Until the Act of Union in 1800, the position involved command of the distinct Irish Army of the Kingdom of Ireland.
In January 1876 a ‘Mobilization Scheme for the forces in Great Britain and Ireland’ was published, with the ‘Active Army’ divided into eight army corps based on the District Commands.
4th Corps was to be formed within Irish Command, based in Dublin.
As outlined in a paper published in 1903, III Corps was to be formed in a reconstituted Irish Command, with headquarters at Dublin.
[12] Field Marshal The Duke of Connaught was appointed acting General Officer Commanding-in-Chief (GOCinC) of III Corps in October 1901.