The final paper analyzes C2 systems (Command and Control), as well as the possibilities of their application in different organizations. Each of the components of the C2 system was analyzed separately: "command" as a skill and "control" as a science. An equally important element of the C2 system is the command concept, which is described as a tool to combat information overload. The paper begins with an introduction and a glossary describing the key terms that will be used, followed by an overview of the C2 system from three perspectives: a process, function, and organization perspective. The description of the military C2 system is provided using the examples of the Republic of Croatia and the Slovak Republic. The use of the civilian system is exemplified by the operation of the operational communication centers of the police and firefighters in the Republic of Croatia, as well as by the operation of the civil protection operation center and the 112 system. The final section includes a brief outline of the further transition of the C2 system to the C3 system, followed by an overview of how it functions in NATO.