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Royal Hospital Kilmainham
Dublin 8, D08 FW31, Ireland
Phone +353 1 6129900

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HERITAGE TRAILAdjutant General’s Office

Discover the captivating history of the Royal Hospital Kilmainham/IMMA through the immersive IMMA Heritage Trail. The IMMA Heritage Trail has grown out of the success of our recent podcast series of the PAST FUTURES, co-hosted by IMMA's esteemed Heritage Researcher, Barry Kehoe, and heritage enthusiast Stephen Taylor. The trail takes you on a journey through 16 unique stops dotted around the IMMA grounds.  

Adjutant General’s Office

In 1775 the Role of Master of the Royal Hospital and Commander of the British Forces in Ireland were amalgamated making the Royal Hospital Kilmainham the centre of British Military Command in Ireland. The Adjutant Generals building was built by architect Francis Johnston to accommodate the administrative offices of the Command. The Adjutant was the chief administrative officer reporting to the Commander of the forces, responsible for the administration and preservation of personnel records. The word General in the title Adjutant General refers to the General staff of the army rather than the rank of the Adjutant. For example in 1835 when the Master was General Lord Seaton, his Adjutant was Captain. J Chadwick. General Lord Roberts, came from a prominent Waterford family and was Master of the Royal Hospital Kilmainham from 1896 to 1901.

Army and Navy Illustrated, 1896

He was photographed with his adjutant Captain Fielding and his staff officers on the steps of the North Entrance to the great hall. Lord Roberts was a hero of the Victorian Military, he also has a dark legacy as the military leader responsible for the development of the concentration camp for incarcerating civilians. During the Boer war his troops rounded up women and children, families of enemy combatants and imprisoned them after burning them out of their homes. He also imprisoned large numbers of Black South African farmers to prevent them supplying the Boers with food. An estimated 48,000 People died in his camps between July 1901 and Feb 1902.

The British Military unaware that they would be withdrawn from the 26 counties as part of the political solution to the war of independence had plans to convert the Adjutant General Office into the Adjutant General’s residence.



The IMMA Heritage Trail is kindly supported by An Chomhairle Oidhreachta / The Heritage Council and the Office of Public Works. OSI Historic map details are provided courtesy of Tailte Éireann.

Important Notice


We would like to advise our visitors that our Main Reception area is closed for renovation from 22 April until mid-June.  A temporary reception is open on the ground floor next to the original main entrance. While we prepare to open our next exhibition Hilary Heron: A Retrospective on 24 May, there are two exhibitions to see Derry Film & Video Workshop and Self: Determination: Artists Commissions. IMMA’s gardens and café are open to the public.