This volunteer-run museum tells the story of the Royal Monmouthshire Royal Engineers (Militia) - from the starting point of a muster in 1539 - in the reign of Henry VIII. This was before firearms were in general use - and before there was a Regular Army.  Over the years it became a Militia regiment, officered by the local aristocracy, to maintain law and order within the county. But in the 19th century new police forces took over these duties, and the Regiment, disillusioned and hoping to serve abroad, switched to a more useful role in the Royal Engineers Reserve. The Double Royal title soon followed. It is now in the Territorial Army - is the only regiment to have survived from the Militia - and is the Senior Regiment of the Reserve Army.


The museum’s display focuses on the Militia system and the Regiment’s links with the powerful Dukes of Beaufort, the local gentry, and Monmouth town.  The Regimental Colours and the Freedoms of towns are on view, and exhibits recount the Regiment’s service in the Militia and the Boer War, and in the two World Wars, and more recent conflicts. Archaeological artefacts illustrate the earliest defences of Monmouth - and a small section deals with Henry V, the victor of Agincourt, who was born in Monmouth Castle in 1387. Mine clearance, the Home Front and Women’s roles, and HMS Monmouth are also featured.

The Castle and Regimental Museum is housed in a 19th century barrack wing attached to Great Castle House, within the precincts of the old Monmouth Castle. It opened to the public in 1989, and has received a Prince of Wales Award for its contribution to the culture of Monmouth.  It is Accredited by the Arts Council.  Admission is free - donations are welcomed.

Royal Engineers Museum – Chatham

Army Museums Ogilby Trust

The Firing Line – Cardiff