This is a chronological list of armed conflicts involving Ireland and the United Kingdom. Both sides have fought a total of 15 armed conflicts against each other, with 1 of them being an Irish victory, 12 of them being a British victory, 1 having another result and 1 being an internal conflict (civil war).
| Date | Conflict | Irish side | British side | Result |
|---|---|---|---|---|
| 1919-1921 | Irish War of Independence [14] |  Irish Republic |  United Kingdom | Irish victory
|
| 1922-1923 | Irish Civil War [15] | Anti-Treaty IRA | Irish Free State | Pro-Treaty forces victory
|
The Troubles were an ethno-nationalist conflict in Northern Ireland that lasted for about 30 years from the late 1960s to 1998. Also known internationally as the Northern Ireland conflict, it began in the late 1960s and is usually deemed to have ended with the Good Friday Agreement of 1998. Although the Troubles mostly took place in Northern Ireland, at times violence spilled over into parts of the Republic of Ireland, England, and mainland Europe.
The Irish War of Independence or Anglo-Irish War was a guerrilla war fought in Ireland from 1919 to 1921 between the Irish Republican Army and British forces: the British Army, along with the quasi-military Royal Irish Constabulary (RIC) and its paramilitary forces the Auxiliaries and Ulster Special Constabulary (USC). It was part of the Irish revolutionary period.
The Kingdom of Ireland was a dependent territory of England and then of Great Britain from 1542 to the end of 1800. It was ruled by the monarchs of England and then of Great Britain, and was administered from Dublin Castle by a viceroy appointed by the English king: the Lord Deputy of Ireland. Aside from brief periods, the state was dominated by the Protestant English minority. The Protestant Church of Ireland was the state church. The Parliament of Ireland was composed of Anglo-Irish nobles. From 1661, the administration controlled an Irish army. Although styled a kingdom, for most of its history it was, de facto, an English dependency. This status was enshrined in Poynings' Law and in the Declaratory Act of 1719.
The Irish Confederate Wars, also called the Eleven Years' War, took place in Ireland between 1641 and 1653. It was the Irish theatre of the Wars of the Three Kingdoms, a series of civil wars in the kingdoms of Ireland, England and Scotland – all ruled by Charles I. The conflict had political, religious and ethnic aspects and was fought over governance, land ownership, religious freedom and religious discrimination. The main issues were whether Irish Catholics or British Protestants held most political power and owned most of the land, and whether Ireland would be a self-governing kingdom under Charles I or subordinate to the parliament in England. It was the most destructive conflict in Irish history and caused 200,000–600,000 deaths from fighting as well as war-related famine and disease.
The history of the British Isles began with its sporadic human habitation during the Palaeolithic from around 900,000 years ago. The British Isles has been continually occupied since the early Holocene, the current geological epoch, which started around 11,700 years ago. Mesolithic hunter-gatherers migrated from the Continent soon afterwards at a time when there was no sea barrier between Britain and Europe, but there was between Britain and Ireland. There were almost complete population replacements by migrations from the Continent at the start of the Neolithic around 4,100 BC and the Bronze Age around 2,500 BC. Later migrations contributed to the political and cultural fabric of the islands and the transition from tribal societies to feudal ones at different times in different regions.
Irish republicanism is the political movement for an Irish republic, void of any British rule. Throughout its centuries of existence, it has encompassed various tactics and identities, simultaneously elective and militant and has been both widely supported and iconoclastic.
The Plantation of Ulster was the organised colonisation (plantation) of Ulster – a province of Ireland – by people from Great Britain during the reign of King James VI and I. Most of the settlers came from southern Scotland and northern England; their culture differed from that of the native Irish. Small privately funded plantations by wealthy landowners began in 1606, while the official plantation began in 1609. Most of the land had been confiscated from the native Gaelic chiefs, several of whom had fled Ireland for mainland Europe in 1607 following the Nine Years' War against English rule. The official plantation comprised an estimated half a million acres (2,000 km2) of arable land in counties Armagh, Cavan, Fermanagh, Tyrone, Donegal, and Londonderry. Land in counties Antrim, Down, and Monaghan was privately colonised with the king's support.
The Irish Rebellion of 1798 was a popular insurrection against the British Crown in what was then the separate, but subordinate, Kingdom of Ireland. The main organising force was the Society of United Irishmen. First formed in Belfast by Presbyterians opposed to the landed Anglican establishment, the Society, despairing of reform, sought to secure a republic through a revolutionary union with the country's Catholic majority. The grievances of a rack-rented tenantry drove recruitment.
The Wars of the Three Kingdoms, sometimes known as the British Civil Wars, were a series of intertwined conflicts fought between 1639 and 1653 in the kingdoms of England, Scotland and Ireland, then separate entities united in a personal union under Charles I. They include the 1639 to 1640 Bishops' Wars, the First and Second English Civil Wars, the Irish Confederate Wars, the Cromwellian conquest of Ireland and the Anglo-Scottish War of 1650–1652. They resulted in victory for the Parliamentarian army, the execution of Charles I, the abolition of monarchy, and founding of the Commonwealth of England, later The Protectorate, a unitary state which controlled the British Isles until the Stuart Restoration in 1660.
Events from the year 1914 in Ireland.
The Irish Rebellion of 1641 was an uprising in Ireland, initiated on 23 October 1641 by Catholic gentry and military officers. Their demands included an end to anti-Catholic discrimination, greater Irish self-governance, and return of confiscated Catholic lands. Planned as a swift coup d'état to gain control of the Protestant-dominated central government, instead it led to the 1641–1653 Irish Confederate Wars, part of the wider Wars of the Three Kingdoms.
