The United States has pledged fewer guaranteed forces to NATO’s force model and asked European allies and Canada to take up the slack, in a shift a senior NATO official has insisted can be managed without leaving a significant gap in the alliance’s defences, the official has said.

Speaking at a background briefing, the official explained that the NATO force model is the set of forces that the alliance’s Supreme Allied Commander knows he can count on, of assured availability and held at appropriate readiness to respond to missions, activities, operations and contingencies including the alliance’s defence plans, and said the United States had, in line with what it had been signalling for some time, told allies that it would commit fewer guaranteed forces while expecting Europeans to take “a more prominent role in Europe’s conventional defense”, a decision the official tied to the risk of simultaneous conflicts breaking out around the world.

Washington had invited European allies and Canada to step up and replace what it was withdrawing, the official said, a process already under way, with the Supreme Allied Commander now discussing the detail with allies to ensure the change was, in the official’s words, not undermining the credibility of the alliance’s plans, activities and missions.

The reason this need not open a dangerous hole, the official said, was that a great deal of European capability had never been declared to the force model in the first place, with nations holding aircraft such as F-35s back for national tasks or at lower levels of readiness, something the alliance had established through what it called the fifth step of its defence planning process, in which experts assess what allies actually hold in their inventories in real life.

Filling an American slot could therefore be, in the official’s striking phrase, a matter of “a phone call” from one capital offering a capability in place of what the United States had been providing, whether “like for like” with the same system or with something different that delivered the same effect, and while the official cautioned that “not everything can be absolutely replaced”, the small number of capabilities only the United States could provide did not, in this account, make a huge difference set against everything that could be substituted, provided allies actually took the decisions.

The official offered an explanation for why so much had been held back in the first place, noting that while some countries were “completely all in” because their entire defence policy amounted to their NATO contribution, others kept forces for commitments abroad or for national contingencies, a pattern the official suggested applied to France, to the United Kingdom and to Canada, while arguing that such forces, even if reserved for national tasks, would very likely be made available immediately to the Supreme Allied Commander in a collective defence scenario, since to withhold a division while Russia was invading would be meaningless and contrary to the spirit of the alliance.

There was also more flexibility within the force model than was sometimes assumed, the official said, with different levels of commitment meaning that pledging forces did not require pilots to be “in the seat 24/7”, and the official argued that it was better to have genuine assurance that forces would be available on the day a crisis broke than to sustain “a fiction about the assurance of US forces being available when we know they’re not”, with the executability of the plans and the level of risk involved ultimately a military judgement for the Supreme Allied Commander.

Pressed on the capabilities the United States alone brings, the official acknowledged that areas such as command and control, intelligence, surveillance and reconnaissance, deep precision strike and air-to-air refuelling were precisely where Europe needed to improve, describing them as “critical for military superiority”, and said European allies and Canada had to get “a lot more faster” at building them, not because of the American decision but because they had already agreed to do so and were constrained by their own production capacity and the need for greater industrial cooperation.

The official was at pains to separate the force model from the wider capability targets, explaining that allies were being asked to provide the forces needed to fight the plans in a protracted war against a fully reconstituted Russia, the maximum level of effort, of which the force model was only a subset, namely the forces of assured availability at the proper readiness to respond in the first days and weeks of a crisis, and concluded that even with the American reductions there would be no gap in the force model beyond a very few capabilities, as long as allies signed up.

They also made clear that the targets themselves are about to be reworked, explaining that while allies had agreed their capability targets last year and the alliance now had a clear idea of how each planned to meet them, NATO was embarking on a fresh cycle of defence planning in which the plans, and the force requirements that flow from them, would be revised, with intensive political discussions expected in the autumn of 2026 to set the parameters for that cycle and a new set of capability targets to be generated for allies, including the United Kingdom, in the spring that follows.

George Allison
George Allison is the founder and editor of the UK Defence Journal. He holds a degree in Cyber Security from Glasgow Caledonian University and specialises in naval and cyber security topics. George has appeared on national radio and television to provide commentary on defence and security issues. Twitter: @geoallison

11 COMMENTS

  1. ‘…political discussions expected in the autumn of 2026 to set the parameters for that cycle and a new set of capability targets to be generated for allies, including the United Kingdom, in the spring that follows.’

