For a country that has never had an army, this is a pressing question. The answer is clear: the EU is not a military alliance and cannot require any state to establish armed forces or introduce conscription.
Is there a common European army?
No, there is no "European army". Defence and security are primarily the responsibility of each member state. The EU has a Common Security and Defence Policy (CSDP), focused on peacekeeping, post-disaster reconstruction, and border monitoring. Participation by member states in such operations is entirely voluntary.
Each country decides how it organises its own defence. States with armies decide for themselves whether to contribute personnel to EU missions, and states without armies — like Iceland — would by definition not be asked to provide soldiers.
The special position of non-military and neutral states
The EU Treaties specifically accommodate countries with defence policies that differ from the majority. Luxembourg is in the EU but relies on its allies for defence. Countries like Austria and Ireland are constitutionally neutral and remain outside military alliances.
Ireland is a good precedent. When the Lisbon Treaty was being debated, the Irish had serious concerns about the creation of a European army and the introduction of conscription. To remove all doubt, Ireland secured a specific legally binding protocol attached to the EU Treaties (Protocol on the concerns of the Irish people). It states explicitly that the Treaties entail neither the creation of a European army nor the introduction of conscription, and have no effect on Ireland's military neutrality. Protocols attached to the EU Treaties carry the same legal force as the Treaties themselves and cannot be amended without the consent of all member states.
In the event of accession, Iceland — just like Ireland — would secure its traditional policy of having no military in an accession treaty.
NATO remains our primary security guarantee
For most EU member states, including Iceland, NATO is the foundation of their defence. The EU Treaties explicitly recognise that NATO is the basis of collective defence for those states that are members. Joining the EU would change nothing about our current security arrangements: we are in NATO without having our own army, and exactly the same arrangement would apply if we were also in the EU.
In short: The EU is not a military alliance and cannot decide to create an army without the unanimous consent of all member states — where Iceland would have a veto. As an EU member, Iceland would remain military-free, would maintain its security ties through NATO, and would receive the same legal protections that Ireland secured to safeguard its special status.
Sources and further reading:
- To remove all doubt about the implications of the Lisbon Treaty, a specific legal protocol was adopted and is now permanently attached to the EU Treaties. Article 3 of the protocol states explicitly that the EU requires neither the creation of a European army nor conscription, and fully respects the traditional neutrality of states such as Ireland. See the Protocol in the Official Journal of the EU (L 60, 2013).
- Article 42 of the Treaty on European Union (TEU) governs EU defence cooperation. It states clearly that EU policy shall not prejudice the specific character of the security and defence policy of certain member states, and that NATO shall remain the foundation of collective defence for its members. See Article 42 TEU on Eur-Lex.
- The European External Action Service (EEAS) website describes how the Common Security and Defence Policy (CSDP) works in practice. Operations consist mainly of peacekeeping beyond EU borders, and participation is entirely at the discretion of each member state. See the CSDP overview on the EEAS website.