List of wars involving the Republic of Ireland

This is a list of wars involving the Republic of Ireland and its predecessor states, since the Irish War of Independence. Since the 1930s, the state has had a policy of neutrality and has only been involved in conflicts as part of United Nations peacekeeping missions.

There have been many wars on the island of Ireland throughout history. Before independence, all of Ireland was part of the United Kingdom and Irish soldiers fought in many foreign wars as part of the British military. Irish soldiers also fought in conflicts as part of other armies.

List

Conflict	Combatant 1	Combatant 2	Result
Irish War of Independence (1919–1921)	Irish Republic	United Kingdom	Victory Anglo-Irish Treaty: Dominion status for 26 counties of Southern Ireland as the Irish Free State 6 counties of Northern Ireland remain part of UK United Kingdom retains the Ports of Berehaven, Spike Island and Lough Swilly
Irish Civil War (1922–1923)	National Army	Irish Republican Army	Victory Confirmation of the Irish Free State Defeat of Anti-Treaty forces
Congo Crisis (1960–1964)	United Nations peacekeeping force Ireland Others	Katanga	Victory Debellation of the State of Katanga
Cyprus conflict (1964–present)	United Nations peacekeeping force Ireland Others	Turkey Cyprus Greece	Ongoing
The Troubles (1968–1998)	State security forces Ireland Irish Defence Forces Gardaí	Irish republican paramilitaries Provisional IRA(1969–97) Official IRA(1969–72) INLA (1974–98) IPLO (1986–92) CIRA (1994–) RIRA (1997–) Ulster loyalist paramilitaries UVF(1966–94) UDA(1971–94) RHC(1972–94) UR (1986–) LVF (1996–)	Stalemate Good Friday Agreement Principle of consent accepted by all major parties involved Devolved powers to the local Northern Ireland Assembly Ceasefire and decommissioning of weapons from paramilitary groups Withdrawal of British troops from Northern Ireland Reform of the local police force
Lebanese Civil War and South Lebanon conflict (1978–present)	United Nations peacekeeping force Ireland Others	South Lebanon Army Israel Hezbollah Amal PFLP-GC	Ongoing
Somali Civil War (1992–1995)	United Nations peacekeeping force Ireland Others	United Somali Congress	Victory UN humanitarian mandate fulfilled About 100,000 lives were saved by outside resistance Civil war is ongoing
Yugoslav Wars (1991–2001)	United Nations peacekeeping force Ireland Kosovo Force	FR Yugoslavia	Victory Stabilisation of the Balkans On-going Active Irish Presence
East Timorese Crisis (1999–2000)	United Nations peacekeeping force Ireland Others	Pro-Indonesia militia	Victory Defeat of pro-Indonesian militia Stabilisation of East Timor
Chadian Civil War (2008–2010)	European Union United Nations peacekeeping force Ireland Others	Rebel groups
Syrian Civil War in the Golan Heights (2013–2018)	United Nations peacekeeping force Ireland Others	Syrian opposition Al-Nusra Front Syria