Zoned as a staging area for Naval bombers, Castra was a key military position along the Perry Line during the Xi'an-Human tensions of SEY 2530 - 2789. Once the Akari Treaty was recognized by Imperator Toi, the UEE military largely demilitarized the system and opened it for public habitation. Castra experienced a boom in population thanks to the inexpensive real estate that opened up in the wake of the military's departure.