Fenris – the name derives from Old Norse, meaning ‘fen wolf’ or ‘swamp wolf’ – was a word on the lips of thousands of visitors on the first day of Eurosatory 2026 as John Cockerill Group unveiled its latest AFV, the Fenris 6×6.
Developed in a compressed timeframe and combining the turret and armament expertise of John Cockerill with the mobility solutions heritage of Arquus – now a fully integrated company within the Belgian group – the vehicle also features a Hornet-S RCWS for the close-in defence and counter-UAS roles, sporting an FN MAG 58 7.62mm machinegun.
Launched as a concept early in 2025, design work started in July and just ten months later a working prototype was available to be displayed at the biennial defence show. The meteoric development pace was made possible by marrying two established, proven components: a chassis derived from the Arquus Jaguar reconnaissance vehicle (part of the French MoD’s Scorpion programme) and the Cockerill 3105 turret, mounting a 105mm gun, which has seen service in Ukraine.
The marriage was one of convenience and, like most such arrangements, required some compromises to be made. The Cockerill 3105 turret was designed for MBTs or 8×8 IFVs, so mounting on the 6×6 Jaguar-derived chassis required limiting main gun elevation to a maximum of 36°. Other minor modifications to dimensions notwithstanding, the weight increase over the Jaguar is barely a tonne, meaning the now 26-tonne vehicle can retain the same Volvo HDE 11 diesel developing 500hp. Firepower, however, lies at the heart of the Fenris: the Cockerill turret, stabilised in two axes, packs the lethality of a medium tank into a 26-tonne platform. The high-pressure 105mm gun uses NATO standard ammunition and an automatic loader in the turret carries 12 ready rounds, with a further 24 in the hull. The day/night optronic suite enables the vehicle to be used in hunter/killer mode and the company claims the AI-enabled auto-tracking system offers a 95% hit rate on the move against a mobile target at 2,000 metres.
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Intended to provide reconnaissance units with highly mobile, stealthy firepower, Fenris will undoubtedly also be used to bolster mechanised or armoured infantry units, which rarely have such large calibre mobile systems on modern battlefields. At least one observer of the unveiling on 15 June saw the Fenris as a modern AMX-10 RC.
The Fenris embodies solutions, and expertise from all three components of the Belgian armoured vehicle specialist: John Cockerill Defense, Arquus and Hornet, which bodes well for further development from the newly invigorated group.
Headline image: John Cockerill states it can deliver Fenris vehicles within 16 months of a confirmed order. (John Cockerill Defense)
