Actium

Actium was a human colony world, one of the Inner Colonies administrated by the Unified Earth Government. The planet was the homeworld of Office of Naval Intelligence Captain Veronica Dare.

History
Actium was colonized by the Unified Earth Government in 2397. The colony was discovered by the Covenant in May 2545. The ensuing campaign lasted less than a month. It ended in the total destruction of local UNSC defenses and the world's inevitable glassing. Before that happened, however, the planet's defenders managed to inflict heavy casualties on the Covenant.

Trivia
The colony is likely named after Actium, a promontory in western Greece which was the site of a major battle during the Final War of the Roman Republic.