The keep is now a regimental museum for the Devonshire Regiment, the Dorset Regiment, the Devonshire and Dorset Regiment, The Dorset Yeomanry, Queen's Own Dorset Yeomanry, The Dorset Militia, The Royal Devon Yeomanry and 94 Field Regiment RA.
The keep is now home to a collection of military artifacts and exhibits from various regiments, including the Devonshire Regiment, the Dorset Regiment, and others like The Dorset Yeomanry and The Royal Devon Yeomanry.