitutional nationalist alternative to Sinn Féin within the northern nationalist community, rejecting violence and pursuing Irish unity through political and diplomatic means. The electoral competition between Sinn Féin and the SDLP for the nationalist vote, intensified from 1982 onwards as Sinn Féin developed its electoral strategy, is a recurring theme in the republican publications held in this archive, which consistently characterised the SDLP as ineffectual and as providing nationalist cover for British policy.

Section 31 Section 31 of the Irish Broadcasting Act 1960, as amended, which empowered the government to issue directions to RTÉ prohibiting the broadcasting of material likely to promote or incite crime or tend to undermine the authority of the state. From 1971, ministerial orders under Section 31 effectively banned spokespersons for Sinn Féin and the IRA from Irish radio and television. The orders were not renewed in 1994.

Shoot to Kill The alleged British security force policy of targeting republican suspects for death rather than arrest, associated particularly with a series of RUC operations in County Armagh in 1982 in which six unarmed men were killed. The policy was investigated by Greater Manchester Police Deputy Chief Constable John Stalker, whose inquiry was controversially suspended in 1986. The Stalker affair and the shoot-to-kill allegations are extensively documented in the republican press held in this archive.

Sleeper A volunteer or agent embedded in civilian life with no active operational role, activated only when required for a specific task. The sleeper concept was employed both by the IRA, in placing volunteers in target locations over extended periods, and by British intelligence, in running long-term agents within republican communities.

Southern Command The operational command structure overseeing IRA units in the South, counterpart to Northern Command. Southern Command was responsible for logistics, training, and the maintenance of the IRA’s rear base in the south, as well as operations within the south itself.

Special Criminal Court A non-jury court in the South, established under the Offences Against the State Act 1939, in which three judges sit without a jury to try offences certified by the Director of Public Prosecutions as appropriate for the court. Used extensively for republican cases throughout the conflict period.

The Split (1969) The division of the republican movement at the end of 1969 and beginning of 1970 into the Provisional IRA and Sinn Féin on one side and the Official IRA and Sinn Féin on the other. The split arose from longstanding tensions over the leftward political direction of the leadership under Cathal Goulding, the decision to consider ending abstentionism, and the perceived failure to defend nationalist areas in Belfast during the August 1969 pogroms. The Provisional movement, drawing heavily on traditional republican sentiment and the northern experience, became the dominant force in the conflict that followed.

Stormont The parliamentary buildings on the Stormont Estate in east Belfast, seat of the Northern Ireland parliament from 1932 and, following its prorogation in 1972 and subsequent devolution settlements, the Northern Ireland Assembly. Used throughout the conflict period as shorthand for the unionist administration of the north and later for the power-sharing institutions established under the Good Friday Agreement. The term appears across the publications in this archive as a marker of the political structures republicans sought to dismantle or, later, to engage with.

Sunningdale Agreement The 1973 agreement establishing a power-sharing executive in Northern Ireland and a Council of Ireland with cross-border dimensions, signed by the British and Irish governments and the Ulster Unionist Party, SDLP, and Alliance Party. The Agreement collapsed in May 1974 following the Ulster Workers’ Council strike, which brought down the executive after fourteen days. Its failure reinforced republican arguments that unionist veto power made internal settlement impossible and is referenced across the publications of the mid-1970s held in this archive.

Supergrass An informer or accomplice turned state’s witness who gives evidence against a large number of former associates in return for immunity or reduced sentence. The supergrass system was used extensively in the North in the early 1980s, with figures such as Christopher Black and Raymond Gilmour giving evidence that led to mass trials. Most convictions were subsequently overturned on appeal.

The Tan War The Irish Republican term for the War of Independence (1919-1921), named for the Black and Tans, the British auxiliary police force deployed in Ireland during the conflict. The term is preferred within the republican tradition over ‘War of Independence’ as it foregrounds British aggression rather than framing the conflict as primarily a nationalist struggle for self-determination.

Teachta Dála (TD) A member of Dáil Éireann, the lower house of the Irish parliament. The term is used in the republican context primarily in relation to the abstentionism debate, specifically whether elected republican TDs should take their seats, and in tracking the electoral fortunes of Sinn Féin in the South across the late twentieth century.

Third Force A loyalist paramilitary grouping associated with Ian Paisley and the Democratic Unionist Party, mobilised in 1981 and 1982 in response to the Anglo-Irish dimension of the period and in opposition to what Paisley characterised as the inadequate security response to the IRA. The Third Force held a series of public demonstrations, with armed men parading on hillsides in County Antrim and County Armagh, and is referenced in the republican press of the period as an example of loyalist militarism tolerated by the British state.

Tiocfaidh ár lá Irish: ‘Our day will come.’ The most widely used republican slogan of the conflict period, expressing confidence in the ultimate achievement of a united Ireland. Used as a rallying cry, a farewell, and a political statement, the phrase became ubiquitous in republican culture from the 1970s onwards.

Tout Republican slang for an informer or police spy within the movement. The penetration of republican organisations by informers was a persistent feature of the conflict and a recurring subject in the documents held in this archive, from internal IRA statements to contemporary newspaper reporting.

The Treaty (1921) The Anglo-Irish Treaty signed in December 1921 between British government representatives and Irish plenipotentiaries including Michael Collins and Arthur Griffith, ending the War of Independence and establishing the Irish Free State as a self-governing dominion within the British Empire. The Treaty’s acceptance of partition and the requirement of an oath of allegiance to the Crown split the republican movement, precipitated the Civil War, and defined the fault line in Irish nationalism that persisted throughout the twentieth century.

