Question: Noel Conroy joined what police force of the Republic of Ireland?

Context paragraphs:
List of Commissioners of New South Wales Police: The Commissioner of the New South Wales Police Force (Known from 1851 to 1926 as the Inspector-General of the New South Wales Police Force) is the head of New South Wales's Police Force.  The post is currently held by Mick Fuller, who replaced Andrew Scipione on 31 March 2017.  The rank is usually referred to as the New South Wales Police Commissioner or simply just "Commissioner".  The New South Wales Police Force has had 22 Commissioners since 1851.

San Juan Police Department: The "Policia Municipal de San Juan" (San Juan Municipal Police or San Juan Police Department, in English) is the main police force for the city of San Juan, Puerto Rico, with jurisdiction only on the city limits of San Juan.  It is also the largest city police force in Puerto Rico, and the second largest police force in the island after of the Puerto Rico Police Department.  It was created in 1977 under law #19 of May 12, 1977, known as "Ley de la Policia Municipal" (Municipal Police Law) creating local police forces in each city of Puerto Rico .

Royal Irish Constabulary: The Royal Irish Constabulary (RIC, Irish: "Constáblacht Ríoga na hÉireann"; simply called the Irish Constabulary 1836–67) was the police force in Ireland from the early nineteenth century until 1922.  A separate civic police force, the unarmed Dublin Metropolitan Police controlled the capital, and the cities of Derry and Belfast, originally with their own police forces, later had special divisions within the RIC.  About seventy-five percent of the RIC were Roman Catholic and about twenty-five percent were of various Protestant denominations, the Catholics mainly constables and the Protestants officers.  The RIC's successful system of policing influenced the armed Canadian North-West Mounted Police (predecessor of the Royal Canadian Mounted Police), the armed Victoria Police force in Australia, and the armed Royal Newfoundland Constabulary in Newfoundland.  In consequence of the Anglo-Irish Treaty, the RIC was disbanded in 1922 and was replaced by the Garda Síochána in the Irish Free State and the Royal Ulster Constabulary in Northern Ireland.

South African Republic Police: The South African Republic Police, known in the original Dutch_language as the Zuid-Afrikaansche Republiek Politie or ZARP was the police force of the former country South African Republic, one of two Internationally recognized Boer countries of the mid 19th to early 20th century.  Members of the police force were known as ZARPs.  After the Union of South Africa was established in 1910, the force was incorporated into the South African Police Force.

Special police: Special police (also see auxiliary police) usually describes a police force or unit within a police force whose duties and responsibilities are significantly different from other forces in the same country or from other police in the same force, although there is no consistent international definition.  A special constable, in most cases, is not a member of a special police force; in countries in the Commonwealth of Nations and often elsewhere, a special constable is a voluntary or part-time member of a national or local police force or a person involved in law enforcement who is not a police officer but has some of the powers of a police officer.

Garda Síochána: An Garda Síochána (] ; meaning "the Guardian of the Peace"), more commonly referred to as the Gardaí or "the Guards" (] "Guardians"), is the police force of the Republic of Ireland.  The service is headed by the Garda Commissioner who is appointed by the Irish Government.  Its headquarters are in Dublin's Phoenix Park.

Noel Conroy: Noel Conroy was the Garda Commissioner from July 2003 until he retired in November 2007.  He was born in Aughleam, Erris, County Mayo.  He attended Aughleam N.S. and St. Nathy’s College, Ballaghaderreen.  He joined the Garda Síochána in 1963 and has had a distinguished career, serving at senior level in demanding sectors in the Gardaí.

Kochi City Police: Kochi City Police (KCP) is the police force of the Indian city of Kochi.  The force is headed by a Police Commissioner, an IPS officer.  The city police was reorganized as Metro Police force, on 1 April 1966, after forming City Corporation of Cochin.  Kochi City Police is one of the most advanced police force, considering the strategic importance of the city.  The Kochi City police teamed up with Vodafone India, for dedicated mobile communications support.

Seoul Metropolitan Police Agency: The Seoul Metropolitan Police Agency (SMPA; Hangul: Korean: 서울지방경찰청 ; ; Hanja: 서울地方警察廳 ) is the primary police force for the South Korean capital city of Seoul; it is not an independent police force in of itself, but is one of 16 provincial sub-divisions of the National Police Agency.  The SMPA is headquartered along with the National Police Headquarters in Seoul itself.  While modern police agencies of Seoul can trace their history back to 1945 with the creation of a Korean police force, the modern-day Metropolitan Police Agency in Seoul came into being on August 1, 1991 and currently polices over 10 million inhabitants.

Law enforcement in Ireland: This is a description of law enforcement in Northern Ireland and the Republic of Ireland.  Before the Republic (then called the Irish Free State) left the union, one police force - the Royal Irish Constabulary - policed almost the whole island (aside from Dublin, where the Dublin Metropolitan Police were the main force, Belfast where the Belfast Borough Police were the main force and the borough of Londonderry where the Londonderry Borough Police were the main force before merging with the RIC.  See List of defunct law enforcement agencies in the United Kingdom and Irish Police records and also Royal Irish Constabulary Forum for other forces in Ireland that have been disbanded.) .

Supporting paragraphs: Noel Conroy Garda Síochána
Answer: Garda Síochána