The coalition of the willing stops talking and starts marching: 2,800 troops rehearse for Ukraine in Poland

Two years of summits, now a rehearsal in southeastern Poland

After nearly two years of summits and communiqués, the so-called "coalition of the willing" is moving from theory to practice. London and Paris announced on Tuesday that some 2,800 troops from ten European countries will gather in Poland from 9 to 22 November for Exercise Koalicja, Polish for "coalition", the first major drill of the Multinational Force–Ukraine (MNF-U), the military arm of the coalition.

The announcement came in a joint Franco-British statement, carried widely on 3 November. The main component will unfold around Nowa Deba, a training area in southeastern Poland roughly 100 kilometres from the Ukrainian border. France provides the largest contingent, 1,100 troops, while the United Kingdom sends 300 soldiers from 7 Brigade, the Desert Rats, alongside RAF Typhoons and a Voyager refuelling aircraft. Germany contributes ten officers and up to two A400M transport aircraft for aerial refuelling. Poland, which has consistently said it will not send troops into Ukraine after the war, hosts the exercise and supplies 500 soldiers in logistics and support roles.

Exercise commanders are British Lieutenant General Tom Bateman, who commands the MNF-U, and French General Armel Dirou as his co-lead. An air component will be coordinated from Romania, and Turkey will lead a separate maritime simulation from Istanbul to test procedures for clearing naval mines from Black Sea shipping lanes. Equipment has been arriving in Poland for more than a week.

The exercise ledger: dates, places, troop counts

What is the Multinational Force–Ukraine?

The MNF-U is the military arm of the "coalition of the willing," the grouping of more than 30 countries, France and Britain as co-chairs, that has been drawing up long-term security guarantees for Ukraine since February 2025. The force was stood up in 2025 and has run an operational headquarters in Paris. It is explicitly not a NATO operation, NATO has been informed but is not taking part, and the United States, which has taken part in discussions, is not contributing. Of the coalition's members, around 24 countries have said they would contribute to the force; only those ready on short notice are exercising in Poland.

Why Poland, and why now?

Poland was the obvious host: most military aid to Ukraine transits through its territory, and it holds the depots and supply lines the MNF-U would need. Warsaw agreed to serve as the exercise's logistical rear base at the coalition summit in July. Ukrainian soldiers will also take part in the drills, according to Le Monde. The timing matters because the force's advocates have been under pressure to show, before another European winter, that two years of planning have produced something deployable.

What the exercise will actually test is deliberately modest. There will be no tanks, no heavy weaponry, no show of force with missiles. Le Monde reports the drills centre on the command system, on moving troops and equipment across European borders, and on making different countries' communications interoperable. Counter-drone operations, drones against drones, are expected to be a major component. The official line, repeated by both commanders and Defence Secretary Wes Streeting, is that Koalicja tests "the speed and efficiency at which several nations can deploy forces on land, sea and air to support Ukraine once hostilities have finished."

What it is not is equally defined: not an offensive force, not a peacekeeping mission, not a ceasefire-monitoring mission. The force would enter Ukraine only after fighting stops and only if Kyiv asks. Western officials declined to spell out the rules of engagement if the force were attacked, beyond saying it would be able to defend itself.

The figures that still do not add up

The headline number is the least settled fact of the exercise. London and Paris say 2,800 troops; Le Monde reports "almost 3,000"; Polish outlet RMF24 reported nearly 5,000, including almost 2,000 Poles; a figure a defence ministry lieutenant colonel explained by saying the official count covers only foreign troops. The participant list also shifts between ten countries at the main site and eleven once Turkey's maritime simulation is counted. None of this is fatal to the exercise, but it means the public record of its scale is approximate.

Nor do we know what comes after 22 November. The exercise's full designation, "Koalicja 2026.2," suggests a series; but no further editions have been announced. The final makeup of any deployed force remains undeclared; Western officials would not comment on which of the 24 volunteering countries would actually send troops to Ukraine, in what numbers, or under what funding. And the fundamental unknown is the trigger itself: the force exists to deploy after a ceasefire, yet Moscow shows no appetite for one, and last year President Vladimir Putin said any foreign contingent deployed during hostilities would be a legitimate target.

