Pencak Silat Indonesian island, and displays the greatest diversity of techniques. Many Javanese schools such as Perisai Diri and Inti Ombak have been established internationally in Asia, Europe and America. Merpati Putih or "white dove" style was developed in the keraton (royal courts) of 17th century Mataram and was not taught publicly until 1963. Today it is the standard unarmed martial art of the Indonesian National Armed Forces. It includes weapons but focuses more on empty-handed self-defense and the development of internal strength developed through breathing techniques. Pencak silat in Java draws from traditional kejawen and Hindu-Buddhist Javanese beliefs but after Indonesia's
Pencak Silat sword, which is still used in Java. The earliest evidence of pencak silat being taught in a structured manner comes from 6th-century Riau from where it spread to the Minangkabau capital in West Sumatra. The Minangkabau had a clan-based feudal government. Military officers called "hulubalang" acted as bodyguards to the king or "yam tuan". Minang warriors served without pay. The plunder was divided among them according to military merit, so fighters strove to outdo each other. They were skilled horsemen with the native pony and also expert bladesmiths, producing arms both for their own use and for export to Aceh.