Military Wiki
National Army
Participant in Irish Civil War
File:Oglaigh na heireann.png
National Army Cap Badge
Active 31 January 1922 – 1 October 1924
Leaders Michael Collins
Richard Mulcahy
Area of
Southern Ireland, later Irish Free State
Strength 55,000
Originated as Pro-Treaty Irish Republican Army (IRA)
Became Defence Forces
Opponents Anti-Treaty Irish Republican Army (IRA)

The National Army, sometimes unofficially referred to as the Free State army, was the army of the Irish Free State (initially Southern Ireland) from January 1922 until October 1924. Its role in this period was defined by its service in the Irish Civil War, in defence of the institutions established by the Anglo-Irish Treaty. Michael Collins, was the army's first chief of staff from its establishment until his death in August 1922.

The army made its first public appearance on 31 January 1922, when command of Beggars Bush Barracks was handed over from the British Army.[1] Its first troops were those volunteers of the Irish Republican Army (IRA) who supported the Anglo-Irish Treaty and the "Provisional Government of Ireland" formed thereunder. Conflict arose between the National Army and the anti-Treaty components of the IRA, which did not support the government of the Irish Free State. On 28 June 1922 the National Army commenced an artillery bombardment of anti-Treaty IRA forces who were occupying the Four Courts in Dublin, thus beginning the Irish Civil War.

The National Army was greatly expanded in size to fight the civil war against the anti-Treaty IRA, in a mostly counter-insurgency campaign that was brought to a successful conclusion in May 1923. In October 1924, the Army was reorganised into a smaller, better regulated force; the term "National Army" fell into disuse thereafter.[citation needed]


The National Army was constituted from the revolutionary Irish Republican Army (IRA), which emerged from the successful Irish War of Independence fought as a guerrilla campaign with the British Army. On 31 January 1922 the first unit of the new National Army, a former IRA unit of the Dublin Guard, took possession of Beggars Bush Barracks, the first British barracks to be handed to the new State. Michael Collins envisaged the new Army being built around the pre-existing IRA, but over half of this organisation rejected the compromises made in the Anglo-Irish Treaty, and favoured upholding the revolutionary Irish Republic that had existed from 1919 until 1921. In February 1922, the new Provisional Government began to recruit volunteers into the National Army. A force of 4,000 troops was envisaged, but with the impending Civil War, on 5 July 1922 the Provisional Government authorised an establishment of 35,000 men; by May 1923 this had grown to 53,000 troops. The National Army lacked the expertise necessary to train a force of that size, so that approximately 20 percent of its officers and 50 percent of its soldiers were Irish ex-servicemen of the British Army. These afforded considerable combat experience to the Army.[2]

The Civil War

In March 1922 there was a major stand-off between up to 700 National Army and anti-treaty IRA in Limerick over who would occupy the military barracks being vacated by departing British troops. The situation was temporarily resolved in April when the two sides agreed to occupy two barracks each.[3] In April 1922 General Adamson, a National Army soldier, was shot dead by the IRA in Athlone. In early May 1922 there was an even more serious clash in Kilkenny when the IRA occupied the centre of the town and 200 National Army troops were sent from Dublin to disperse them.[4] 18 people were killed in the fighting in Kilkenny. In a bid to avoid an all-out civil war, both sides agreed to a truce on 3 May 1922.

On 14 April 1922, 200 Anti-Treaty IRA soldiers led by Rory O'Connor occupied the Four Courts and several other buildings in central Dublin, resulting in a tense stand-off.[5] On 27 June 1922, the Four Courts IRA garrison kidnapped JJ "Ginger" O'Connell, a General in the National Army. After giving the Four Courts garrison a final ultimatum to leave the building, the Provisional Government decided to end the stand-off by shelling the Four Courts garrison into surrender: at 4.29am on 28 June 1922, 18-pounder guns opened fire on the Four Courts. The Provisional Government appointed Michael Collins as Commander-in-Chief of the National Army. This was the point of no return and is regarded as the beginning of the Civil War.[6] The IRA contingent in the Four Courts, who had only small arms, surrendered after two days of shelling and the buildings were stormed by National Army troops. Fighting continued in Dublin until 5 July 1922, as IRA units from the Dublin Brigade led by Oscar Traynor occupied O'Connell Street, provoking a week's more street fighting. This fighting cost both sides, with 65 killed and 280 wounded in all.

