NATO Allied Rapid Reaction Corps

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NATO Allied Rapid Reaction Corps Headquarters Allied Rapid Reaction Corps (HQ ARRC) is a UK based High Readiness NATO Headquarters. It began its journey fighting under Wellington at Waterloo.

Headquarters Allied Rapid Reaction Corps (HQ ARRC) provides NATO with a well-manned, rapidly deployable, flexible HQ that can act as a Joint, Land or Corps HQ for operations and crisis response. Its European, multi-national ethos, combination of cultures and innovation, strong professional reputation in NATO and proven track record in interoperability are unique among its High Readiness Force (Land) (HRF(L)) peers.

2017 marked the 25th anniversary as HQ ARRC and 200th Anniversary of its antecedent, 1 Corps. Throughout its history the Corps has played a key role in international events. In the First World War it fought in France and Belgium, and in the Second World War it was responsible for two of the D-Day beachheads and a number of airborne assaults, as part of the Allied re-entry into Europe. Throughout the Cold War 1 (BR) Corps was the UK’s contribution to NATO’s defence against the Soviet Union. With the end of the Cold War, HQ ARRC emerged as the first NATO Rapid Reaction Land Force Headquarters. Such was the success of the structure developed by ARRC, in 2002 it was used as the model for the development of other HRF(L) Headquarters. From 1994 until 2010, the ARRC was based in Rheindahlen, Germany. In 2010 the ARRC moved to its current location at, Imjin Barracks, Gloucester. In line with its operational ethos, ARRC commanded the Land element of NATO's first ever deployment as part of the Implementation Force (IFOR) operation in Bosnia in 1995. It deployed again as the headquarters commanding Land Forces during the Kosovo War in 1999. Other operations have included the formation of the International Security Assistance Force (ISAF) in Afghanistan in 2006 and as ISAF Joint Command in 2011. Today, the ARRC is the UK’s largest deployable Land HQ. It remains the UK’s contribution to NATO’s HRF(L) structure and is unique amongst all other HRF(L)s by falling under the direct Operational Command of Supreme Allied Commander, Europe (SACEUR) during peacetime. Although HQ ARRC’s ‘framework nation’ is the United Kingdom, comprising approximately sixty percent of the overall staff, the ARRC is fully multinational in nature and organisation, with twenty-one NATO and Partner Nations overall contributing personnel. A number of other nations will become part of the ARRC before the end of 2017.

30/10/2026

🏥 Army medics take hospital care underground

British Army medics from 2nd Medical Group have been treating simulated casualties in buildings and basements on Salisbury Plain as they prepare for the modern battlefield.

By spreading hospital departments across separate locations, they aim to make treatment areas harder to detect and keep caring for wounded soldiers if one part is hit.

“We can no longer have a large, easily visible medical treatment facility that can easily be targeted.”

The medics demonstrated the approach to senior NATO officers during Exercise Bellatorian Cyclone. 2nd Medical Group is one of ARRC’s specialist Corps Troops formations.

👉 Read the full story: https://arrc.nato.int/news/army-medics-test-new-hospital.aspx

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29 Ekim Cumhuriyet Bayramı Kutlu Olsun 🇹🇷Today we celebrate Türkiye’s Day in honour of the declaration of the Republic i...
29/10/2026

29 Ekim Cumhuriyet Bayramı Kutlu Olsun 🇹🇷

Today we celebrate Türkiye’s Day in honour of the declaration of the Republic in 1923. Your contributions to NATO operations exemplify true dedication and professionalism.

Together, we stand united for a safer world.

Vše nejlepší ke Dni vzniku samostatného státu.Today, we celebrate the National Day of our Czech allies & their invaluabl...
28/10/2026

Vše nejlepší ke Dni vzniku samostatného státu.

Today, we celebrate the National Day of our Czech allies & their invaluable contributions to NATO. Together, we stand strong in our commitment to peace & security.

¡Feliz Día de la Fiesta Nacional! On this National Day, we recognise Spain’s vital role in NATO's defence strategies. To...
12/10/2026

¡Feliz Día de la Fiesta Nacional!
On this National Day, we recognise Spain’s vital role in NATO's defence strategies. Together, we strive for peace and security worldwide.

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09/10/2026

💪 Corps blimey! - Well done to teams across the Corps for completing the British Army’s Cambrian Patrol in Wales this week, NATO’s toughest patrolling test.

📸 Cpl Paul Squires RLC | British Army

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Heute feiern wir die Deutsche Einheit!Today, we celebrate the 35th Day of German Unity.As a valued NATO ally, Germany's ...
03/10/2026

Heute feiern wir die Deutsche Einheit!

Today, we celebrate the 35th Day of German Unity.
As a valued NATO ally, Germany's commitment to collective defence continues to strengthen our Alliance.

👑 Royal approval - The Princess Royal visits ARRCHer Royal Highness The Princess Royal visited the Allied Rapid Reaction...
15/09/2026

👑 Royal approval - The Princess Royal visits ARRC

Her Royal Highness The Princess Royal visited the Allied Rapid Reaction Corps at Imjin Barracks in Gloucester, the UK’s largest NATO base, in her capacity as Colonel-in-Chief, Intelligence Corps.

The Princess Royal, sister of King Charles III, met Intelligence Corps personnel supporting ARRC and NATO operations, and heard about their work across adversary analysis, targeting, data exploitation, counter-intelligence and geographic analysis.

ARRC sits at the heart of the British Army’s contribution to NATO, commanding its 1st and 3rd (UK) Divisions.

🔗 Full story bit.ly/RoyalARRC

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  GLOUCESTER, U.K. - Her Royal Highness The Princess Royal visited the Allied Rapid Reaction Corps at Imjin Barracks, the...

04/09/2026
ARRC Hosts Insightful Study Day with CHACR and NATO GuestsThe Headquarters Allied Rapid Reaction Corps (ARRC) recently h...
24/07/2026

ARRC Hosts Insightful Study Day with CHACR and NATO Guests

The Headquarters Allied Rapid Reaction Corps (ARRC) recently held a dynamic study day in partnership with The Centre for Historical Analysis & Conflict Research (CHACR). The event was officially opened by Commander ARRC Lt Gen Mike Elviss, who welcomed military commanders from 1st (UK) Division, 3rd (UK) Division, ARRC enabling brigades, specially invited NATO guests, and representatives from Permanent Joint Headquarters (PJHQ).

This collaborative day fostered valuable discussions and shared learning to enhance operational understanding and multinational cooperation.

24/07/2026

HQ ARRC Hosts Insightful Study Day with CHACR and NATO Guests

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Imjin Barracks
Gloucester
GL31HW

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