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Campaign

NATO forward presence on the eastern flank

The programme under which NATO has kept multinational combat formations on the territory of its eastern Allies since 2017, from four battalions to nine formations from the Baltic to the Black Sea.

since July 2016 Alliance command and decision

Ongoing
Assessed as of
2026-09
Last reviewed
2026-09-21

AssessmentHigh confidence

Context, not targeting. Campaign records describe objectives, participants, phases and outcomes at the level of published analysis; they contain no current positions, force ratios, unit locations or strengths.

Locator — land outline from Natural Earth 110m (public domain); 7 places this record names, at the coordinates the module already publishes. No routes, boundaries, control or activity are drawn.

What this campaign was

Agreed at Warsaw in 2016 as an enhanced presence in the north-east and a tailored presence in the south-east, forward presence doubled after the 2022 invasion and now numbers nine multinational formations in nine host states. Two have scaled to brigade size; NATO calls all nine battlegroups regardless.

Forward presence is the physical answer to the question the module is about: what the Alliance actually has on the ground between the Baltic and the Black Sea, and under whose leadership. It is also the programme that produces the module's most-misread fact — that the formations are called battlegroups regardless of size, so a designation and a scale are two separate claims and neither implies the other.

Confidence: High As of 2026-09Reviewed 2026-09-21

Summary

The Warsaw Summit of July 2016 established an enhanced Forward Presence in the north-east and a tailored Forward Presence in the south-east, which NATO described together as the biggest reinforcement of Alliance collective defence in a generation. Four multinational battlegroups were deployed and fully operational in Estonia, Latvia, Lithuania and Poland by August 2017. After Russia's full-scale invasion, an extraordinary summit on 24 March 2022 agreed four more — in Bulgaria, Hungary, Romania and Slovakia — extending the presence from the Baltic to the Black Sea and roughly doubling the troops on the ground. At Madrid that June Allies agreed to scale beyond battalion size to brigade size where and when required. Latvia became the first host to do so in July 2024 under Canadian framework leadership; Germany began building a permanent brigade in Lithuania from April 2024, inaugurated in May 2025 and due to reach up to 5,000 troops by 2027. The central and south-eastern formations implement the same decision differently, rehearsing rapid scale-up rather than standing at brigade size. NATO established the ninth formation, in Finland under Swedish framework leadership, in June 2026.

Stated objectives

What the participants say. Each entry cites where the position was stated; Vigil records that it was made, not that it is true.

  • To provide forces that are multinational and present at all times in the host nations, operating in concert with national home defence forces, provided by framework nations and other contributing Allies on a voluntary, fully sustainable and rotational basis.

    as of 2026-06-17 Sources: NATO official texts and summit declarations

    NATO's own description of the Forward Land Forces.

Assessed objectives

Vigil's reading, graded. Kept structurally apart from stated positions so an assessment can never be published as someone's declared aim.

  • The programme's defining property is multinationality rather than mass: a formation manned by several Allies makes an attack on it an attack on all of them in the most literal sense available short of Article 5 itself.

    Confidence: High Sources: NATO official texts and summit declarations

  • Its exposure is the mirror image. Provision is voluntary and rotational, so continuity is a standing national decision by each contributing Ally rather than a fixed alliance asset.

    Confidence: Moderate Sources: NATO official texts and summit declarations

Primary forces

Supporting & external

  • Allied Command Operations Supporting force · Confidence: High · as of 2026-06-17

    NATO states that all nine are "integrated into NATO's command structure"; integration is the alliance's own word and is recorded at that strength.

Phases

2024 – 2026 Confidence: High

Scale-up and the ninth formation

Latvia scales to a brigade and Germany begins a permanent brigade in Lithuania; Spain takes the Slovak battlegroup; Sweden announces and then takes the framework role in Finland, where NATO establishes the ninth formation in June 2026.

Sources: NATO official texts and summit declarations

Outcome and present status

Nine formations in nine host states as of June 2026, two of them at brigade scale and one of those in a base NATO calls permanent. The programme is still adding and adjusting: the corps layer above two of the formations changed hands in June 2026, and the ninth formation's garrison has not been published.

Observed adaptations

  • The scale-up decision has been implemented in three different ways: a standing brigade with a rotational framework nation (Latvia), a permanent national base being built to brigade strength (Lithuania), and rehearsed rapid reinforcement to brigade level (Slovakia, Bulgaria, Romania).

    as of 2026-09-21 Confidence: High Sources: NATO official texts and summit declarations

Political implications

Nine host states, roughly two dozen contributing Allies and nine framework nations make the programme a standing test of alliance cohesion, renewed every rotation.

Military implications

Forward presence provides in-place multinational forces; the plans they serve assume reinforcement, which makes mobility and host-nation support the binding constraint rather than the size of the formations themselves.

What remains unknown

  • NATO publishes no troop numbers, unit composition or readiness for any of the nine, and none is carried on any record here.
  • Which regional defence plan each formation serves is not published, and the module refuses to infer it.

Readings the evidence also supports

  • The growth from four formations to nine can be read as a change of scale within one concept, or as two different concepts sharing a name — tripwire reassurance in the north-east since 2017 and plan-serving forward defence since 2022. NATO's own language supports the first reading; the change in what the forces are for supports the second.

Listed because the record's own assessment is not the only one its sources permit — not as a hedge on the assessment above.

What to watch

Whether further hosts move to brigade scale

Madrid's wording is "where and when required". Two hosts have; the others rehearse it. A third standing brigade would be a change in the programme's shape.

Whether the Finland formation's garrison is published

NATO has published no garrison, lead unit or headquarters for the ninth formation. Publication would close the module's most conspicuous gap.

Watch questions this campaign bears on

Standing analytical questions whose evidence runs through this campaign, each with its latest review. Derived from the Watch object, never restated here.

See the force running this in Explore Interactive: select this record and follow what connects to it.

Sensitivity: public-contextual Confidence: High Sources: NATO official texts and summit declarations Methodology Corrections

Assessed as of — 2026-09 Last reviewed — 2026-09-21

Connected records

23 records that this campaign names, or that name it — every one an explicit reference in a published record, nothing inferred from subject matter.