Irish Reserve Defence Forces

The Reserve Defence Forces (RDF) (Irish: Na hÓglaigh Cúltaca) are the reserve components of the Defence Forces of Ireland. The RDF is organized into the First Line Reserve (FLR) and a Second Line Reserve. The First Line Reserve comprises former members of the Permanent Defence Force and the Second Line Reserve comprises the Irish Army Reserve (AR) and Irish Naval Service Reserve (NSR).

The RDF was established on October 1st 2005 and replaced the Second Line Reserve, previously named An Fórsa Cosanta Áitiúil (FCÁ) in the case of the AR, and An Slua Muirí in the case of the NSR. The RDF has undergone a reorganization in tandem with the Permanent Defence Force as part of the "Single Force" concept.