In 2261, she participated in the illegal Blockade of Proxima III ordered by President Morgan Clark. As part of this blockade, she took part in attacks on civilian targets, including the destruction of two Asimov class commercial liners. These liners had been carrying sick and wounded from areas that had been getting hit by Clark's forces, including women and children. This one attack resulted in the loss of 10,000 civilian lives, and convinced Captain John Sheridan to begin his campaign to liberate the Earth Alliance, and arrest President Clark.
At the start of the Battle of Proxima III, the Pollux, along with the EAS Nemesis, were ordered by Captain Trevor Hall of the EAS Heracles to investigate the first wave of White Stars, which had jumped into the system on the opposite side of the Proxima III from the blockade fleet. When the second wave of White Stars jumped in, both vessels requested permission to turn and engage, but were denied that option by Captain Hall.
After the arrival of a third wave of White Stars, the Pollux joined the Heracles in firing on Sheridan's forces. She knocked one of the White Stars out of control, causing it to crash into the front of the Pollux. This impact resulted in her destruction with all hands, as none of the crew had time to get to any lifepods.
|Earthforce Ship Classes|
|Olympus-class corvette Hyperion-class heavy cruiser Nova-class dreadnought Omega-class destroyer Advanced Omega-class destroyer Warlock-class destroyer|
|SA-23E Starfury SA-32A Thunderbolt Stealth Starfury Heavy Starfury Badger-class Starfury|
|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|