Global Command and Control System

Definition
A Global Command and Control System (GCCS) is

"[a] deployable command and control system supporting forces for joint and multinational operations across the range of military operations with compatible, interoperable, and integrated communications systems."

Source

 * U.S. Department of Defense, Joint Pub. 1–02: DOD Dictionary of Military and Associated Terms (Apr. 2010) (full-text).