This study investigates Indonesia’s cyber defence capabilities and strategies in addressing the growing complexity of cyber warfare threats. It also proposes a policy framework for the development of a future cyber division within the Indonesian Armed Forces (TNI). The research adopts a qualitative explanatory methodology with a case study approach, integrating primary data from interviews and observations with secondary data derived from policy documents, scholarly publications, and official reports. The analysis is conducted through triangulation of these diverse sources, contextualising the findings within the Network Centric Operations Centre (NCOC) concept. This concept highlights the importance of synergy between legal frameworks, institutions, infrastructure, human resources, and international collaboration.  The study’s findings reveal that Indonesia’s current cyber defence policies are not fully integrated. Several cybersecurity regulations, including the Electronic Information and Transactions Law, policies from the National Cyber and Crypto Agency (BSSN), and directives from the Minister of Defence, fail to distinguish between cybersecurity (as law enforcement) and cyber defence (as a means of sovereignty protection). National infrastructure, such as the National Data Centre and satellites, remains vulnerable to attacks. Additionally, there is a significant shortage of personnel with specialised cyber expertise, and the country’s incident response strategies are primarily reactive. On the international front, while Indonesia has participated in ASEAN forums and various global initiatives, there remains limited progress in technology transfer and capacity building.  The originality of this research lies in its thorough mapping of the challenges and opportunities in establishing a TNI cyber division, alongside a proposed design for a national cyber command structure. The study concludes that Indonesia’s cyber defence requires regulatory revisions to clarify the military’s authority, the development of layered infrastructure (such as SOC, military satellites, and distributed servers), the preparation of highly qualified human resources, and the enhancement of strategic international cooperation. With these measures, Indonesia could strengthen its deterrence capabilities and be better prepared for future cyber warfare.