NATO command structure
Allied Command Operations
NATO's operational strategic command, seated at SHAPE in Mons. Everything the alliance does operationally runs from here.
Coverage · NATO Eastern Flank
Context, not targeting. This atlas describes structure and history. It deliberately excludes current locations, live strength, unit movements and anything operationally sensitive — the content model has no fields for them. Branch depth reflects what can be established from public sources, not the size, capability or importance of a force: a thin branch means a state publishes little, and record counts are never a measure of strength.
Force StructureThe full command tree for each side — who sits under whom, with the subordination of every record stated and graded.FormationsEvery formation as a searchable list, when you know the unit you are looking for rather than where it sits.
Current state
What this atlas holds
Records assessed as of 2026-10
How the forces on each side are organised — formations, lineage and subordination, never locations or strength.
- Published records185As of 2026-10Formations index
- Reviewed profiles178As of 2026-10Formations indexFull or partial profiles that have passed source review.
- Formations57As of 2026-10Formations indexRecords typed as a formation or a special unit; services, commands and groupings are counted above.
- Documented equipment edges47As of 2026-10Formations indexTyped equipment associations graded documented — never quantities.
- Published seats18As of 2026-10Formations indexHeadquarters or garrisons a record states from a published source — the only geography an organisation carries.
- Forces with a stated posture7As of 2026-10Formations indexRecords whose institution states a structural orientation — an arrangement in words, never a place.
- Newest status date2026-10As of 2026-10Formations indexThe most recent status-as-of date any record in this module carries.
The trees The 45 trees this module publishes across 8 sides, as selectable objects. Each plate opens the structure beneath that record; the count on a record is a count of published records, never a measure of strength.Interrogate NATO Eastern Flank in Explore
NATO command structure
Allied Command Transformation
The alliance's second strategic command, at Norfolk, Virginia, responsible for transformation, training, doctrine and lessons learned. NATO lists four centres under it, three of them in Europe and two of those inside this theatre.
Multinational headquarters
Multinational Corps Northeast
A multinational corps headquarters at Szczecin, formed in 1999 by Denmark, Germany and Poland and part of the NATO Force Structure. NATO says it "covers" the battlegroups in Estonia, Latvia, Lithuania and Poland, and on 30 June 2026 its responsibility for Estonia and Latvia passed to the German–Netherlands corps.
Multinational headquarters
Multinational Division Northeast
A multinational divisional headquarters at Elbląg, formed in 2017 as the first division-level headquarters under the Szczecin corps. NATO says it "works closely with" the battlegroups in Poland and Lithuania.
Multinational headquarters
Multinational Division North
A divisional headquarters inaugurated at Ādaži in March 2019 by Denmark, Estonia and Latvia, with forward elements in Latvia and the rest at Karup in Denmark. NATO says it "cooperates closely with" the battlegroups in Estonia and Latvia.
Multinational headquarters
Multinational Division Centre
A divisional headquarters at Székesfehérvár, run by Hungary with Croatia and Slovakia and declared fully operational by NATO on 10 February 2025. NATO says it "has responsibility for" the battlegroups in Hungary and Slovakia.
Multinational headquarters
Multinational Corps Southeast
A multinational corps headquarters at Sibiu, formed in 2020 as the second NATO Force Structure corps on the eastern flank. NATO says it "covers" the battlegroups in Bulgaria and Romania with the Bucharest division, and its own chart places SHAPE, JFC Naples and LANDCOM above it.
Multinational headquarters
Multinational Division Southeast
A divisional headquarters at Bucharest, activated by NATO on 1 December 2015 with Romania as framework nation. NATO says it covers the Bulgarian and Romanian battlegroups with the Sibiu corps, and its own chart places SHAPE, JFC Naples, LANDCOM and that corps above it.
Multinational headquarters
Multi-Corps Land Component Command Northwest
A NATO land component command at Mikkeli in Finland, operational since 1 September 2025 and inaugurated on 3 October 2025. NATO calls it "the lead command for" the battlegroup in Finland — the only one of the seven headquarters on its page described that way.
Multinational headquarters
1 (German/Netherlands) Corps
A bi-national corps headquarters at Münster, describing itself as a NATO High Readiness Forces Headquarters assigned to NATO and the EU. It took responsibility for Estonia and Latvia on 30 June 2026, and in August 2026 Estonia, Latvia, Denmark and Canada formally joined it.