The British supplied artillery, aircraft, armoured cars, machine guns, small arms and ammunition to the National Army.[7] Michael Collins, Richard Mulcahy and Eoin O'Duffy planned a nationwide National Army offensive, sending columns overland to take Limerick and Waterford and seaborne forces to Counties Cork, Kerry and Mayo. The only true conventional battle during the offensive was the Battle of Killmallock. Collins was killed in an ambush by IRA forces at Béal na Bláth in County Cork on 22 August 1922; General Richard Mulcahy then took command.

Some of the National Army's most effective troops were the Dublin Guard, who were to the forefront of the Free state offensive in the summer of 1922. The Guard was formed in June 1921 by an amalgamation of the IRA Squad and Dublin IRA Active Service Unit – both pro-Treaty in sympathy due to their links with Michael Collins. Its officers, 'formed the cadre of the Dublin Guard'.[8] After the onset of Civil War, the Guard was rapidly expanded by the recruitment of many more men, including Irish veterans of he British Army. They have been described as "an eclectic mix of IRA veterans loyal to Collins and ex-Royal Dublin Fusiliers".[9] The Guard acted, particularly in County Kerry, which they occupied after a successful assault on Tralee in August 1922, with fearsome brutality, a reputation persisting to this day and began the summary execution of captured IRA soldiers. The most notorious example of this occurred at Ballyseedy where nine IRA prisoners were tied to a landmine; the detonation killed eight and only left one, Stephen Fuller, who was blown clear by the blast to escape.[10]

Frank Aiken, IRA Chief of Staff ordered IRA volunteers to dump arms on 24 May 1923, ending the fighting.

Establishment of Defence Forces

In the autumn of 1923, the government started to reduce the size of the National Army to peacetime levels. This entailed a reduction of 30,000 personnel (including 2,200 officers) by March 1924. A small group of officers, led mainly by former members of the Squad, attempted to resist the efforts to demobilise. This situation evolved into what became called the "Army Mutiny",[11] which after an ultimatum, was resolved relatively peaceably with recognition of the authority of the Irish Free State's Government.[11]

On 3 August 1923 the Irish Free State passed the Defence Forces (Temporary Provisions) Act, raising "an armed force to be called Óglaigh na hÉireann (hereinafter referred to as the Forces) consisting of such number of officers, non-commissioned officers, and men as may from time to time be provided by the Oireachtas." "The Forces shall be established as from a date to be fixed by Proclamation of the Executive Council in the Iris Oifigiúil"[12] The establishment of the Forces was on 1 October 1924.

This date marks the ending of the initial phase of the National Army and the legal establishment of the Defence Forces as the Irish Free State's military force. However, it was not a new force: the legislation was explicit that the Defence Forces would have the same legality, organisation, personnel, orders and regulations as the 1922–24 force.[13][14]


The National Army's initial organisation was based on the IRA's system of Divisions and Brigades.[15] In January 1923 a new organisation was established. The Irish Free State was divided into nine Commands.[15]

The Nine Commands were:

  • Dublin Command
  • Athlone Command
  • Donegal Command
  • Claremorris Command
  • Limerick Command
  • Kerry Command
  • Waterford Command
  • Cork Command
  • Curragh Command

The Army Corps were:

  • Armoured Car Corps
  • Artillery Corps
  • Army Corps of Engineers
  • Works Corps
  • Railway Protection, Repair and Maintenance Corps
  • Salvage Corps
  • Army Signal Corps
  • Army Medical Corps
  • Transport Corps
  • Corps of Military Police
  • Air Service


