Noel Conroy joined what police force of the Republic of Ireland?
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.
Special Detective Unit The Special Detective Unit (SDU) (Irish: "Aonad Speisialta Bleachtaireachta" ) is the main domestic security agency of the "Garda Síochána", the national police force of Ireland, under the aegis of the Crime & Security Branch (CSB). It is the primary counter-terrorism and counter-espionage investigative unit in the country. The Special Detective Unit superseded the Special Branch (which they are still commonly referred to as), which itself replaced the older Criminal Investigation Department (CID), which was founded in 1921. They work in conjunction with the Defence Forces Directorate of Military Intelligence (G2) – Ireland's national intelligence service – on internal matters. The unit's headquarters are in Harcourt Street, Dublin City.