While it might seem inconceivable ten years ago, Japan’s Self-Defense Forces (SDF) now routinely conducts joint military exercises with European powers in the Indo-Pacific. Many of these exercises mark historic occasions where European forces train on Japanese territory and airspace for the first time ever.
Exercises now span different war-fighting domains, from maritime (France-Japan
Oguri-Verny) to land (UK-Japan
Vigilant Isles) and air (UK-Japan
Guardian North; Germany-Japan
Nippon Skies, Italy-Japan
Rising Sun, France-Japan as part of
Pegase 23). The SDF even trains on European territory in the Indo-Pacific: France-Japan
Brunet-Takamori 2023 was held for the first time in New Caledonia.
The rationale for European military exercises with Japan suggests growing strategic alignment, and private business entities in Japan may find opportunities providing logistical services for European assets increasingly deployed to the region.
Background
Japan’s defense engagement with Europe has grown steadily over the past decade. The United Kingdom (UK) and Japan signed a landmark joint security declaration in 2017, leading to more regular combined military exercises. France, a self-declared “resident power”, released the first Indo-Pacific strategy document by a European state in 2018, followed by Dutch and German “guidelines” in 2020 and then the UK’s 2021 Integrated Review, unveiling its Indo-Pacific “tilt”.
Although European military engagements with Japan predate these documents, as high-level political declarations they injected momentum. In August 2024 alone, ports in Japan were busy hosting Italian aircraft carrier
Cavour and frigate
Alpino, Germany’s
Baden-Württemberg frigate and
Frankfurt am Main replenishment supply ship and French frigate
Bretagne. Britain’s forward-deployed offshore patrol vessels (OPV)
Spey and
Tamar routinely make port calls in Yokosuka and Yokohama [1].
Port call of Italy’s aircraft carrier Cavour to Japan’s Yokosuka naval base where Japanese naval and air force officers were invited to observe Italian F-35B carrier operations, August 2024
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Image Source: Headquarters Yokosuka District, Japan Maritime Self-Defense Force】
https://x.com/jmsdf_yrh/status/1828228124246712807/photo/1
Europe is also projecting air power to the region. Japan’s Air Self Defense Force (ASDF) held its first-ever bilateral exercise Guardian North 16 with Britain’s Royal Air Force in 2016 in Japanese airspace. French and German fighter aircraft have since notched similar historic firsts.
The German Air Force-led deployment to the Indo-Pacific called Pacific Skies 2024 was in fact the largest-ever air exercise held jointly by France, Germany and Spain. The Bundeswehr explained that “through joint training, the partners will increase their operational capability so that in an emergency they will be able to enforce the principles of a rules-based international order” [2]. The ASDF framed the European fighters’ visit in terms of how “The security of Euro-Atlantic and Indo-Pacific are inseparable” [3].
These statements indicate that a key rationale for increased European military exercises with Japan lies in a shared desire to uphold the rules-based international system from challengers such as Russia, North Korea and China.
European Assets Deployed
European warships of various classes have exercised with or docked in Japan. These range from aircraft carriers and amphibious assault ships, replenishment supply ships, destroyers and frigates, to smaller OPVs and survey vessels. Naval aviation assets embarked include helicopters, F-35 stealth fighters, Harrier jump jets and drones. The UK Royal Navy has deployed the whole spectrum of warships outlined above to Japan, from the
Queen Elizabeth aircraft carrier leading Carrier Strike Group 21 (CSG21) to the
Enterprise survey ship. The regularity of French frigates visiting Japan was highlighted when in April 2023 the
Prairial arrived, followed shortly by the
Lorraine in May.
European air forces also increasingly conduct exercises in the Indo-Pacific. Afore-mentioned
Pacific Skies 24 comprised a large fleet of 48 European aircraft including Eurofighter Typhoon jets, Tornado multi-purpose combat aircraft, Rafale fighter aircraft, A400M Atlas transports, A330 MRTT (Multi-Role Tanker Transport) aircraft and light utility helicopters. Of these, three Eurofighters exercised with four ASDF F-15 interceptors around Chitose Air Base in the first-ever Japan-Germany bilateral exercise
Nippon Skies. France’s
Pegase 23,
subtitled “
Mass Deployment”, indicates the desire to rapidly deploy significant numbers of aircraft, numbering 19 in total (10 Rafale, 5 A330 MRTT Phénix and 4 A400M Atlas) [4]. Rafale fighters flew with ASDF at Nyutabaru Airbase for the first bilateral Japan-France air exercise.
