 In this way, King Jan was aiming to gain social acceptance for an increased role for the prince, who he hoped would become the second most important person in the Commonwealth after himself.These efforts culminated in the fifteen-year-old prince fighting alongside his father against the Turks at the Battle of Vienna in 1683.In line with his parents ambitions for him, Prince James was a member of the Order of the Golden Fleece a Catholic order of chivalry which has been referred to as the most elite brotherhood in the Christian faith.