At the end of the 90's, Olivier Pierfederici, a former-parachutist with the French Army, instructor with the Special Forces of the Army and Navy and security professionals in Uruguay, Argentina and Germany, devised the S.O.G. (System for Operational Groups). This practical system guided by street combat, synthesizes the effectiveness and discipline from the Body-to-Body system of the French armed forces, the fluidity, speed and roguery of Penchak Malay Silat as well as bodyguard techniques.