Multinational headquarters
NATO Force Integration Units
The small allied headquarters established from 2015 under the 2014 Readiness Action Plan to coordinate the reception and integration of allied forces in a host state, support collective-defence planning and assist with exercises. The Slovak defence ministry, which hosts one, states they are part of the NATO Force Structure and not a military base. How many exist in 2026, and where, is not publicly enumerated.
Forward Land Forces
NATO Forward Land Forces battlegroup Estonia
The UK-led battlegroup at Tapa, with France contributing. NATO’s page of 17 June 2026 names no Estonian host formation for it, so no host-brigade claim is carried: an earlier reading of that claim did not survive P4.5.
Forward Land Forces
NATO Forward Land Forces battlegroup Latvia
The Canada-led formation, stood up in July 2024 under the designation NATO Multinational Brigade Latvia when Latvia became the first host to scale its forward presence to a brigade. NATO’s June 2026 page still calls all nine “multinational battlegroups” regardless of size, so the designation and the scale are recorded as the two separate facts they are.
Forward Land Forces
NATO Forward Land Forces battlegroup Lithuania
The German-led formation. NATO has described the German presence in Lithuania as a permanent military base — the only one so described in this theatre.
Forward Land Forces
NATO Forward Land Forces battlegroup Poland
The US-led battlegroup. It is distinct from the bilateral United States–Poland defence agreement and from the rotational armoured brigade, which are separate arrangements.
Forward Land Forces
NATO Forward Land Forces battlegroup Slovakia
The Spain-led battlegroup. Spain took the framework role from Czechia on 1 July 2024, which makes the relationship younger than the deployment.
Forward Land Forces
NATO Forward Land Forces battlegroup Hungary
The only one of the nine whose framework nation is also its host. There is no bilateral host-and-framework relationship to record, and this module does not invent one.
Forward Land Forces
NATO Forward Land Forces battlegroup Romania
The French-led battlegroup, run by France as Mission Aigle. NATO’s June 2026 page describes it at battlegroup level notwithstanding brigade-level descriptions elsewhere.
Forward Land Forces
NATO Forward Land Forces battlegroup Bulgaria
The Italy-led battlegroup on the Black Sea flank.
Forward Land Forces
NATO Forward Land Forces battlegroup Finland
The ninth and newest formation, under Swedish framework leadership. Its headquarters seat, Rovaniemi, is published by the Swedish Armed Forces; NATO publishes no seat, garrison or lead unit for it, and none is inferred here from the framework relationship or from geography.
Nordic and High North
Finnish Defence Forces
The armed forces of the state with the alliance’s longest land border with Russia and its deepest mobilisation system. The defence forces publish the Defence Command, the three services, the Logistics Command and the Army’s eight brigade-level units in English; the wartime structure that the conscript system feeds is not published, and this tree ends where the publication does.
Nordic and High North
Finnish Border Guard
The border service under the Ministry of the Interior, which states that it is part of the national defence system and participates in NATO’s collective defence. It publishes eight administrative units by name; the mechanism by which its border troops attach to the Defence Forces is not set out on the English site.
Nordic and High North
Swedish Armed Forces
The armed forces of the Baltic’s central geography. Their organisation pages publish categories of unit — regiments, wings, flotillas, centres and schools — and name none of them, in either language. This tree is five records for that reason and no other.
Nordic and High North
Norwegian Armed Forces
The armed forces of the High North, a founding member’s military whose own organisation page names four services, two further branches and a set of joint organisations including the Joint Headquarters at Reitan. The organisation page names no brigade; the Army’s own sub-pages now do, and that finding is recorded below rather than authored.
Nordic and High North
Danish Defence
The armed forces of the state that controls the Baltic approaches and co-frames a multinational division. Defence Command Denmark in Copenhagen is published as the overall military command authority over the Army, the Navy, the Air Force, Joint Arctic Command and Special Operations Command; the Home Guard is a separate agency under the ministry and is a separate root here.
Nordic and High North
Danish Home Guard
The voluntary, unpaid military force for the protection of Denmark, published as its own agency under the Ministry of Defence beside Defence Command Denmark, with a Home Guard Command at Vordingborg and three guards — Army, Naval and Air Force Home Guard — none of which is authored.
