Rapier was a Sword Class destroyer serving in the Alliance fleet. It first came to John Geary's attention in Corvus system where it intercepted and destroyed a Syndic courier. Rapier shared credit with her sister-ship Bulawa for destroying a Syndic merchant vessel in the Baldur system. Rapier took heavy damage and temporarily lost propulsion during the first Battle of Lakota but survived to jump for Ilion with the rest of the fleet. Rapier investigated the loss of shuttle flight Omicron Five One after the second battle of Lakota but found nothing to explain the accident.
Rapier made it back to Varandal with the rest of the fleet and may have become part of the newly constituted First Fleet.