The EAS Pollux was an Earthforce Omega-class destroyer under the command of Captain Elizabeth Morgernstern. 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.