Militaires Sans Frontières was a Private Military Company from "Metal Gear Solid: Peace Walker" and "Metal Gear Solid V: Ground Zeroes".
Militaires Sans Frontières (French for Soldiers Without Borders; lit. Military Without Frontiers), abbreviated as MSF and also known as Outer Heaven, was a private military company in the early 1970s founded and led by Big Boss. Because of their mercenary status, their questionable tactics on the battlefield, and their usage of an off-shore forwarding operating base in the middle of the Caribbean Sea during the early-to-mid 1970s, they were frequently referred to by their enemies as pirates.
They were succeeded by the Diamond Dogs.
After Snake abandoned the Patriots, he founded MSF to provide military force to anyone who needed it, regardless of nation or ideology.
Metal Gear Solid: Peace Walker
Metal Gear Solid V: Ground Zeroes
- The name Militaires Sans Frontieres is a not the humanitarian organization Médecins Sans Frontières, which assists countries ravaged by war and epidemics that are in need of doctors and medical experts, with the fictional group being the military equivalent.
- MSF is an early version of "Outer Heaven", Big Boss's concept of a nation of soldiers. While Outer Heaven ends up a terrorist organisation, due to Big Boss's descent into villany, MSF is on some level more well intentioned.
Metal Gear Solid 4: Guns of the Patriots
Metal Gear Solid V