The chapter explores the integration of defence-grade materials into construction to enhance infrastructure resilience. Advanced materials like carbon fibre, Kevlar, graphene composites, and multifunctional geopolymers offer high strength, durability, and self-healing properties. Bio-inspired innovations, including mechanoluminescent, hydrophobic, and energy-autonomous materials, have successfully transitioned into civilian applications, improving seismic resilience, structural health monitoring, and environmental protection. Despite cost and scalability challenges, ongoing research in 4D printing, nanotechnology, and self-healing systems is driving broader implementation. Increased investment in advanced materials underscores their crucial role in developing sustainable, adaptive, and high-performance urban infrastructure. © 2025, IGI Global Scientific Publishing.