Éamon de Valera Irish independence. He was arrested, sentenced to death but released for a variety of reasons, including the public response to the British execution of Rising leaders. He returned to Ireland after being jailed in England and became one of the leading political figures of the War of Independence. After the signing of the Anglo-Irish Treaty, de Valera served as the political leader of Anti-Treaty Sinn Fein until 1926, when he, along with many supporters, left the party to set up Fianna Fáil, a new political party which abandoned the policy of abstentionism from Dáil Éireann. From there, de Valera would
Fianna Éireann the Irish Free State in 1931. This was reversed when Fianna Fáil came to power in 1932, but re-introduced in 1938. During the splits in the Republican movement of the later part of the 20th century, the Fianna and Cumann na mBan supported Provisional Sinn Féin in 1969 and Republican Sinn Féin in 1986. The Fianna is a Proscribed Organisation in the United Kingdom under the Terrorism Act 2000. An earlier "Fianna" was organised "to serve as a Junior Hurling League to promote the study of the Irish Language" on 26 June 1902 at the Catholic Boys’ Hall, Falls Road,