High Quality Content by WIKIPEDIA articles! The Battle of Dublin, a week of street fighting in Dublin from 28 June to 5 July 1922, marked the beginning of the Irish Civil War. The fighting began with an assault by the Provisional Government of the proposed Irish Free State on the Four Courts building which had been occupied by a hard-line section of the anti-Treaty Irish Republican Army, and ended with the defeat of the republicans and the securing of the capital for the Provisional Government.