The Curragh incident of 20 March 1914, sometimes known as the Curragh mutiny, occurred in the Curragh, County Kildare, Ireland. The Curragh Camp was then the main base for the British Army in Ireland, which at the time still formed part of the United Kingdom of Great Britain and Ireland. Ireland was scheduled to receive a measure of devolved government, which included Ulster, later in the year. The incident is important in 20th-century Irish history, and is notable for being one of the few occasions since the English Civil War in which elements of the British military openly intervened in politics. It is widely thought of as a mutiny, though no orders actually given were disobeyed.
With Irish Home Rule due to become law in 1914, the British Cabinet contemplated some kind of military action against the unionist Ulster Volunteers who threatened to rebel against it. Many officers, especially those with Irish Protestant connections, of whom the most prominent was Hubert Gough, threatened to resign or accept dismissal rather than obey orders to conduct military operations against the unionists, and were privately encouraged from London by senior officers including Henry Wilson.
Although the Cabinet issued a document claiming that the issue had been a misunderstanding, Secretary of State for War J. E. B. Seely and Chief of the Imperial General Staff (CIGS) Field Marshal Sir John French were forced to resign after amending it to promise that the British Army would not be used against the Ulster loyalists.
The event contributed both to unionist confidence and to the growing Irish nationalist movement, convincing Irish nationalists that they could not expect support from the British Army in Ireland.