One of Rama V's reforms was to introduce a Western-style law of royal succession, so in 1910 he was peacefully succeeded by his son Vajiravudh, who reigned as Rama VI. He had been educated at Sandhurst military academy and at Oxford, and was an anglicized Edwardian gentleman. Indeed, one of Siam's problems was the widening gap between the Westernized royal family and upper aristocracy and the rest of the country. It took another 20 years for Western education to permeate the bureaucracy and the army.