    Remind me…how are we getting on with establishing that Army Corps that we have promised NATO?

    Churchill: Ou est la masse de manoeuvre?

    Gamelin: Aucune!

    France 1940

    • Pretty well by all accounts, below is from the British army website.

      “ The Allied Rapid Reaction Corps (ARRC) is a rapidly deployable, multinational NATO warfighting headquarters. Based at Imjin Barracks in Gloucestershire, UK, it commands over 160,000 troops and acts as the UK’s leading contribution to NATO’s High Readiness Forces.”

      • The sun is long since over the yardarm.

        Try again tomorrow…to actually read the relevant part of the British Army website…

        ‘Under its leading NATO role within UK Defence, ARRC operates as a 3-Star headquarters, in Gloucestershire, with more than 400 permanent staff…’

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  2. I think we would all be alot safer removing all US commitments from NATO planning. If Russia mounted an incursion there is no chance the current administration or any future administration under republican leadership would commit forces.

    Much safer I have the US in NATO politically but not with in the command structure in the same way France as in the past. If we can’t remove the US from the command structure then we need to have a parallel multi national framework based on JEF.

    We should assume we are on our own for European security and hope for Allie’s to come.

    At the same time we should give up any pretence of helping America in the pacific. Let them know that other than maybe “moral” support if they want to get into a scrap with China they are in their own.

    Give the current state or relations it would be political suicide for any British PM or any other European leader to offer support for the US in the pacific short of an invasion on Australia.

  3. ARRC’s *permanently attached units* are probably about 6-7,000 troops as it’s permanent structure has expanded recently. It’s permanent subunits are:
    1st Aviation BCT
    1st RMP Brigade
    1st Signal Brigade
    2 Med Group
    8 Engineer Brigade
    7 AD Group
    104 Brigade

    Most of those used to be under Field Army Troops and got resubordinated so that they don’t have to be task organised if war breaks out.

    ARRC’s *wartime* structure is about 160,000 troops; it’s organic 6-7,000 troops. 3 UK Division, 16AA and 7 Light Mech either as seperate brigades or with 102log as 1 UK division, relevant elements of LSOF and 1-2 NATO divisions attached (Likely the 1st Canadian Division and some independent Brigades from smaller powers like Belgium or Portugal). Exactly what will be assigned to ARRC will vary depending on what happens when War breaks out. But also this is nothing new: If you look back at the 90’s ARRC even then had a peacetime structure and an assumption of what elements of the Field Army will be assigned to it in war. It has not had permanent combat formations assigned to it since it ceased to be 1 (Br) Corps in ’92.

    Peacetime permanent structures are what the command has at all times, and as far as Corps HQ’s go, it’s one of the biggest in Europe. 1 DE/NL consists of only about 400 permanent personnel as it literally is just an HQ, NATO Rapid Deployable Corps (NRDC) has about 1,000. 1 Corps de Armee, has about 300. Multinational Corps South East is probably about 6,000 as it has a multinational brigade assigned to it. But all of these formations during wartime would get significant forces assigned to them.

    The only NATO HQ that has a sizeable permanent force assigned to it is MNCNE (Multinational Corps North East) which has a Estonian Division, a Lithuanian Division, and two composite multinational divisions permanently assigned to it for now. (For now because the Estonian Division and one of the composite divisions are going to 1 DE/NL corps).

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  5. There’s still 2 countries in Europe that require a broad makeup of capabilities, that’s France and the UK as they cannot rely on allies if one of their overseas territories is under threat, the French government seems to understand this , the UK doesn’t. Yes allies are important but no country can build their defence around that assumption. NATO is there but if there was an invasion, does anyone actually trust ALL nations to step up, I certainly wouldn’t, more likely for the UK Australia/Canada/Poland/Scandinavian countries stepping up regardless of NATO.
    Would anyone trust the UK to step up, usually yes but this government? Events of this year have proven otherwise (Cyprus, first drone attack – they didn’t mean it, second attack – we’d better do something, Russia Firing in the channel 15 years ago the UK would be climbing up wall over it – half the navy and Airforce would have been around it, this time again ‘miss understanding’)

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