Irish security forces is a term used to describe all security forces of the Republic of Ireland. The term was widely used to refer to the various security operations undertaken by the Irish state during The Troubles, and still continues to be used to describe security operations aimed at undermining the ongoing dissident Irish Republican campaign.
They consist of the following organisations;
Department of Defence
Defence Forces
Army
Army Ranger Wing (ARW)
Ordnance Corps Explosive Ordnance Disposal (EOD)
Air Corps
Naval Service
Directorate of Military Intelligence
National Security Intelligence Section (NSIS)
Defence Intelligence Section
Communications and Information Services Corps (CIS) SIGINT
Military Police Corps
Department of Justice and Equality
An Garda Síochána
Crime and Security Branch (CSB)
Special Detective Unit (SDU)
Emergency Response Unit (ERU)
National Surveillance Unit (NSU)
Airport Police Service
Dublin Harbour Police
Dún Laoghaire Harbour Police
Department of Finance
Revenue Commissioners
Customs
Department of Communications, Energy and Natural Resources
National Cyber Security Centre
Department of Jobs, Enterprise and Innovation
Director of Corporate Enforcement