A professed believer who maintains religious opinions contrary to those accepted by his or her church or rejects doctrines prescribed by that church. Roman Catholic Church. a baptized Roman Catholic who willfully and persistently rejects any article of faith.
I think it was in 1964, that was when direct army confrontation happened. This was followed by several more conflicts that made use of heavy fighting naval and aircraft with the Gulf of Tonkin resolution that made military measures necessary. There were an estimated 40, 000 deaths and 20, 000 other casualties.
I think they moved to new regions and set up Muslim communities
Look up the answers online