Through Defense Innovation 4.0, our military is currently seeking a change in military development from strengthening defense power with superior force/firepower to strengthening defense power through technological/qualitative improvement in order to foster an advanced science and technology force. In particular, the latest scientific technologies, such as AI, IT convergence technology, space utilization ability, lasers, and robots, which have attracted attention through the 4th Industrial Revolution, have accelerated due to the coronavirus pandemic and are being developed into surveillance and By integrating cutting-edge smart sensors and AI (artificial intelligence) technologies into reconnaissance, command and control, and precision settlement systems, we are developing a complex system in which combatants and weapon systems are hyper-connected. In this study, we aim to introduce bio-signal technology, which has been actively researched not only in the civilian world but also in the military, and to suggest new methods that can be used to improve the survivability of individual combatants on the battlefield and increase combat effectiveness when used militarily. do. In particular, in order to increase combat effectiveness, we would like to select and present an optimal command system through the Delphi technique and alternatives that can be used as a command and control tool in a noise-free and non-operational state.