[[Image:Battlefieldfortress.jpg|140px|right|thumb|[[Subspace Army|Armights]], [[Subspace Army|Sword Primids]], and a [[Subspace Army|Autolance]] attacking Meta Knight in the the Battlefield Fortress.]]
The '''Battlefield Fortress''' is an area in the [[Subspace Emissary]] mode of ''[[Super Smash Bros. Brawl]]''. It is the stage in which [[Marth]] and [[Meta Knight]] make their debut in the Subspace Emissary. During the story, Marth sees a subspace explosion nearby the fortress, andcreated decidesby the [[Subspace Bomb]]. Shortly after, the [[Ancient Minister]] drops [[Shadowbugs]] across the area, creating [[Primid]]s that continue to helpmarch outtowards the fortress. Marth then runsprepares throughto head out and fight the outsideSubspace areaArmy. ofIf played in co-op, the Battlefieldsecond Fortressplayer will take control of a second Marth. WhenOnce athe reaches the end, heMarth meetsis andattacked duelsby [[Meta Knight, both of them believing the other is working for the Subspace Army. However, after a short duel, the two realize they are on the same side, and join forces to defeat the rest of the army in the area. After finally catching up to the Ancient Minister, they both fail to stop him from carrying another Subspace Bomb to another location. However, [[Ike]].Whensuddenly appears, and uses [[Primid|PrimidsAether]] appearto aroundbreak themand thoughdeactivate the bomb, theyforcing teamthe upAncient Minister to flee. SoonIke enoughjoins theythe alsogroup, teamand the three continue to catch the Ancient Minister, but fail to catch up with [[Ike]]him after he hovers over a cliff.
