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Chief of Staff of the Defence Forces (Ireland)
File:Conor O'Boyle.jpg
Nominated by Government of Ireland on the recommendation of the Minister for Defence
Appointed by President of Ireland
Incumbent Lieutenant General Conor O'Boyle

The Chief of Staff of the Defence Forces (COS) (Irish language: Ceann Foirne na bhFórsaí Cosanta ) is charged with the executive management of the Irish Defence Forces, and is the most senior military officer of the Army, Naval Service and Air Corps branches. The Chief of Staff is appointed by the President of Ireland, who is the Supreme Commander of the Defence Forces, on the recommendation of the Minister for Defence subject to the approval of the Government of Ireland. The office of the Chief of Staff consists of his personal staff, a strategic planning office and a public relations section.[1]

The Defence Forces Chief of Staff sits on the government's National Security Committee (NSC).[2]

The Chief of Staff delegates remaining executive duties to two Deputy Chiefs of Staff (who hold the rank of Major General or equivalent) and one Assistant Chief of Staff (Brigadier General);

  • The Deputy Chief of Staff Operations (D COS Ops) is tasked with operational matters.
  • The Deputy Chief of Staff Support (D COS Sp) is tasked with military support matters.
  • The Assistant Chief of Staff Support (ACOS Sp) is also tasked with military support matters.[1]

The current Chief of Staff of the Defence Forces is Lieutenant General Conor O'Boyle of the Irish Army. Lt Gen O'Boyle was appointed on 12 August 2013.[3]

Current General Staff of the Defence Forces[]

Position Photograph Incumbent Branch
Chief of Staff (COS) File:Conor O'Boyle.jpg File:IE-Army-OF8.png Lieutenant General Conor O'Boyle File:Badge of the Irish Defence Forces.svg Irish Army
Deputy Chief of Staff Operations (D COS Ops) Error creating thumbnail: File:IE-Army-OF7.png Major General Kieran Brennan File:Badge of the Irish Defence Forces.svg Irish Army
Deputy Chief of Staff Support (D COS Sp) File:An Taoiseach Enda Kenny with D COS Sp R Adm Mark Mellett.jpg Rear Admiral Mark Mellett DSM Nscoa Irish Naval Service
Assistant Chief of Staff Support (ACOS Sp) File:IE-Army-OF6.png Brigadier General Colm Campbell File:Badge of the Irish Defence Forces.svg Irish Army

Brigade Commanders[]

The country is divided into three areas for administrative and operational reasons, and in each area there is an Irish Army infantry brigade. The three brigade group structure envisages distinct operational areas of responsibility for each of the brigades and is supported in their responsibilities by the Naval Service and Air Corps. Each of the Brigade formations and the Air Corps are commanded by a Brigadier General, while the Naval Service is commanded by a Commodore;[4]

List of Irish Chiefs of Staff[]

No. Image Rank Name Branch Date appointed Relinquished appointment Time in appointment
1. Error creating thumbnail: Lieutenant General Eoin O'Duffy File:Badge of the Irish Defence Forces.svg Irish Army February 1922 July 1922 5 months
2. File:Dickmulc.jpg Lieutenant General Richard Mulcahy File:Badge of the Irish Defence Forces.svg Irish Army July 1922 August 1922 1 month
3. Lieutenant General Sean MacMahon File:Badge of the Irish Defence Forces.svg Irish Army August 1922 March 1924 1 year, 7 months
4. Lieutenant General Peadar MacMahon File:Badge of the Irish Defence Forces.svg Irish Army March 1924 March 1927 3 years
5. Lieutenant General Daniel Hogan File:Badge of the Irish Defence Forces.svg Irish Army March 1927 February 1929 1 year, 11 months
6. File:Sean MacEoin.jpg Lieutenant General Seán Mac Eoin File:Badge of the Irish Defence Forces.svg Irish Army February 1929 October 1929 8 months
7. Lieutenant General Joseph Sweeney File:Badge of the Irish Defence Forces.svg Irish Army October 1929 October 1931 2 years
8. Lieutenant General Michael Brennan File:Badge of the Irish Defence Forces.svg Irish Army October 1931 January 1940 8 years, 3 months
9. Lieutenant General Daniel McKenna File:Badge of the Irish Defence Forces.svg Irish Army January 1940 January 1949 9 years
10. Lieutenant General Liam Archer File:Badge of the Irish Defence Forces.svg Irish Army January 1949 January 1952 3 years
11. Lieutenant General W. A. Egan File:Badge of the Irish Defence Forces.svg Irish Army January 1952 December 1954 2 years, 11 months
12. Lieutenant General Patrick Mulcahy File:Badge of the Irish Defence Forces.svg Irish Army January 1955 December 1959 4 years, 11 months
13. Lieutenant General John McKeown File:Badge of the Irish Defence Forces.svg Irish Army January 1960 December 1960 11 months
14. Lieutenant General Sean Collins Powell File:Badge of the Irish Defence Forces.svg Irish Army January 1961 March 1962 1 year, 2 months
15. Lieutenant General John McKeown (2nd term) File:Badge of the Irish Defence Forces.svg Irish Army April 1962 March 1971 8 years, 11 months
16. Lieutenant General Thomas O'Carroll File:Badge of the Irish Defence Forces.svg Irish Army April 1971 July 1976 5 years, 3 months
17. Lieutenant General Carl O'Sullivan File:Badge of the Irish Defence Forces.svg Irish Army August 1976 June 1981 4 years, 11 months
17. Lieutenant General Louis Hogan DSM File:Badge of the Irish Defence Forces.svg Irish Army June 1981 April 1984 2 years, 10 months
18. Lieutenant General Gerald O'Sullivan File:Badge of the Irish Defence Forces.svg Irish Army April 1984 February 1986 1 year, 10 months
19. Lieutenant General Tadgh O'Neill File:Badge of the Irish Defence Forces.svg Irish Army February 1986 October 1989 3 years, 8 months
20. Lieutenant General James Parker File:Badge of the Irish Defence Forces.svg Irish Army October 1989 April 1992 2 years, 6 months
21. Lieutenant General Noel Bergin File:Badge of the Irish Defence Forces.svg Irish Army April 1992 December 1994 2 years, 8 months
22. Lieutenant General Gerald McMahon File:Badge of the Irish Defence Forces.svg Irish Army February 1995 August 1998 3 years, 6 months
23. Lieutenant General David Stapleton File:Badge of the Irish Defence Forces.svg Irish Army August 1998 24 September 2000 2 years, 1 month
24. Lieutenant General Colm Mangan File:Badge of the Irish Defence Forces.svg Irish Army 25 September 2000 20 February 2004 3 years, 4 months
25. Lieutenant General James Sreenan File:Badge of the Irish Defence Forces.svg Irish Army 21 February 2004 28 June 2007 3 years, 4 months
26. File:Dermot Earley 2009.jpg Lieutenant General Dermot Earley DSM File:Badge of the Irish Defence Forces.svg Irish Army 28 June 2007 9 June 2010 2 years
27. Lt Gen McCann at CGSC HoF induction Lieutenant General Sean McCann File:Badge of the Irish Defence Forces.svg Irish Army 9 June 2010 12 August 2013 3 years, 2 months
28. File:Conor O'Boyle.jpg Lieutenant General Conor O'Boyle File:Badge of the Irish Defence Forces.svg Irish Army 12 August 2013 Currently in appointment
Retiring September 2015
2 years

See also[]

References[]

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