A next‑generation, all‑composite expandable shelter engineered for rapid deployment, high durability, and full operational performance — even under extreme field conditions. The structure meets ISO 20‑ft container footprint specifications, but delivers far more: lightweight carbon‑fiber/foam‑core composite panels provide superior strength and thermal insulation, while composite expanding walls, floors, and roof allow the shelter to deploy quickly and expand its usable volume on-site. Compared to traditional aluminum shelters, this design offers significantly higher stiffness and load‑bearing capacity, improved insulation (R‑value ~8‑9), and easier transport and handling. Built with advanced composite manufacturing techniques, the shelter fully supports HVAC operation, making it suitable for sensitive operations — from medical support to command posts — in rugged, mobile environments.