In 2552, this tank was assigned to the frigate UNSC In Amber Clad. That year, during the Battle of Earth, Commander Miranda Keyes ordered that a tank be sent to John-117 in Old Mombasa to help fight Covenant forces that had landed in downtown New Mombasa. John used the tank to cross the main bridge to the downtown area, destroying numerous Ghosts, Wraiths, and Banshees along the way. However, he was forced to abandon the tank soon after in a highway tunnel, because debris in the tunnel prevented the tank from going any further, due to its size.