5 February – SS Tuscania (1914) is torpedoed off the Irish coast; it is the first ship carrying United States troops to Europe to be torpedoed and sunk.
18 April – the Military Service Bill, which includes conscription in Ireland, becomes law. A conference of nationalist parties, Sinn Féin and labour movements meets in Dublin to organise an all-Ireland opposition to conscription.
5 May – 15,000 people attend an anti-conscription meeting in County Roscommon. John Dillon, leader of the Irish Parliamentary Party and Éamon de Valera of Sinn Féin share the platform in a united cause.[1]
20 May – a special anti-conscription convention is held in Dublin. It condemns the arrest and deportation of Sinn Féin members consequent to the "German Plot".
20 June – Arthur Griffith of Sinn Féin wins a by-election in East Cavan. It is Sinn Féin's first victory of the year after three successive by-election defeats.
17 July – RMS Carpathia is torpedoed and sunk off the east coast of Ireland by Imperial German Navy U-boat SM U-55; 218 of the 223 on board are rescued.[3]
11 November – at 5.00am an armistice dictated by the Allies is signed by the Germans. Six hours later World War I officially ends. Well over 206,000 Irishmen have served and over 35,000 been killed during the war;[4] there is no Irish parish without a loss.
August – Anglo-Welsh composer Philip Heseltine concludes a year's stay in Ireland with the writing of a number of songs which will be published under the pseudonym Peter Warlock.
^"The mystery of the Sinn Féin film". Drogheda Independent. Independent News & Media. 15 October 2004. [..] scenes included the Anti-Conscription meeting at Ballaghadereen, Co Roscommon with John Dillon and de Valera sharing the same platform;