Baltic states
Estonian Defence Forces
The reserve-based armed forces of the alliance’s most north-easterly member, organised as a Joint Headquarters over the Land Forces, the Navy, the Air Force and a set of commands. Their own structure page, dated 10 September 2024, publishes the services and commands; the divisional page of September 2026 goes one level deeper.
Baltic states
Estonian Defence League
The voluntary national defence organisation, a legal person in public law under its own Act, organised on military principles into four territorial defence regions and regional units called malevs whose areas generally follow the counties. Its Commander is subordinate to the Chief of Defence; the organisation is not part of the Defence Forces’ tree.
Baltic states
Latvian National Armed Forces
The armed forces of the state hosting the alliance’s first brigade-scale forward formation, described by their own site as three formations — the regular forces, the National Guard and the reserve — under a commander whose institution is the Joint Staff. Their Latvian-language units page publishes the services, the commands and the brigades; the English estate does not.
Baltic states
Lithuanian Armed Forces
The armed forces of the state that holds one side of the Suwałki ground and hosts the presence NATO describes as a permanent German base. Its components are established here from the Lithuanian legal-acts register and the Seimas’s principal-structure law rather than from its own web estate, which remains bot-gated.
Baltic states
Training and Doctrine Board of the Lithuanian Armed Forces
The force-development body. The principal-structure law lists a training and doctrine directorate with an instruction regiment among the armed forces’ components, and the Land Force statute of 1 September 2026 has the Land Force coordinating training-area occupancy plans with it. No source establishes where it sits in the Lithuanian command structure, so it carries no tree parent: its own official name places it inside the armed forces and no further.
Poland, central flank and Black Sea
Polish Armed Forces
The largest land force on the eastern flank. The armed forces’ own portal publishes a command layer — the General Staff, two operational-level commands and a support inspectorate — and five services, and the ministry’s gov.pl pages state which of those commands the Chief of the General Staff has held since the 2018 reform. No Polish source read names a division or a brigade, so the tree stops at command and service level.
Poland, central flank and Black Sea
Armed Forces of the Slovak Republic
The Slovak armed forces. The only structure their ministry publishes is one PDF, opened in P4.5 and read again in text on 2026-09-28 in its edition effective 1 August 2026: it charts the MINISTRY — the minister, state secretaries, sections, departments and divisions — and names no formation, no command and no general staff branch. The root with nothing beneath it is the ceiling, not an unopened file.
Poland, central flank and Black Sea
Magyar Honvédség
The Hungarian Defence Forces — the only host that frames its own forward battlegroup, and the state publishing the deepest structure in this theatre, entirely in Hungarian: its unit index names the General Staff, the commands directly under it and every brigade and regiment under each command. This tree carries the four commands and two brigades and states where it stops.
Poland, central flank and Black Sea
Army of the Czech Republic
The Czech armed forces — depth, industry and logistics behind the central flank. The ministry publishes their structure in English to command and directorate level: five major commands and a special forces directorate under the Chief of the General Staff, and beneath the land and air commands the brigades, regiments and bases they hold. This tree carries the commands and the directorate and names the rest in the gaps.
Poland, central flank and Black Sea
Romanian Armed Forces
The armed forces of the alliance’s Black Sea shoulder. The defence portal publishes the Defence Staff and the three services and nothing under them; the Defence Staff’s own site adds six joint commands, and each service publishes its own chart — the Land Forces name two divisions and no brigade, the Naval Forces name their fleet and river commands, and the Air Force names its units and the systems it flies.
Poland, central flank and Black Sea
Bulgarian Armed Forces
The Bulgarian armed forces. Their ministry’s own sitemap, read in Bulgarian as well as English at P4.5 and in English again on 2026-09-28, carries no armed-forces structure section at all; its sections are policy, missions, documents, cooperation, arms control and the multinational battlegroup on Bulgarian territory, and the one military body it linked at P4.5 was the NATO force integration staff element. The root with nothing beneath it is the ceiling.
