<P> The Irish Army , known simply as the Army ( Irish : an tArm ) , is the land component of the Defence Forces of Ireland . As of May 2016 , approximately 7,300 men and women serve in the Irish Army , divided into two geographically organised brigades . As well as maintaining its primary roles of defending the State and internal security within the State , since 1958 the Army has had a continuous presence in peacekeeping missions around the world . The Army also participates in the European Union Battlegroups . The Air Corps and Naval Service support the Army in carrying out its roles . </P>
what do you do in the irish army
defending the State internal security within the State peacekeeping missions around the world