page_title: Irish War of Independence
section_title: IRA organisation and operations
hierarchical_section_title: Irish War of Independence / Course of the war / IRA organisation and operations
caption_attribution_description: English: General Michael Collins inspects a soldier.
context_page_description: 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 and its paramilitary forces the Auxiliaries and Ulster Special Constabulary. It was an escalation of the Irish revolutionary period into warfare.
  In April 1916, Irish republicans launched the Easter Rising against British rule and proclaimed an Irish Republic. Although it was crushed after a week of fighting, the Easter Rising and the British response led to greater popular support for Irish independence. In the December 1918 election, the republican party Sinn Féin won a landslide victory in Ireland. On 21 January 1919 they formed a breakaway government and declared Irish independence. That day, two RIC officers were shot dead in the Soloheadbeg ambush by IRA volunteers acting on their own initiative. The conflict developed gradually. For much of 1919, IRA activity involved capturing weaponry and freeing republican prisoners, while the Dáil set about building a state.
context_section_description: Michael Collins was a driving force behind the independence movement. Nominally the Minister of Finance in the republic's government and IRA Director of Intelligence, he was involved in providing funds and arms to the IRA units and in the selection of officers. Collins' charisma and organisational capability galvanised many who came in contact with him. He established what proved an effective network of spies among sympathetic members of the Dublin Metropolitan Police's (DMP) G Division and other important branches of the British administration. The G Division men were a relatively small political division active in subverting the republican movement and were detested by the IRA as often they were used to identify volunteers, who would have been unknown to British soldiers or the later Black and Tans. Collins set up the "Squad", a group of men whose sole duty was to seek out and kill "G-men" and other British spies and agents. Collins' Squad began killing RIC intelligence officers in July 1919. Many G-men were offered a chance to resign or leave Ireland by the IRA. One spy who escaped with his life was F. Digby Hardy, who was exposed by Arthur Griffith before an "IRA" meeting, which in fact consisted of Irish and foreign journalists, and then advised to take the next boat out of Dublin.
  The Chief of Staff of the IRA was Richard Mulcahy, who was responsible for organising and directing IRA units around the country. In theory, both Collins and Mulcahy were responsible to Cathal Brugha, the Dáil's Minister of Defence, but, in practice, Brugha had only a supervisory role, recommending or objecting to specific actions. A great deal also depended on IRA leaders in local areas (such as Liam Lynch, Tom Barry, Seán Moylan, Seán Mac Eoin and Ernie O'Malley) who organised guerrilla activity, largely on their own initiative. For most of the conflict, IRA activity was concentrated in Munster and Dublin, with only isolated active IRA units elsewhere, such as in County Roscommon, north County Longford and western County Mayo.
  While the paper membership of the IRA, carried over from the Irish Volunteers, was over 100,000 men, Michael Collins estimated that only 15,000 were active in the IRA during the course of the war, with about 3,000 on active service at any time. There were also support organisations Cumann na mBan (the IRA women's group) and Fianna Éireann (youth movement), who carried weapons and intelligence for IRA men and secured food and lodgings for them. The IRA benefitted from the widespread help given to them by the general Irish population, who generally refused to pass information to the RIC and the British military and who often provided "safe houses" and provisions to IRA units "on the run".
  Much of the IRA's popularity arose from the excessive reaction of the British forces to IRA activity. When Éamon de Valera returned from the United States, he demanded in the Dáil that the IRA desist from the ambushes and assassinations, which were allowing the British to portray it as a terrorist group and to take on the British forces with conventional military methods. The proposal was immediately dismissed.
caption: Michael Collins
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