Enabling depth and the United States
Bundeswehr
The German armed forces — four services (Heer, Luftwaffe, Marine and the Cyber- und Informationsraum) and a joint support area under one ministry, reorganised in 2024–25 around territorial and alliance defence; framework nation of the brigade permanently stationed in Lithuania and the transit depth behind the flank. The organisation hub publishes services and top-level commands, and this tree ends at the service by rule.
Enabling depth and the United States
Netherlands Armed Forces
The armed forces of the Netherlands — four services (navy, army, air and space force, Marechaussee) beside two support commands and a central staff under the minister; host of Allied Joint Force Command Brunssum, co-framework nation of 1 (German/Netherlands) Corps, and the state whose army brigades are integrated into German divisions.
Enabling depth and the United States
Belgian Defence
The Belgian armed forces — five published components (land, air, navy, medical and cyber) under one defence staff. The land component page gives a capability count — one special operations headquarters and five motorised infantry battalions — without naming a single unit, which is why this tree stops at component level.
Enabling depth and the United States
United States European Command
The US combatant command for Europe, seated at Stuttgart. Its commander is dual-hatted as Supreme Allied Commander Europe — NATO's own structure page states that SACEUR "is also the commander of the US European Command, which shares many of the same geographical responsibilities".
Russia and Belarus
Leningrad Military District
Military district re-established on 1 March 2024 from the Western MD split, oriented toward the Baltic and Finland and including the Kaliningrad exclave; peacetime parent of the 6th Combined Arms Army.
Russia and Belarus
Baltic Fleet
The Russian fleet of the Baltic — based in the Kaliningrad exclave and at the head of the Gulf of Finland, answering to the Navy's main command since the 2024 command reform; contributes naval infantry and coastal formations to the land war, and was assessed in 2026 to have formed a regiment of unmanned naval strike vehicles.
Russia and Belarus
Baltic Fleet Naval Infantry Division
Baltic Fleet naval infantry at Baltiysk, committed to the land war as the 336th Guards Brigade and announced expanded to divisional status in December 2025; the division's own designation is reported, not confirmed.
Russia and Belarus
Armed Forces of Belarus
The Belarusian armed forces — published by the ministry as a Ministry of Defence and General Staff over two services (Ground Forces, Air Force and Air Defence), the Special Operations Forces and special troops. Every structural claim on this side of the module rests on the ministry's own positions and on think-tank and civil-society monitoring rather than on allied government assessment, and the records carry that grade.
How to read this atlasRecord states, subordination grades and lineage — and the dated structural changes this module's records and corrections carry
How to read this atlas
Structure. Each side is a set of trees: state military, interior forces, and browsing groups. A record marked “Grouping · not a command” exists only so related organisations can be found together — its members do not share a command, and each states its real parent institution.
Record states. A full profile has passed source review. A stub is an honest structural placeholder — name, place in the tree, broad role, and a dated status — awaiting research. Records that cannot yet meet even that threshold are held internally and do not appear on the site at all.
Subordination grades. Parent links are graded:confirmed, reported, disputed,historical, or unknown. Where a current parent cannot be verified — as with brigades amid Ukraine's rolling corps reform — the record says unknown rather than inventing precision.
Lineage, not amnesia. Reorganised, merged or disbanded organisations keep their records, marked with dated predecessor and successor links — Wagner's absorption after 2023 and the Donetsk and Luhansk corps are carried this way, never as if unchanged.
Every record carries a status as of date for its claims and a separate reviewed date for editorial checks — a review never silently refreshes a status date.
Recent structural changes
Dated changes the records in this module state about themselves, and the corrections the public log records against this atlas — newest first.
The United States announced at the Madrid summit that the corps' forward headquarters and a support battalion would be permanently stationed in Poland — the first permanently stationed US forces on NATO's eastern flank.
Declared fully operational as the multinational divisional headquarters coordinating the enhanced forward presence battlegroups in its area.
Full history on the corrections log.
Evidence and grading
- Subordination
- Every parent link is graded by the record itself: confirmed, reported, disputed, historical or unknown. Where a current parent cannot be verified the record says unknown rather than inventing precision.
- Record state
- A full profile has passed source review; a partial profile is under review; a stub is a structural placeholder — name, place in the tree, broad role and a dated status — awaiting research. Records below that threshold are not published at all.
- Confidence
- How well established Vigil considers this assessment to be. It is not a measure of how severe the situation is.