Station

. A Firebase is an encampment set up by UNSC Marines in combat zones or other locations that are otherwise hostile. Firebases are normally lettered according the phonetic alphabet (Alpha, Bravo, Charlie...). In a situation where there are multiple Firebases, the one with the command structure is called the "HQ" (Head Quarters).

Firebases usually contain facilities for soldiers to sleep, eat, be treated for injuries, and where the chain of command is located. These bases usually consist of pre-fabricated structures, such as Cubicles, that are deployed on the battlefield along with ground forces. Firebases act as strong points and bases of operations for Marines during a ground engagement.

Converted Colony Ships, such as the UNSC Spirit of Fire, are capable of constructing, staffing and supplying firebases in "hot spots."

Because of their nature, these fire bases are obvious targets for Covenant Srtike Teams.

Firebases

 * Installation 04
 * Alpha Base


 * The Battle of Sigma Octanus IV
 * Alpha Headquarters
 * Firebase Bravo