The AMC3 project is transforming cybersecurity certification and accreditation within the Belgian Defense. By automating and modernizing these traditionally time-consuming processes, AMC3 ensures faster, more reliable assurance of critical software systems. Through innovative simulation-based verification and close collaboration with defense industry partners, the project supports agile certification for both existing and evolving technologies. Validated through real-world case studies—like the MASFAD intrusion detection system and FN Herstal’s FN® SAM weapon software—AMC3 delivers a scalable, cost-effective solution to strengthen the cyber-resilience of military networks.