XOF



XOF is the name of a mysterious unit that existed some time in the late 1970s. The unit utilized an inverted image of the (then-defunct) FOX unit's logo as their own. They were led by an unknown scarred man.

History
XOF was somehow involved in the capture of Chico, necessitating a rescue from Big Boss. In addition, they were presumably agents of Cipher, having also detained ex-Cipher agent Paz Ortega Andrade 10 days after a Belizean fisher boat recovered her from sea. However, XOF apparently anticipated Big Boss's arrival (presumably due to Chico talking under stress of someone being tortured), and decided to undergo a Trojan Horse operation. They left Camp Omega after they met with Chico, and they departed to parts unknown, although not before their leader masked the logo from his chopper. They were at least familiar of Big Boss and the MSF, as their leader told Chico to "give my regards to your Boss, when you get home" just prior to departing from Chico's cage, also implying that they want Big Boss to rescue Chico and Paz.

Ultimately, they destroyed Mother Base, with Kazuhira Miller, Big Boss, Huey and some MSF soldiers being known to have escaped.

Equipment and functions
During the events of the late 1970s, regular XOF soldiers wore Olive drab uniform and combat boots, a chest harness, a balaclava and a ballistic helmet with a designation number painted on. Some also wore headsets for communication and all wore black brassards on the left arm with XOF logo. These soldiers were armed with M1911 series pistols and Ruger MP9s modified with Skorpion vz. 61 folding stocks, and had access to aircraft and vehicles such as Modified MH-60 Blackhawks with retractable gear, APCs, and Jeeps.

The group also utilized sign language to nonverbally strategize: For example, when wanting to signal that they were ready to take off, they raised their left hands, extend their index finger, and make horizontal spinning motion.