Light Fidelity (Li-Fi) is an emerging technology that revolutionises wireless communication by leveraging the visible light spectrum for data transmission. Addressing the limitations of tradi- tional radio frequency (RF)-based systems, Li-Fi offers unparalleled advantages in bandwidth, security, and energy efficiency. This paper examines Li-Fi’s transformative potential, partic- ularly in military contexts where secure and resilient communication is paramount. From enhancing command and control operations to facilitating naval coordination and disaster re- sponse, Li-Fi’s unique attributes, such as immunity to electromagnetic interference and high- speed transmission, make it a compelling alternative to RF technologies. However, issues like line-of-sight reliance and environmental sensitivity must be addressed be- fore widespread use occurs. The integration of Li-Fi with existing RF systems via hybrid tech- niques, as well as the new IEEE 802.11bb standardisation, point to a route towards practical feasibility. The paper also explores prospects, including Li-Fi’s role in multi-domain operations and its potential synergy with quantum encryption technologies. The study’s extensive research highlights Li-Fi’s importance in tackling current communica- tion difficulties, as well as its ability to reinvent connection in military and civilian applica- tions. The adoption of Li-Fi might signal a watershed moment in the transition to more secure, efficient, and adaptive wireless communication networks for an increasingly linked world by encouraging collaboration among governments, academics, and businesses.