The Troubles The commonly used designation for the conflict in the North from approximately 1968 to 1998. The term is contested: critics argue it understates the scale and nature of the conflict, while others prefer ‘the war’ or ‘the long war’. Used throughout the documents in this archive as the standard shorthand, particularly in media coverage.

Uachtarán President. In the republican movement, the term refers to the president of Sinn Féin, the elected head of the party. Uachtaráin across the period covered by this archive include Tomás Mac Giolla, Ruairí Ó Brádaigh and Gerry Adams.

UDR (Ulster Defence Regiment) The locally recruited British Army regiment established in 1970 to replace the disbanded B Specials, subsequently merged with the Royal Irish Rangers in 1992 to form the Royal Irish Regiment. Like the B Specials, the UDR was overwhelmingly Protestant in composition and widely regarded in nationalist communities as a sectarian force. A number of UDR members were convicted of serious offences against nationalists, and the regiment’s links to loyalist paramilitaries were a persistent republican allegation substantiated in part by subsequent inquiries.

Ulster Defence Association (UDA) The largest loyalist paramilitary organisation in the North, founded in 1971 as an umbrella body for loyalist defence associations across Belfast and beyond. The UDA carried out attacks under the cover name Ulster Freedom Fighters (UFF) and was not proscribed in Britain until 1992, despite being responsible for numerous killings throughout the conflict. Its activities, feuds, and political wing the Ulster Political Research Group are documented across the republican press held in this archive.

Ulster Freedom Fighters (UFF) The cover name used by the Ulster Defence Association when claiming responsibility for killings, adopted to circumvent the UDA’s legal status in Britain during the period before its proscription in 1992. The UFF designation allowed the UDA to continue operating as a legal organisation while conducting a campaign of assassinations against republicans and nationalists, many of whom are commemorated in the documents held in this archive.

Ulster Political Research Group (UPRG) The political wing of the Ulster Defence Association, established to develop a political analysis and policy platform alongside the UDA’s paramilitary activities. The UPRG produced a number of position papers during the peace process period and engaged in community and political work in loyalist areas, representing the UDA’s attempt to develop a political voice comparable to Sinn Féin’s relationship with the IRA.

Ulster Resistance A loyalist paramilitary organisation established in 1986 in opposition to the Anglo-Irish Agreement, with links to the Democratic Unionist Party and Ulster Unionist Party at its foundation. Ulster Resistance was involved in the importation of a large consignment of weapons from South Africa in 1988, a portion of which was shared with the UDA and UVF. It is referenced in the republican press of the late 1980s held in this archive in the context of loyalist rearmament.

Ulster Unionist Party (UUP) The dominant unionist political party in the North from partition until the early 2000s, when it was overtaken by the DUP. The UUP governed the North uninterruptedly from 1921 to 1972 and participated in the Sunningdale Agreement and the Good Friday Agreement negotiations. Its decline following the Agreement and the rise of the DUP is a recurring theme in the republican political commentary of the period documented in this archive.

Ulster Vanguard A loyalist political movement established by William Craig in 1972 in opposition to the prorogation of Stormont, drawing together a range of unionist and loyalist tendencies including paramilitary elements. Vanguard held a series of mass rallies and Craig made statements suggesting the possibility of using force against a united Ireland settlement. The movement evolved into the Vanguard Unionist Progressive Party before fragmenting in the mid-1970s. It is referenced in the republican press of the early 1970s held in this archive as an example of the organised loyalist opposition to political change.

Ulster Volunteer Force (UVF) A loyalist paramilitary organisation founded in 1966, taking its name from the original Ulster Volunteer Force of 1912. The UVF carried out its first killings in 1966 and operated throughout the conflict, responsible for a significant number of deaths including the Dublin and Monaghan bombings of 1974. Proscribed and unproscribed at various points, the UVF declared a ceasefire in 1994 and announced the putting beyond use of its weapons in 2009. Its activities are documented extensively in the republican press held in this archive.

Ulster Workers’ Council (UWC) The loyalist body that organised the general strike of May 1974 which brought down the Sunningdale power-sharing executive after fourteen days. The UWC strike, combining loyalist paramilitary intimidation with the withdrawal of essential services, demonstrated the capacity of loyalist opposition to veto political agreements and reinforced republican arguments that internal settlements acceptable to unionism were impossible. It is referenced across the publications of the mid-1970s held in this archive.

Ulsterisation The policy, introduced alongside criminalisation and normalisation from the mid-1970s, of transferring the primary security role in the North from the British Army to the Royal Ulster Constabulary and the Ulster Defence Regiment. Ulsterisation was designed to reduce British Army casualties and the political costs associated with them, presenting the conflict as an internal policing matter rather than a colonial one.

Unionism The political tradition in the North committed to maintaining the union with Great Britain, drawing on the Protestant and settler heritage of the Ulster population and the constitutional arrangements of 1800 and 1921. Unionism encompasses a range of parties and tendencies from the Ulster Unionist Party through the Democratic Unionist Party and beyond, and is distinguished from loyalism by its general commitment to constitutional rather than paramilitary means. The unionist political tradition is a constant presence in the republican documents held in this archive, variously characterised as an obstacle to national self-determination and as a community to be won over.

Volunteer The standard term for a member of the IRA, reflecting the tradition of unpaid, conscience-driven service to the republican cause. The term carries deliberate historical weight, connecting modern members to the Volunteer tradition of 1913 and 1916.