The Nine Years' War, sometimes called Tyrone's Rebellion, took place in Ireland from 1593 to 1603. It was fought between an Irish confederacy—led mainly by Hugh O'Neill of Tyrone and Hugh Roe O'Donnell of Tyrconnell—against English rule in Ireland, and was a response to the ongoing Tudor conquest of Ireland. The war began in Ulster and northern Connacht, but eventually engulfed the entire island. The Irish alliance won numerous victories against the English forces in Ireland, such as the Battle of Clontibret (1595) and the Battle of the Yellow Ford (1598), but the English won a pivotal victory against the alliance and their Spanish allies in the siege of Kinsale (1601–02). The war ended with the Treaty of Mellifont (1603). Many of the defeated northern lords left Ireland to seek support for a new uprising in the Flight of the Earls (1607), never to return. This marked the end of Gaelic Ireland and created the groundwork for the foundation of the Plantation of Ulster.
The Tudor conquestof Ireland took place during the 16th century under the Tudor dynasty, which ruled the Kingdom of England. The Anglo-Normans had conquered swathes of Ireland in the late 12th century, bringing it under English rule. In the 14th century, the effective area of English rule shrank markedly, and from then most of Ireland was held by native Gaelic chiefdoms. Following a failed rebellion by the Earl of Kildare in the 1530s, the English Crown set about restoring its authority. Henry VIII of England was made "King of Ireland" by the Crown of Ireland Act 1542. The conquest involved assimilating the Gaelic nobility by way of "surrender and regrant"; the confiscation and colonisation ('plantation') of lands with settlers from Britain; imposing English law and language; banning Catholicism, dissolving the monasteries and making Anglican Protestantism the state religion.
Ireland during the period of 1536–1691 saw the first full conquest of the island by England and its colonisation with mostly Protestant settlers from Great Britain. This would eventually establish two central themes in future Irish history: subordination of the country to London-based governments and sectarian animosity between Catholics and Protestants. The period saw Irish society outside of the Pale transform from a locally driven, intertribal, clan-based Gaelic structure to a centralised, monarchical, state-governed society, similar to those found elsewhere in Europe. The period is bounded by the dates 1536, when King Henry VIII deposed the FitzGerald dynasty as Lords Deputies of Ireland, and 1691, when the Catholic Jacobites surrendered at Limerick, thus confirming Protestant dominance in Ireland. This is sometimes called the early modern period.
The first evidence of human presence in Ireland dates to around 34,000 years ago, with further findings dating the presence of homo sapiens to around 10,500 to 7,000 BCE. The receding of the ice after the Younger Dryas cold phase of the Quaternary, around 9700 BCE, heralds the beginning of Prehistoric Ireland, which includes the archaeological periods known as the Mesolithic, the Neolithic from about 4000 BCE, and the Copper Age beginning around 2500 BCE with the arrival of the Beaker Culture. The Irish Bronze Age proper begins around 2000 BCE and ends with the arrival of the Iron Age of the Celtic Hallstatt culture, beginning about 600 BCE. The subsequent La Tène culture brought new styles and practices by 300 BCE.
The word Fenian served as an umbrella term for the Irish Republican Brotherhood (IRB) and their affiliate in the United States, the Fenian Brotherhood. They were secret political organisations in the late 19th and early 20th centuries dedicated to the establishment of an independent Irish Republic. In 1867, they sought to coordinate raids into Canada from the United States with a rising in Ireland. In the 1916 Easter Rising and the 1919–1921 Irish War of Independence, the IRB led the republican struggle.
The British Militia was the principal military reserve force of the Kingdom of Great Britain. Militia units were repeatedly raised in Great Britain during the Georgian era for internal security duties and to defend against external invasions. The Militia Act 1757, passed by the Parliament of Great Britain after the outbreak of the Seven Years' War, led to the rapid expansion of the British Militia in order to defend from potential French invasions. In the Kingdom of Ireland, a client state of Great Britain, the equivalent force was the Irish Militia, which saw heavy service in the Irish Rebellion of 1798 alongside British militia units. The existence of militia units in Great Britain and Ireland played an important role in freeing regular troops from the British and Irish establishments for overseas service.
Ulster Protestants are an ethnoreligious group in the Irish province of Ulster, where they make up about 43.5% of the population. Most Ulster Protestants are descendants of settlers who arrived from Britain in the early 17th century Ulster Plantation. This was the settlement of the Gaelic, Catholic province of Ulster by Scots and English speaking Protestants, mostly from the Scottish Lowlands and Northern England. Many more Scottish Protestant migrants arrived in Ulster in the late 17th century. Those who came from Scotland were mostly Presbyterians, while those from England were mostly Anglicans. There is also a small Methodist community and the Methodist Church in Ireland dates to John Wesley's visit to Ulster in 1752. Although most Ulster Protestants descend from Lowland Scottish people, many descend from English, and to a lesser extent, from Irish, Welsh and Huguenots.
The Irish people served in the British Armed Forces. All of Ireland was part of the United Kingdom from January 1801 to December 1922, and during this time in particular many Irishmen fought in the British Army. Northern Ireland remains within the United Kingdom. Different social classes joined the military for various reasons, including the Anglo-Irish officers who thoroughly wished to support the "mother country", while others, typically poorer Irish Catholics, did so to support their families or seeking adventure.
