 He is also responsible of introducing Karatedo to the military forces of the Dominican Republic, training them in self-defense and competitive Karate.Felton Messina was also coach of the Dominican Karate Team training them, in various occasions, to go to the Panamerican and World karatedo tournaments, where his students won in several occasions.He was the first Dominican to write a book about Karatedo (specifically about the style Nihon Koden Shindo Ryu), published in 1979.