Originally claimed by the Lyran Commonwealth's Federation of Skye, the heavily urbanized and industrialized world was claimed quickly by House Marik's Free Worlds League during the Age of War, and it was still a Marik holding when the Terran Hegemony rose to prominence in the years that followed. As a key border world and hub of trade during the Star League era, Callison came to be jointly administered by the Hegemony and the Free Worlds League through the Star League era, reverting to full Marik control only after the Amaris Crisis and the collapse of the Star League.
Once again, the value of this planet made it a bone of contention between the Free Worlds League and the Lyran Commonwealth as the Succession Wars began. Thus, in an effort to counter numerous Steiner efforts to capture the world, Callison joined with other nearby worlds to form the Silver Hawks Coalition in 2966. Though this mini-state of the Free Worlds League enjoyed greater coordinated defense, the formation of the Coalition did little to curb Lyran raiders and invasion fleets.
Throughout the Succession Wars this world would see heavy fighting that devastated such major cities as Harzburg, Mountainside, and Rolso, as well as the asteroid-mining operations in the nearby Zesamali Belt. Despite these assaults, Callison remained a Marik holding until the fourth and final Succession War, when Lyran mercenaries finally seized the world with a decisive battle at the capital city of Fallosha. Steiner victory, however, proved short-lived, for within two generations Callison once more lay under the League’s purple eagle banner after Operation Guerrero broke the back of the once-mighty Federated Commonwealth.
The capital city and main spaceport of Fallosha is located on Callison's northern island continent of Grayle. A second spaceport city, New Rolso, is located on the equatorial landmass of Vantassa, which is also home to Callison Enterprises, a local shipping cartel.
- System Name: Callison
- Coordinates: -63.11, -15.13
- Star Type: G5V
- Position in System: 2
- Time to Jump Point: 7.00 days
- Population: 5,167,000,000
- Percentage and Level of Native Life: Mammals
System Owner Eras:
System Occupation Dates:
|2569-08-15||Terran Hegemony/Free Worlds League|
|2822-01-01||Free Worlds League|
|3057-12-15||Free Worlds League|
|3081-12-31||Republic of the Sphere|
Inhabited System(s) within 2 jumps:
|Planet:||X Coord:||Y Coord:||Jumps:|
|Van Diemen IV||-33.12||-41.99||2|
Planet has description information.
Planet has one of more factories.