Combined Joint Expeditionary Force

Combined Joint Expeditionary Force
Unit name	Combined Joint Expeditionary Force
Dates	2010–present
Country	France and United Kingdom
Type	Combined expeditionary force
Role	Bilateral rapid deployment
Garrison	North Atlantic Treaty Organization theatres and national bases

Combined Joint Expeditionary Force

The Combined Joint Expeditionary Force is a bilateral France–United Kingdom expeditionary military arrangement established to enable rapid joint deployment, crisis response, and interoperability across land, maritime, air, and special operations domains. It was created in the aftermath of policy initiatives including the Lancaster House Treaties and draws on capabilities from the British Armed Forces, the French Armed Forces, NATO assets, and European partners to operate in multinational crises such as humanitarian relief, non‑combatant evacuation, and high‑intensity contingencies.

Background and formation

The force traces its origins to diplomatic and defence accords including the Lancaster House Treaties, the Saint-Malo Declaration, and bilateral strategic dialogues between leaders such as David Cameron and Nicolas Sarkozy. Formation was influenced by historical cooperation exemplified by the Entente Cordiale, the Battle of Normandy coalition legacy, and interoperability efforts within frameworks like NATO and the European Union Common Security and Defence Policy. Political drivers included responses to operations such as Operation Telic, Operation Harmattan, and the humanitarian crises after the 2004 Indian Ocean earthquake and tsunami. The initiative sought to reconcile force structure changes after defence reviews like the UK Strategic Defence and Security Review 2010 and the Livre blanc sur la défense et la sécurité nationale (2008).

Structure and capabilities

The Combined Joint Expeditionary Force is configured as a scalable headquarters with tailored force packages drawn from the British Army, the French Army, the Royal Navy, the French Navy, the Royal Air Force, and the French Air and Space Force. It integrates elements from units such as the 1st (UK) Division, the 1er Division (France), Royal Marines, 1er RPIMa, and special operations forces comparable to the Special Air Service and Commandement des Opérations Spéciales. Maritime components draw on carrier strike groups including assets akin to HMS Queen Elizabeth and PA Charles de Gaulle, amphibious ships like HMS Albion and Mistral-class amphibious assault ship, and frigates patterned after Type 45 destroyer and Horizon-class frigate. Air power is provided through platforms like Eurofighter Typhoon, Dassault Rafale, Lockheed C-130 Hercules, A400M Atlas, aerial refuellers such as Voyager (aircraft), and surveillance assets including E-3 Sentry and E-2 Hawkeye. Logistic and intelligence support leverages systems akin to SATCOM, unmanned platforms in the vein of MQ-9 Reaper, and cyber capabilities referenced in national doctrines like the UK National Cyber Security Centre and Agence nationale de la sécurité des systèmes d'information.

Operational history

Operationally, the force has been exercised across scenarios from stabilization similar to Operation Serval and Operation Sangaris to maritime security akin to Operation Atalanta and Operation Ellamy. Deployments have included humanitarian assistance reminiscent of responses to the 2010 Haiti earthquake and evacuation operations comparable to Operation Pitting. Crisis management drills referenced collective experiences from Libya (2011) and contingency planning influenced by the Syrian civil war and the Mali conflict (2012-present). The CJEF framework has also supported NATO‑aligned missions in the Baltic states and partnered operations with actors such as United States, Canada, Germany, Spain, Italy, Poland, Sweden, Norway, Netherlands, Belgium, Portugal, Greece, Turkey, Romania, Estonia, Latvia, Lithuania, Denmark, and Finland.

Command and multinational cooperation

Command arrangements emphasize a deployable joint headquarters able to assume roles under NATO command structures such as Supreme Allied Commander Europe and coordinate with EU mechanisms like the European Defence Agency and Civil Protection Mechanism. Leadership has involved senior officers who previously served in multinational staffs including the Allied Rapid Reaction Corps, Joint Expeditionary Force (Maritime), and staff colleges like the Royal College of Defence Studies and École militaire. Cooperation extends to liaison with international organizations such as the United Nations Department of Peace Operations, North Atlantic Council, and regional partners including the African Union and Economic Community of West African States.

Exercises and interoperability

CJEF interoperability has been validated through multinational exercises resembling Joint Warrior, Exercice BARNUM, Exercise Trident Juncture, Exercise Cold Response, Exercise Steadfast Defender, and bilateral rehearsals that draw on doctrine from the North Atlantic Treaty Organization and interoperability standards like STANAGs. Training activities involve amphibious manoeuvres inspired by Operation Ocean Shield and combined air–land exercises similar to Red Flag and Maple Arch, coordinated with logistics exercises such as Exercise LOGEX and cyber resilience drills reflecting practices from Locked Shields. Interoperability focuses on command, control, communications, computers, intelligence, surveillance and reconnaissance (C4ISR), medical evacuation comparable to MEDEVAC procedures, and multinational rules of engagement derived from protocols used in UN peacekeeping and NATO operations.

Strategic significance and assessments

Analysts assess the Combined Joint Expeditionary Force as a key binational capability that projects Franco‑British influence, strengthens deterrence in conjunction with NATO, and provides a rapid response option distinct from larger coalition operations like those led by United States Central Command or EU battlegroups. Strategic debates reference balance between national sovereignty and burden sharing, lessons from past campaigns such as Iraq War (2003) and Libya intervention (2011), and implications for defence industrial cooperation involving firms like BAE Systems, Dassault Aviation, Thales Group, MBDA, and Naval Group. Evaluations from think tanks and parliamentary committees compare CJEF utility to mechanisms such as the VJTF and the Joint Expeditionary Force (JEF), noting contributions to crisis response, partnership building with NATO and EU partners, and adaptability to hybrid threats exemplified by incidents like the Crimea Crisis (2014) and contemporary security challenges in the Indo-Pacific and Sahel regions.

Category:Military alliances Category:France–United Kingdom relations