Wildfires spreading across western France near the city of Bordeaux are posing a serious risk to several of the country’s most strategically important defense manufacturing facilities. Among the threatened sites are an ArianeGroup plant involved in producing propulsion systems for the M51 submarine-launched ballistic missile, Dassault Aviation’s Rafale fighter aircraft assembly facilities, and a major Roxel production center that manufactures solid rocket motors for MBDA missile systems.
In response to the advancing fires, Dassault Aviation has relocated critical equipment from its Martignas facility to its Mérignac site, closer to Bordeaux. Following directives from local authorities, the majority of employees have been instructed to remain at home. ArianeGroup has evacuated personnel from its affected facilities, while the French Atomic Energy Commission (CEA) temporarily closed its military nuclear research center near Bordeaux as a precaution.
The Gironde region in southwestern France is experiencing one of the country’s most severe wildfire events on record. More than 100,000 acres of land have been destroyed, covering an area approximately four times the size of Paris. The fires have moved dangerously close to an industrial corridor west of Bordeaux that houses some of France’s most significant defense and aerospace facilities, including manufacturers of missiles, propulsion systems, combat aircraft, and military electronics.
Dassault Aviation confirmed that sensitive equipment from its Martignas production site and logistics center in Cestas has been transferred to Mérignac and the nearby Air Base 106. The relocation has been carried out in coordination with France’s Directorate General for Armament (DGA) and regional authorities. Martignas serves as the primary wing assembly facility for the Rafale fighter aircraft before final assembly takes place in Mérignac.
Satellite imagery indicated that active fire fronts remained within approximately 9 kilometers (5.6 miles) west of the Martignas facility. Although NASA’s Fire Information for Resource Management System (FIRMS) reported a noticeable reduction in fire intensity west of Bordeaux by Tuesday morning, officials warned that another period of extreme heat, combined with persistent drought conditions, could cause wildfire activity to intensify again.
Most employees at Dassault’s Mérignac and Martignas plants have remained away from the sites, except for personnel responsible for relocating equipment and supporting on-site protection measures alongside emergency responders.
ArianeGroup stated that it has been working closely with both regional and national authorities. Its facilities west of Bordeaux have been evacuated, and precautionary measures have been implemented to secure critical infrastructure. The company declined to provide further details regarding security arrangements.
Satellite observations showed active fires approximately 12 kilometers from ArianeGroup’s Candale facility, where propulsion modules for the M51 missile are assembled, around 13 kilometers from the Saint-Médard-en-Jalles site responsible for missile fueling, and roughly 16 kilometers from the Le Haillan facility, which manufactures solid propulsion systems.
Defense analysts have emphasized that, beyond the environmental destruction and humanitarian impact, the wildfires also threaten facilities essential to France’s nuclear deterrence capability. According to Etienne Marcuz, Associate Fellow at the Foundation for Strategic Research, the affected industrial sites represent assets of exceptional strategic importance.
To protect these sensitive locations, emergency services, supported by local construction companies, spent several days clearing vegetation and establishing firebreaks around critical defense installations. Gironde Prefect Sophie Brocas confirmed that these preventive measures were undertaken to reduce the likelihood of flames reaching strategic infrastructure.
Marc Vermeulen, head of the Gironde Fire and Emergency Service, stated that once civilian lives are secured, safeguarding strategic defense sites becomes the next operational priority. One such installation is the Directorate General for Armament’s missile testing facility located west of Saint-Médard.
Thales has also temporarily suspended operations at its Mérignac facility in compliance with official safety recommendations. The company stated that efforts are focused on protecting essential equipment while ensuring that customer commitments can continue with minimal disruption. The Mérignac site, situated opposite Dassault Aviation’s campus, produces avionics for the Rafale fighter as well as systems for military helicopters.
MBDA’s subsidiary Roxel operates one of its principal manufacturing plants in Saint-Médard, where it produces propellants, solid rocket motors, and performs integration work for rockets and unmanned systems. The site, shared with ArianeGroup, manufactures propulsion systems for several MBDA missile families, including the Aster air defense interceptor series. MBDA confirmed that safety measures have been implemented to protect employees and maintain operational resilience, while declining to provide additional details.
The French Atomic Energy Commission (CEA) has also closed its CESTA research center in Le Barp because of the wildfire threat. Following major wildfires in 2022, the facility introduced enhanced wildfire protection measures, including improved firefighting capabilities, additional emergency equipment, and expanded firebreaks surrounding the site.
The CEA CESTA complex is home to the Megajoule Laser, one of France’s most advanced research facilities. The installation recreates the extreme temperatures and pressures associated with nuclear detonations, enabling scientists to validate the reliability of the country’s nuclear deterrent without conducting live nuclear tests.
Satellite monitoring indicated that the nearest active wildfire was approximately 7 kilometers from the CESTA facility on Tuesday morning, after the fire had advanced to within about 4 kilometers of the site during the previous weekend.
