United Nations Space Command
From Halopedia, the Halo wiki
The United Nations Space Command is a fictional military organization from the Xbox games Halo and Halo 2. Known military units within the UNSC include the Marines and the Orbital Shock Drop Troopers (because of their reckless nature, also known as the Helljumpers).
Within the UNSC is the Office of Naval Intelligence (ONI), which is responsible for the SPARTAN II Project.
