Mercenary

Mercenaries, sometimes referred to as Dogs of War, are soldiers who participate in conflicts for a profit, often selling their services to the highest bidder. Because they are only loyal to those who pay them for a job instead of to a state, they are usually considered untrustworthy. Some missions that mercenaries can also be hired for are wetwork purposes such as assassinations. Some mercenaries also participate in conflict for reasons other than financial matters: Namely, if they have an innate desire for battle and possibly murder, as evidenced by Solid Snake, Gray Fox, and Big Boss's motivation for participating in mercenary work.

Mercenary usage
After Naked Snake, rechristened Big Boss, left the FOX unit for reasons relating to his guilt over killing The Boss, he participated in various conflicts, including the Mozambician War of Independence, as a mercenary after a failed attempt at weaning himself from the battlefield. He resumed mercenary work after leaving the Patriots, and participated in various conflicts during the Vietnam War for various parts of the U.S. military before forming his own private military company, the Militaires Sans Frontieres. Around the same time, Kazuhira Miller also participated in various mercenary work, including aiding some Colombian guerillas as an instructor, before the guerillas ended up defeated by the Militaires Sans Frontieres and offered a spot on MSF. In addition, at some point after going separate ways with Big Boss, Kazuhira Miller, going under the name McDonnell Benedict Miller, acted as an instructor for a mercenary school twice a year.

During 1974, various Vietnam veterans ended up undergoing mercenary work and being contracted to aid the Peace Sentinels in the completion of the Peace Walker project for reasons relating to their poor treatment by the time they got back from the Vietnam War. Some of the mercenaries also ended up joining the Militaires Sans Frontieres.

By the time of the 1990s, several Russian soldiers, after they ended up losing their jobs from the Red Army's reorganization as a result of the Soviet Union's collapse, ended up undergoing mercenary work, with one in particular, former GRU colonel Sergei Gurlukovich, also forming a mercenary team, the Gurlukovich Mercenaries, with the intended goal of reestablishing Russia as a world superpower. Revolver Ocelot also underwent several mercenary jobs in various global hotspots before joining FOXHOUND in 2000. Mercenary backgrounds are also part of the qualifiers for joining FOXHOUND, as it necessitates that new recruits have military experience before joining FOXHOUND. Mercenaries across the world, including Big Boss and the surviving members of the mercenary nation of Outer Heaven, also participated in granting Zanzibar Land its independence, which also acted as the reason why its independence movement was also referred to as the "Mercenary War." Solid Snake also underwent several conflicts as a mercenary after Operation Intrude N313, after leaving the CIA for reasons relating to distaste towards their methods.

Known mercenaries

 * Big Boss
 * Kazuhira Miller
 * Gray Fox
 * Solid Snake
 * Revolver Ocelot
 * Vulcan Raven
 * Jungle Evil
 * Night Fright
 * Running Man
 * Red Blaster
 * Black Ninja/Extraterrestrial Special Forces Unit
 * Dirty Duck
 * Machinegun Kid
 * Shotmaker
 * Fire Trooper
 * Solid Snake
 * Sergei Gurlukovich
 * Olga Gurlukovich
 * George Kasler

Trivia
An anonymous song made during the late 1990s that is attributed to mercenaries is known to the populace and is known as "If I Die in a Combat Zone." The lyrics of the song are as follows:

''If I die in a combat zone // Tell all the people in homeland // That I did my best. // If I die in a combat zone // Tell that pretty girl of mine // That I bring best memories with me. // If I die in a combat zone // Tell all my best friends // That I died facing the gun. // If I die in a combat zone // I don't need my name on grave. // Etch instead that there was; // A man who lived, fought and died.''

Unconformed history
Liquid Snake acted as a mercenary and a for-hire assassin as late as age 13.