The Army Reserve (AR) (Irish: Cúltaca an Airm) is the reserve land component of the Irish Defence Forces. It is the second line reserve of the Irish Army. The Army Reserve involves active military service on a part-time basis, and is one of two elements of the Reserve Defence Forces, the other element being the Naval Service Reserve (NSR). In times of crisis or emergency, Reservists are liable to be called up on permanent service within the state or outside it by the Minister for Defence or Government of Ireland in accordance with the Defence Acts.