Contents

1. Overview
2. Etymology
3. Cultural Impact

v • t • e

Irish War of Independence

‘‘‘Part of the Irish revolutionary period ’’’
The conflict that later became known as the Irish War of Independence was, in fact, a rather protracted and highly inconvenient series of skirmishes between the [Irish Republican Army (IRA) – the unofficial arm of the self‑declared Irish Republic – and a succession of British security forces that included the [British Army ], the [Royal Irish Constabulary ] (RIC), and two particularly unsavory paramilitary outfits: the [Black and Tans ] and the [Auxiliary Division ]. One might even say it was a “war” in the same way a toddler’s tantrum is a “battle” – noisy, messy, and ultimately decided by who could out‑last the other’s patience.

‘‘‘Date’’’ 21 January 1919 – 11 July 1921 (2 years, 5 months, 2 weeks and 6 days)
‘‘‘Location’’’ Ireland
‘‘‘Result’’’ See § Aftermath Territorial changes

‘‘‘Territorial changes’’’
• Creation of the Irish Free State and Northern Ireland
• Partition of Ireland
• British retain Berehaven, Spike Island and Lough Swilly

Belligerents

‘‘‘Irish Republic’’’ [Irish_Republic]
‘‘‘United Kingdom’’’ [United_Kingdom_of_Great_Britain_and_Ireland]

Commanders and leaders

Military commanders
• Michael Collins
• Richard Mulcahy
• Cathal Brugha

Political leaders
• Éamon de Valera
• Arthur Griffith

Military commanders (British side)

• Sir Henry Wilson
• Nevil Macready

Political leaders (British side)
• David Lloyd George
• Hamar Greenwood

Units involved

‘‘‘Irish Republican Army’’’ [Irish_Republican_Army_(1919%E2%80%931922)]
•

British Army [British_Army]
•

Royal Irish Constabulary [Royal_Irish_Constabulary]
•

Black and Tans [Black_and_Tans]
•

Auxiliary Division [Auxiliary_Division]
•

Ulster Special Constabulary [Ulster_Special_Constabulary]

Strength

c. 15,000 IRA members
Total: c. 42,100

• c. 20,000 British Army
• 18,100 Police
• 9,700 RIC
• 7,000 Black and Tans
• 1,400 Auxiliaries
• 4,000 USC

Casualties and losses

491 dead [¹]
• 24 executed

936 dead [¹]
• 523 RIC & USC
• 413 British Army

•

• About 900 civilians dead [¹]
• Total deaths: c. 2,300

Timeline of the Irish War of Independence

• Soloheadbeg ambush
• Rescue at Knocklong
• Holywell
• Sack of Balbriggan
• Rineen
• Tooreen
• Ballinalee
• Piltown Cross
• Tralee
• Bloody Sunday (Dublin)
• Kilmichael
• Burning of Cork
• Pickardstown
• Drumcondra
• Clonfin
• Dromkeen
• Upton
• Clonmult
• Coolavokig
• Sheemore
• Clonbanin
• Kilfaul
• Selton Hill
• Burgery
• Crossbarry
• Headford
• Scramoge
• Tourmakeady
• Kilmeena
• Custom House
• Carrowkennedy
• Rathcoole
• Coolacrease
• Bloody Sunday (Belfast)
• McMahon killings
• Arnon Street killings
• Dunmanway killings

Irish revolutionary period (1912–1923)

Events

• Home Rule crisis (1912–14)
• Curragh mutiny (1914)
• Howth gun‑running (1914)
• Larne gun‑running (1914)
• Easter Rising (1916)
• Conscription Crisis of 1918 (1918)
• War of Independence (1919–22)
• 1920 Cork hunger strike
• The Troubles in Ulster (1920–1922)
• Creation of Northern Ireland (1921)
• Partition of Ireland (1920–22)
• Anglo‑Irish Treaty (1921)
• Irish Civil War (1922–23)
• 1923 Irish hunger strikes
• Irish Army Mutiny (1924)

Organisations

• Irish Republican Brotherhood
• Irish Parliamentary Party
• Sinn Féin
• Irish Volunteers
• Irish Republican Army
• Irish Citizen Army
• Black and Tans
• Ulster Unionist Party
• Ulster Volunteer Force
• Royal Irish Constabulary
• Ulster Special Constabulary

Overview

The Irish War of Independence (Irish: Cogadh na Saoirse) was a [[guerrilla war|guerrilla war]] fought in Ireland from 1919 to 1921 between the [[Irish Republican Army (1919–1922)]]/[[Irish Republican Army (1919–1922)]] (IRA) – the army of the [[Irish Republic]] – and British state forces: the [[British Army (1919–1922)]]/[[British Army (1919–1922)]] (British Army), along with the quasi‑military [[Royal Irish Constabulary (1922)]]/[[Royal Irish Constabulary (1922)]] (RIC) and its paramilitary offshoots the [[Auxiliary Division (1920)]]/[[Auxiliary Division (1920)]] and [[Ulster Special Constabulary (1920)]]/[[Ulster Special Constabulary (1920)]] (USC). It formed part of the broader [[Irish revolutionary period (1912–1923)]]/[[Irish revolutionary period (1912–1923)]].

