Arcadia

Arcadia is both the name of the French Army’s programme and of the system it produces: an AI-powered battlefield command, data-fusion, and decision-support platform built in-house as France’s sovereign answer to the US Maven. It ingests and fuses battlefield data, synthesises it for staff, retrieves operational information on request, and drafts proposed courses of action, while leaving the decision to a human commander. At its core is a custom large-language model named Berthier, with French firms including Safran.AI , Mistral AI, Thales, and Airbus supplying surrounding technology.

The system is deliberately decentralised — data distributed across field-deployed servers in a mesh rather than a central cloud, so that it survives cut links and lost nodes — and built to NATO Federated Mission Networking standards for coalition interoperability. It was field-tested at NATO’s CWIX exercise in Poland in June 2026, where French officers framed it as “our response to Maven,” the Palantir targeting and decision platform NATO adopted in 2025.