Command, control, communications, computers, and intelligence

Definition
Command, control, communications, computers, and intelligence (C4I) systems are a key element in facing the broad range of military missions and operations envisioned for a post-Cold War future. C4I systems have traditionally been viewed as the combination of communications, warning, intelligence, command, and information systems necessary for military decision-making and force management. These systems provide the command and control (C2) foundation for optimal effectiveness of the forces. However, C4I now includes other areas such as counterintelligence[[, [[corporate information management (CIM), and information warfare.