Armed forces are among the biggest public consumers of fuel and other resources in modern societies. This September, Denmark released a new green defence strategy and other nations have also adopted comparable policies and strategies to address challenges such as resource scarcity, budgetary constraints, and logistics and fuel consumption in operations. To discuss and identify sustainable policies and practices as a new important aspect of defence policy, CMS hosts an international conference on green defence. The conference will provide a unique platform for knowledge-sharing, networking and collaboration between national and international stakeholders.