Mercenary War

The Mercenary War occurred in 1997, just as the mercenary country of Zanzibar Land declared it's independence. Zanzibar Land later went on to invade neighboring countries seemingly at random and, using Metal Gear D, stole the last remaining active nuclear warheads from all over the world, eventually becoming the only nuclear nation left.

The Mercenary War ended in 1999, when Solid Snake infiltrated the nation, killed off it's highest ranking mercenaries, and eventually succeeded in destroying Metal Gear D. He then went on to cripple Gray Fox, his best friend who had joined the nation, and finally killed Big Boss who lead them, who also revealed himself as Snake's father.