<Li> Irish Citizen Army </Li> <Li> Ulster Unionist Party </Li> <P> The Irish Civil War (Irish: Cogadh Cathartha na hÉireann; 28 June 1922--24 May 1923) was a conflict that followed the Irish War of Independence and accompanied the establishment of the Irish Free State, an entity independent from the United Kingdom but within the British Empire . </P> <P> The civil war was waged between two opposing groups, Irish republicans and Irish nationalists, over the Anglo - Irish Treaty . The forces of the Provisional Government (which became the Free State in December 1922) supported the Treaty, while the Republican opposition saw it as a betrayal of the Irish Republic (which had been proclaimed during the Easter Rising). Many of those who fought on both sides in the conflict had been members of the Irish Republican Army (IRA) during the War of Independence . </P>

When did the civil war in ireland end