In 2267, the Medusa and the EAS Orion oversaw the mining operation on Regula IV. Captain Daniels was commanding officer at that time. The Medusa sent out a request for help, and the Excalibur responded.
The Medusa sent down an assault team after the miners were captured by the Regulan colonists, which was captured as well.
After the Excalibur destroyed the mine, Captain Daniels agreed to relocate the mine with the help of the colonists away from the main settlements. 
|Earthforce Ship Classes|
|Olympus-class corvette Hyperion-class heavy cruiser Nova-class dreadnought Omega-class destroyer Advanced Omega-class destroyer Warlock-class destroyer|
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|Earthforce One Magnum heavy lifter Breaching pod Troop Transport Kestrel Class Atmospheric Shuttle Crew Shuttle|
|Aegis orbital defense platform Life pod Work pod Gunship Explorer class ship Cotten class Deep Penetration Tender Shadow Hybrid|
|EAS Acheron EAS Achilles EAS Agamemnon EAS Agrippa EAS Alexander EAS Apollo EAS Artemis EAS Cadmus EAS Cerberus EAS Charon EAS Churchill EAS Damocles EAS Delphi EAS Excalibur EAS Furies EAS Heracles EAS Heraclion EAS Hermes EAS Hydra EAS Juno EAS Medusa EAS Nemesis EAS Nimrod EAS Olympic EAS Orion EAS Persephone EAS Pollux EAS Pournelle EAS Roanoke EAS Talos EAS Theseus EAS Vesta EAS Zeus|