As climate challenges grow, the military’s role is shifting from combat toward disaster relief and resilience, requiring a rethinking of how urban spaces integrate military functions. Downsview Park, a former air force base and aircraft manufacturing site, offers a unique opportunity for adaptive reuse. The proposal transforms the existing Supply Depot into a hub for sustainable research facilities while incorporating military housing. This transformation builds on the military’s foundation, expanding its role in civic resilience, sustainability, and urban innovation.