The book describes the bases and applications of the military command and control systems of different armed forces kind and countries. The description of the future threats and the operational environment, of the command and control operational requirements was done. The concepts of military command and control systems are presented. The different kinds of command and control systems are communicated. The role and application of artificial intelligence, communication, and information systems in command and control systems are delineated. The aspects of the security assurance of command and control systems are analyzed. The advanced and integrated solutions for command and control are disclosed. The command and control systems used in different kinds of military forces, and countries, such as EU, NATO, Czech Republic, Poland, Bulgaria, Australia, South Korea, and China are reported.