Fianna Éireann
Fianna Éireann (Irish: "Warriors of Ireland", named after the mythological Fianna) is an Irish republican youth movement. It was founded in 1909 by Countess Markievicz and Bulmer Hobson, along the paramilitary lines of Baden-Powell's Boy Scouts, but emphasising Irish rather than British nationalism. Many Fianna had graduated to the IRA by the time of the War of Independence (1919–1921).
The Provisional IRA established a similar organisation in the 1970's, as a youth wing. It is not as widespread today as it was then. The Continuity IRA runs a similar organisation. "Fianna na hEireann" [sic] is currently on the list of terrorist groups proscribed in the United Kingdom under the Terrorism Act (2000).