Europe's first post-American security rehearsal

Koalicja matters less as a military event than as a political one. It is the first time European states are rehearsing, at scale and under a European command structure, the kind of post-war security guarantee that Washington has declined to lead. The exercise is deliberately built to survive American absence: no NATO command, no US troops, a headquarters moving from Paris to London. That is the point the organisers want recorded; that Europe can credibly promise Ukraine a future security architecture even while Washington's own role in Ukraine's guarantees remains, in Le Monde's words, "highly uncertain."

It also matters as a message to two audiences at once. To Kyiv, the signal is commitment: the reassurance force is a real organisation with a commander, a staff and an exercise programme, not a summit declaration. To Moscow, the signal is deterrence wrapped in restraint; a force that explicitly renounces offensive missions and peacekeeping precisely to deny Russia the pretext of an advancing threat, while still demonstrating that a European deployment could materialise quickly if the war ends. With the war's longest truce having just expired without extension, that second message lands in an atmosphere of renewed fragility.

Deterrence or dress rehearsal: reading the signal

The honest reading of Koalicja is that it is both. As a military instrument, 2,800 troops testing command-and-control and border-crossing logistics is the necessary, unglamorous plumbing of any future deployment; the kind of work that determines whether a force can actually arrive rather than merely promise. The emphasis on moving people, food, fuel and spare parts across European borders, plus counter-drone drills and a Black Sea mine-clearing simulation, shows planners thinking about the real constraints of a post-war mission: corridors, communications and commercial shipping.

As a political signal, the exercise's architecture is its message. A European force, outside NATO, without the United States, rehearsing from Romania to Istanbul, is an answer to the question Europe has been asked since 2024: what security can you offer Ukraine on your own? The answer Koalicja gives is: logistics, command, and speed of assembly, the things that make a guarantee credible, while carefully withholding anything that could be read as offensive. That restraint is not weakness; it is the condition under which a post-war deployment might be negotiated without becoming a casus belli.

The weakness of the signal is the trigger problem. A deterrent force rehearsed for a peace that does not exist can look, from Moscow, like provocation without consequence; and from Kyiv, like a promise denominated in a currency that has not yet been minted. The Black Sea mine-clearing dimension, led by Turkey, is the most economically concrete part of the exercise: reopening commercial lanes would change the war's economic geography overnight. It is also the part most hostage to a ceasefire that nobody can currently produce.

What the Black Sea and the borders stand to gain

The second-order effects of Koalicja will outlive its two weeks. First, standardisation: if ten countries' communications and logistics procedures are genuinely harmonised in Poland, the marginal cost of every future European deployment falls; the exercise builds an interoperable coalition whether or not Ukraine is ever the destination. Second, the headquarters move from Paris to London cements an institutional fact: the MNF-U becomes a standing Anglo-French military structure, which survives beyond any single exercise and gives future governments a vehicle to inherit rather than a project to launch.

Third, the Black Sea. A Turkey-led mine-clearing rehearsal inside a Ukraine support exercise quietly widens the coalition's geography to the maritime economy, grain, energy, insurance, that the war has distorted. If a ceasefire ever reopens Ukrainian ports, the mine-clearing playbook is ready; if not, Turkey's role still anchors a non-Western, NATO-member participant in the force, which complicates any Russian narrative of a purely anti-Russian Western bloc. Fourth, Germany's participation, officers and A400M refuellers, deepens Berlin's military entanglement in the Ukraine file at a moment when sanctions policy shows Europe willing to act independently of Washington's rhythm.

From Nowa Deba to a decision point in Kyiv

The immediate next step is the exercise itself: 9 November, troops on the move around Nowa Deba, counter-drone drills overhead, and the air component coordinated from Romania. Watch for two things during those two weeks; whether the counter-drone component produces any published lessons (it is the war's fastest-moving capability) and whether any additional countries announce themselves for a "Koalicja 2026.3."

Will the coalition exercise again?

The designation "Koalicja 2026.2" strongly suggests so, though nothing has been confirmed. After 22 November, the MNF-U headquarters relocates from Paris to London; an administrative move with political meaning, since London will then own the force's daily planning. The longer horizon is the one nobody controls: a ceasefire that would convert the rehearsal into a deployment. Russia has shown no sign of wanting to end its war, and the force's own doctrine says it waits. Koalicja proves Europe can assemble the answer; the question it answers has not yet been asked.