The National Army officer's uniform was made of dark green serge and worn with a Sam Browne belt.[16] The ordinary volunteer's uniform was a similar pattern, worn with British 1908 pattern webbing.[16] A greatcoat was issued for bad weather. All ranks wore brown boots and leggings. The cap badge and buttons of the Irish Volunteers and the pre-Independence IRA were worn, in recognition of the National Army's origins.[16]

Rank Markings

Rank markings were coloured cloth cuff bands and coloured diamond shaped cloth cap badge backing.[16]

Rank Cuff Bands Cap Diamonds
Volunteer N/A N/A
Corporal 1 Green Green
Sergeant 2 Green Green
Sergeant Major 3 Green Green
2nd Lieutenant 1 Blue Blue
Lieutenant 2 Blue Blue
Captain 3 Blue Blue
Vice Commandant (Battalion) 2 Purple Purple
Lieutenant Commandant (Brigade) 2 Brown Brown
Lieutenant Commandant (Division) 2 Red Red
Commandant (Battalion) 3 Purple Purple
Commandant (Brigade) 3 Brown Brown
Commandant (Division) 3 Red Red
Brigadier 2 Brown with narrow Gold band between Brown
Colonel Commandant 2 Red with narrow Gold band between Red

General Officers' markings were cloth bands on shoulder strap, collar gorget and cap diamonds.[16]

Rank Shoulder Bands Collar Gorget Cap Diamonds
Division Commandant General 1 Gold between 2 Red Red and Gold Yellow
GHQ Commandant General 1 Gold Yellow Yellow
GHQ Major General 2 Gold one wide, one narrow Gold and Yellow Yellow
GHQ Lieutenant General 2 Gold Gold and Yellow Yellow
GHQ General 3 Gold Gold and Yellow Yellow

Rank markings were re-arranged on 31 January 1923:[16]

Rank Bars Worn
Private N/A N/A
Corporal 1 Green Left Arm
Sergeant 2 Green Left Arm
Sergeant Major 3 Green Left Arm
2nd Lieutenant 1 Blue Shoulder Strap
Lieutenant 2 Blue Shoulder Strap
Captain 3 Blue Shoulder Strap
Commandant 2 Red Shoulder Strap
Colonel 3 Red Shoulder Strap and Collar
Major General 2 Red with 1 Gold between Shoulder Strap and Collar
Lieutenant General 2 Gold Shoulder Strap and Collar
General 3 Gold Shoulder Strap and Collar

Armoured Fighting Vehicles, Aircraft and Weapons

Armoured Fighting Vehicles



See also


  1. G White & B O'Shea, Irish Volunteer Soldier 1913–23, Osprey 2003, pp15.
  2. Cottrell, Peter: The Irish Civil War 1922–23, p. 23, Osprey Publishing Ltd. (2008) ISBN 978-1-84603-270-7
  3. Noel C. Harrington, The Kerry Landing, p.13
  4. Michael Hopkinson, Green Against Green, p.75
  5. Calton Younger, "Ireland's Civil War", Muller, London 1968; pp.258–259.
  6. Niall C. Harrington, Kerry Landings, p.22
  7. Cottrell, Peter: Saorstát Éireann forces, p.23
  8. John Regan, The Irish Counter Revolution, p153
  9. Cottrell, Peter: p.24
  10. Michael Hopkinson, Green Against Green, p.241
  11. 11.0 11.1 The Establishment of Defence Forces
  13. 235. —The armed forces of the State as at present constituted and existing (hereinafter referred to as the National Forces) shall be deemed to be the armed forces to be raised under Article 46 of the Constitution and the maintenance thereof is hereby declared to be legal. +
  14. – 237. —The organisation of the National Forces shall be as at present existing. The Minister may however make such changes therein as he may deem necessary.
    – 238. —All orders and regulations now in force in the National Forces shall continue to be in full force and effect.
    – 239. —All soldiers now serving in the National Forces by virtue of any agreement or attestation shall be liable to continue to serve in accordance with the terms of such agreement or attestation.
  15. 15.0 15.1 The Origins of the Defence Forces
  16. 16.0 16.1 16.2 16.3 16.4 16.5 G White & B O'Shea, Irish Volunteer Soldier 1913–23, Osprey 2003

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