|Owner||Ministry of Defence|
|Built for||War Office|
|Occupants||38th (Irish) Brigade|
The barracks were built of brick in 1940. They are named after the village of Thiepval in Northern France, an important site in the Battle of the Somme and site of the Thiepval Memorial to the Missing of the Somme.
From 1954 the barracks contained the operational headquarters of No 31 Belfast Group Royal Observer Corps who operated from a protected nuclear bunker on Knox Road within Thiepval Barracks. Converted from a 1940s anti-aircraft operations room (AAOR) the bunker would support over one hundred ROC volunteers and a ten-man United Kingdom Warning and Monitoring Organisation warning team responsible for the famous four-minute warning in the event of a nuclear strike on the UK. The ROC would also detect radioactive fallout from the nuclear bursts and warn the public of approaching fallout. The two organisations were stood down at the end of the Cold War.
In early 1970 the barracks also became home to 39 Infantry Brigade and provided the headquarters for the Ulster Defence Regiment. 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. From September 1970, it was commanded by (then) Brigadier Frank Kitson.
On 7 October 1996 the Provisional Irish Republican Army penetrated the heavily fortified base to detonate two car bombs. The first detonated at 15:35 GMT followed by the second around ten minutes later close to the base's medical facilities where victims were gathering. Warrant Officer James Bradwell (43) was killed and 21 soldiers and 10 civilians were injured. This bombing was the first major attack on a military base since the ending of the IRA's ceasefire on 9 February 1996 when it exploded a device in London's Docklands.
The 39 Infantry Brigade took on some units from 3 Brigade when that brigade was disbanded on 1 September 2004. The HQ 8 Infantry Brigade based in Shackleton Barracks, Ballykelly, County Londonderry was disbanded and handed over responsibility to HQ 39 Infantry Brigade at Thiepval Barracks on 1 September 2006.
The barracks remain home to 38th (Irish) Brigade.
- Alan McKibbin (1 March 1956). Army Estimates, 1956–57 (Speech). Belfast East. Retrieved 31 March 2014.
- "Thiepval Memorial". Commonwealth War Graves Commission. Retrieved 14 November 2012.
- "The Royal Observer Corps 1954-1991". Ulster Aviation Society. Retrieved 31 March 2014.
- "Shackleton Barracks Ballykelly to Close". sandes.org.uk. 26 June 2006. Archived from the original on 4 October 2011. Retrieved 7 April 2019.
- Potter 2001, p. 24.
- "Bloody Sunday Inquiry website—Statement of General Sir Frank Kitson" (PDF). Archived from the original (PDF) on 10 February 2010. Retrieved 28 May 2008.
- Vassallo, DJ; Taylor, JC; Aldington, DJ; Finnegan, AP (1997). "Shattered illusions--the Thiepval Barracks bombing, 7 October 1996". Journal of the Royal Army Medical Corps. 143 (1): 5–11. doi:10.1136/jramc-143-01-02. ISSN 0035-8665. PMID 9089545.
- "House of Commons Hansard Ministerial Statements for 10 May 2006 (pt 0032)". publications.parliament.uk. 10 May 2006. Archived from the original on 13 March 2007. Retrieved 7 April 2019.
- "The British Army - 38 (Irish) Brigade". army.mod.uk. 12 December 2017. Archived from the original on 13 December 2017. Retrieved 7 April 2019.