ALT https://www.airuniversity.af.edu/JIPA/Display/Article/3703881/ Climate change poses an existential threat to global security. However, defense forces, as major greenhouse gas emitters, lack emissions reporting requirements and climate adaptation plans. This article analyzes current deficiencies and advocates for improved climate risk assessment, measurement, transparency, target setting, and mitigation by defense forces. It introduces tools to build climate awareness and catalyze action across military and civilian spheres. Specifically, a C4 model (command, control, climate, and community) integrates top-down and bottom-up approaches. Meanwhile, the CLARA framework (communicate, leadership, awareness, risk and resources, and action) provides guidance for defense forces to assess and reduce risks. Establishing a methodology for comparability and accountability, as NATO has done, is advised. With unprecedented climate impacts already occurring, urgent collaborative action is imperative.