From Halopedia, the Halo wiki
Following the Banished's ambush on the UNSC Infinity upon its arrival at Installation 07 on December 12, 2559, UNSC forces made landfall on the ring. While many survivors at the fragmented section of the ring gathered at the wreckage of the Mulsanne-class frigate UNSC Mortal Reverie as a base of operations, they also established Forward Operating Bases in nearby locations. FOB Golf was located northeast of the Banished salvage and repair facility Ransom Keep, and southeast of Chak 'Lok's Tower.
By March 3, 2560, FOB Golf was in Banished control, with the Banished adding their own equipment and troops around the FOB. The FOB was also connected to the Banished battle network protocol, tracking nearby UNSC and Banished activity. On May 28, Master Chief Petty Officer John-117 came across FOB Golf while on his way to investigate a distress call from the Tower. At the urging of his artificial intelligence known as the Weapon, the Chief eliminated the Banished forces at the FOB and deployed the Weapon at the FOB's terminal. The Weapon removed the FOB from the Banished network, returning it to UNSC control. She then marked the nearby locations of interest on John-117's TACMAP, including Ransom Keep and Okro 'Vagaduun.
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