Multiple drones over Belgian military training area Elsenborn

In the early hours of 03 October 2025, around 1:45 a.m., roughly 15 unidentified drones were detected flying over the Belgian army training area at Elsenborn, a roughly 28 square kilometre military domain in eastern Belgium's German-speaking Community, only a few kilometres from the German border. According to VRT NWS, the drones were spotted by chance while a system designed to detect drones was being tested at the base, and the equipment was able to pick up the aircraft. The Belgian military launched an investigation into the incident.

The drones reportedly crossed from the Belgian side into German airspace. VRT NWS reported that police in the German town of Düren also observed the drones after they passed the border. Euronews, citing local reports, noted that the aircraft had reportedly moved across the frontier, though the exact flight path could not be independently confirmed at the time.

The office of Belgian Defence Minister Theo Francken confirmed that the incident had taken place. Where the drones came from and who was operating them remained unclear, and officials did not name a responsible party. Euronews placed the sighting in the context of a wider series of drone incidents and airspace disturbances reported across Europe in autumn 2025, while noting that Russia has rejected accusations of involvement as unfounded.

The Elsenborn sighting was an early entry in a wave of drone incursions over Belgian military and civilian sites in autumn 2025. The numbers, the proximity to a NATO training area, and the cross-border flight pattern point to deliberate, coordinated activity rather than hobbyist error, and Belgian officials treated it as a serious security matter. However, no operator was identified and no state was conclusively linked to the flights. Attribution remains unknown, and claims of hostile or Russian direction are unproven. The chance detection underscores gaps in Belgium's counter-drone surveillance at the time.