It is also the site of the stone frigate HMS Hibernia, Headquarters of the Royal Naval Reserve in Northern Ireland.

[3] In early 1970, the barracks also became home to 39 Infantry Brigade[4] and provided the headquarters for the Ulster Defence Regiment.

[5] The brigade, as 39 Airportable Brigade, was involved in The Troubles in Northern Ireland, eventually taking on responsibility under HQ Northern Ireland for an area including Belfast and the eastern side of the province, but excluding the South Armagh border region.

[7] On 7 October 1996 the Provisional Irish Republican Army penetrated the heavily fortified base to detonate two car bombs.

It was commissioned in 2009 to replace the C-class cruiser HMS Caroline as the training establishment for the RNR in Northern Ireland,[11] Hibernia is located within Thiepval Barracks.