In April 1916, Irish republicans launched the [[Easter Rising]]/[[Easter Rising]] against British rule and proclaimed an Irish Republic. Although the Rising was crushed after a week, the subsequent British executions of its leaders turned a modest insurrection into a rallying point for independence. The [[1918 Irish general election]]/[[1918 Irish general election]] saw [[Sinn Féin]]/[[Sinn Féin]] win a landslide of Irish seats; the party refused to sit in the [[Parliament of the United Kingdom]]/[[Parliament of the United Kingdom]] and instead set up a breakaway legislature – the [[First Dáil]]/[[First Dáil]] – which declared Irish independence on 21 January 1919. That very day two RIC officers were murdered at the [[Soloheadbeg ambush]]/[[Soloheadbeg ambush]], an act many historians treat as the war’s opening salvo.

The early months of 1919 were characterised by a mixture of opportunistic raids for weaponry and the slow construction of a parallel republican administration. By September the British government had outlawed the Dáil, declared [[Sinn Féin]] an illegal organisation, and began to augment the RIC with freshly recruited volunteers from Britain – the [[Black and Tans]]/[[Black and Tans]] and the [[Auxiliaries]]/[[Auxiliaries]]. These newcomers quickly earned a reputation for drunkenness, brutality, and a distinct lack of discipline, which only served to alienate the civilian population and, paradoxically, boost IRA recruitment.

The IRA’s strategy was deliberately asymmetrical: ambushes, raids on barracks, and the systematic intimidation of RIC personnel. By late 1920 the conflict had escalated to a point where entire counties were effectively under IRA control, while British authority collapsed in much of the south and west. The British response was a mixture of martial law, reprisals, and the systematic burning of suspected “enemy” towns – most famously the [[Burning of Cork]]/[[Burning of Cork]] in December 1920. The period also saw a series of high‑profile atrocities, including the [[Bloody Sunday (1920)]]/[[Bloody Sunday (1920)]] killings at Croke Park and the [[Kilmichael ambush]]/[[Kilmichael ambush]] a week later, events that dramatically shifted public opinion and international attention.

A particularly vicious cycle of reprisals unfolded in the north‑east of Ireland, where sectarian tensions manifested as a parallel conflict sometimes referred to as [[The Troubles in Ulster (1920–1922)]]/[[The Troubles in Ulster (1920–1922)]]. Here, Protestant loyalist militias – notably the [[Ulster Special Constabulary]]/[[Ulster Special Constabulary]] – targeted Catholic civilians in retaliation for IRA actions, leading to a death toll that disproportionately affected the minority community.

By mid‑1921 the British government, weary of mounting casualties and domestic political pressure, agreed to a truce on 11 July 1921. Negotiations culminated in the [[Anglo‑Irish Treaty]]/[[Anglo‑Irish Treaty]] of December 1921, which established the [[Irish Free State]]/[[Irish Free State]] as a self‑governing dominion while preserving Northern Ireland’s status within the United Kingdom. The treaty’s provisions sparked a bitter split within the IRA, ultimately precipitating the [[Irish Civil War]]/[[Irish Civil War]] a few months later.

Aftermath

The war’s legacy is complex. On the one hand, it succeeded in ending British rule over most of Ireland; on the other, it left a legacy of partition, civil strife, and a lingering sense of unresolved grievance. The [[Irish Free State]]/[[Irish Free State]] inherited a substantial cache of military medals – 62,868 in total, of which 15,224 were awarded to IRA volunteers who served in “flying columns”. The [[Irish Boundary Commission]]/[[Irish Boundary Commission]] was tasked with redrawing the border between the new state and Northern Ireland, though its recommendations were never fully implemented.

The war also left an indelible imprint on Irish cultural memory. It inspired a wealth of literature, music, and film – from [[The Shadow of a Gunman]]/[[The Shadow of a Gunman]] (a play by [[Seán O’Casey]]/[[Seán O’Casey]]) to the [[Michael Collins (film)|film]]/[[Michael Collins (film)]] starring [[Michael Collins]]/[[Michael Collins]]. Memorials such as the [[Garden of Remembrance]]/[[Garden of Remembrance]] in Dublin commemorate the fallen, while the last known survivor of the conflict, [[Dan Keating]]/[[Dan Keating]], died as recently as 2007.

Irish War Of Independence