Country of Origin: United States
No military in the world sees more action in more places than the United States Marine Corps. The average marine has been in at least two combat engagements per year since 1775. As a result, the Marine Corps' close combat program has been incorporating techniques from the various countries they've killed people in, culminating in the "Marine Corps Martial Arts Program," or "MCMAP."
Among the marines themselves, though, it is known as 'Semper Fu,' which is a name even Max Fightmaster could be proud of. The modern program also teaches the use of improvised weapons, bayonets, and parts of the gun other than the bullets.
Before MCMAP came along, the marines had something called the LINE System (Linear Infighting Neural Override Engagement) which was invented in the 1980s. MCMAP was formed in 2001 because marines were increasingly being used in situations that didn't require them to kill their opponents, and that was the only thing LINE was good for.
Now, when you use a MCMAP move on somebody, each move typically has the option to utterly destroy whatever body part you have in your hands or just put it in excruciating pain...or both, thus leading to a kinder, friendlier Marine Corps that only sometimes kills you.
Source : cracked.