Chief of the German Air Force Lt. Gen. Ingo Gerhartz (left) with Commander of the Japan Air Defense Command Lt. Gen. Yasuhiko Suzuki (right) at a press conference in July, 2024 for the Japan-Germany Nippon Skies exercise at Chitose Airbase featuring four Japanese F-15s, three German EF2000 Eurofighters and two German A400M transport aircraft
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Image Source: Japan Ministry of Defense】
https://www.mod.go.jp/asdf/news/uploads/docs/20240802e.pdf
Japan’s ground exercises with the British (
Vigilant Isles) and French Armies (
ARC-21 and
Brunet-Takamori) have featured contingents ranging from dozens to roughly two hundred troops drawn in the past from units such as the UK’s 1 Gurkha Rifles, 3 SCOTs, 1
st Regiment Royal Horse Artillery, Honourable Artillery Company and the French Foreign Legion. The German Army is expected to hold its first land exercise in Japan from 2025.
Reciprocal Access Agreements (RAA) and Logistical Business Opportunities
Legal documents that simplify procedures for a visiting partner’s military forces on joint exercises have been key enablers of Japan-Europe military exercises. Japan’s Reciprocal Access Agreement (RAA) with the UK was its first with a European partner; another being negotiated with France is expected to conclude within fiscal year 2024/25. Japan’s other signed RAAs so far are with Australia and the Philippines.
The detailed text of RAA agreements usually covers legal and consular issues such as driving licenses and cases of injury or death [5]. Documents issued by the Japanese government suggest that the expected increased regularity and scale of exercises with RAA partner countries such as the UK and Australia may also confer business opportunities for Japanese firms [6].
As BAE Systems has noted on the CSG21 mission to the Indo-Pacific, “Any long deployment will involve unplanned repairs and maintenance” and an array of tasks such as “co-ordination of maintenance planning, the provision of essential materials and other resources, and liaison with government officials and local shipyards, for the entire group, both ships and aircraft” [7].
Likewise, Airbus highlighted how
Pacific Skies 24 was a “huge logistical challenge for everyone involved and a unique opportunity to learn and improve the support we provide to our customers” [8].
While BAE Systems and Airbus technical teams were the first line of contact supporting such deployments, Japanese vendors may find opportunities in entering the long supply chain necessary to sustain European deployments. These opportunities range from fresh food, medical supplies, petroleum, oils and lubricants (POL) used by naval vessels, and jet fuel, to repairs and maintenance work.
As for ship and aircraft maintenance, in 2024, Japan Marine United in Yokosuka conducted what was described as “defect rectification” repairs for HMS
Spey [9].
HMS Spey, which received “the support of Japan Marine United in Yokosuka” that enabled the ship to be “back out on the high seas undertaking vital training for the Ship’s Co.”
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Image Source: HMS Spey, Royal Navy】
https://x.com/HMS_Spey/status/1805490332290765014
Meanwhile, Sumitomo Heavy Industries Marine & Engineering holds a Master Ship Repair Agreement (MSRA) [10] with the US Navy, expertise that can also be relevant to European navies. Sasebo Heavy Industries has done repair work for MSDF destroyers and missile boats, and similar services could also be offered for European vessels docking in Sasebo. Finally, MRO Japan is contracted to carry out aircraft water washing work for SDF aircraft stationed at Naha Air Base [11], which European aircraft may also require.
Conclusion
Japan’s military exercises with Europe are set to increase, both in scale and frequency. The operational dimensions such as assets deployed and exercise content certainly deserve closer attention. With RAAs facilitating more regular exercises, the time may well be ripe for Japanese firms to support the logistics supply chains necessary to sustain these long-range deployments from Europe.
【Notes】
[1]The Royal Navy’s River-class Batch 2 OPVs deployed to the Indo-Pacific are versatile ships built for endurance and have supported regional partners with anti-smuggling, fishery protection, humanitarian assistance/disaster relief, border patrol and counter terrorism operations. Displacing 2000 tonnes with a top speed of 24 knots, they feature a flight deck capable of operating Merlin and Wildcat helicopters. Typically, a Batch 2 OPV can accommodate a crew of up to 58 including Royal Marine Commandos. See “River-class Batch 2 OPV ‘HMS Tamar’ Commissioned with Royal Navy”,
Naval News, 9 June 2020,
https://www.navalnews.com/naval-news/2020/06/river-class-batch-2-opv-hms-tamar-commissioned-with-royal-navy/. Also see Royal Navy, “River Class”,
https://www.royalnavy.mod.uk/equipment/ships/river-class
[2] Bundeswehr, Pacific Skies 24: One deployment, Five Exercises,
https://www.bundeswehr.de/en/organization/german-air-force/pacific-skies-24-