European Defence Officials Urge Early Interoperability Testing and Open Architectures

Defence Priorities at Apex Europe 2026

European defence officials highlighted open architectures, early prototype testing, and enhanced system integration as critical priorities during the Apex Europe 2026 conference held in London on 7–8 October. According to reports from the event, military leaders focused on key mission areas including:

• Interoperability between crewed and uncrewed systems
• Cross-domain command and control (C2)
• Resilience against cyber and electronic-warfare threats

Operational Challenges in Latvia

Speaking at the conference, Brigadier General Ilmars Lejins, deputy commander of NATO's Multinational Division North (MND-N), noted that approximately 4,000 allied troops stationed in Latvia frequently operate equipment and systems that lack seamless integration.

To address these integration hurdles, MND-N established a divisional experimental cell designed to evaluate fielded equipment and accelerate operational feedback. Brigadier General Lejins encouraged nations with deployed forces to collaborate with host governments on interoperability trials within existing legal frameworks. He highlighted that Latvia has established specific legal structures to engage with industry partners while adhering to established competition and contracting regulations.

MND-N maintains forward-deployed elements in Ādaži, Latvia, alongside its primary headquarters located in Karup, Denmark.

Requirements for System Verification

Colonel Thomas Erlenbruch of the Bundeswehr’s Cyber and Information Domain Service emphasized the necessity of rigorous verification, validation, and accreditation processes for command and control systems prior to deployment.

Colonel Erlenbruch stated that testing procedures should commence much earlier in the development cycle to detect interoperability flaws before final accreditation stages. Highlighting the need for system transparency, he remarked that military organizations can no longer accept sealed technology solutions without adequate insight into their internal functions.

Verification and Further Information

Observers seeking to verify these official statements and explore broader defence modernization trends can consult published announcements from NATO commands, national armed forces briefings, and official proceedings from international defence exhibitions such as Apex Europe.