Famous practitioners: The United States Marine Corps
Known amongst Marines as Semper Fu, McSlap, McNinja, and New Bushido, the Marine Corps Martial Arts Program is a hybrid of just about every martial art in existence and is an ever-evolving buffet of fists, feet, chokes, and throws honed by soul-crushing workouts that would make Sgt. Slaughter weep red, white, and blue tears. Supplemental instruction includes practicing bayonet drills, learning to fight with an unloaded weapon, and improvising combat techniques, which make masters of this martial art (high-ranking Marine officers) the most dangerous elements on the battlefield that aren’t hollow-pointed. USA! USA! USA!