Navigate the complex nexus of environmental degradation and national security in India. This pivotal work dissects emerging global and local ecological challenges, including climate change and resource scarcity, and their direct impact on security paradigms. It critically examines the evolving responsibilities of the military in disaster management, humanitarian aid, and conflict prevention arising from environmental stressors. An indispensable resource for defense personnel, policymakers, environmental scholars, and students of security studies across India, offering crucial insights into how environmental shifts are redefining national defense and regional stability.