Fortress
From Halopedia, the Halo wiki
The Fortress is the upgraded version of the station in Halo Wars for the UNSC.
Background
The upgrade allows two other building sites, totaling to seven building sites and the same four turret sites from the station. It also features a self-destruct sequence allowing it to destroy itself for other allies to make a base in its spot and damage any enemy units nearby.
The fortress also allows for a lock sequence that will not allow any newly trained units to leave the base when done training/being produced.
