The UNSC Beowulf was a standard UNSC Frigate. It took part in the Fall of Reach, and soon after, the Loss of Hope. During the Loss of Hope, it was assigned to salvage as many soldiers from Hades as possible, before providing them transport back to Hope. It was also the ship used to escort ONI's precious
experiment, "Tron", until it could find a suitable temporary location. This would be Matthew-123. It is known that the Beowulf's captain, Eric Rembrandt, and Tron shared an unusual rivalry.