Terceira

Terceira is a colony world of the United Earth Government located in an undisclosed star system. Following the Human-Covenant War, the Spartans were deployed to the colony to suppress the local insurrection.

Trivia
The colony is presumably named after an island located in the Atlantic Ocean; it is part of the Azores archipelago, a Portuguese autonomous region on Earth.

List of appearances

 * Halo 4