Charles began training in martial arts in 1980. Over the ensuing decades, he has trained in several styles of karate, aikido, taijitsu, jujitsu, and budo arts. He discovered Historical European Martial Arts (HEMA) in 2008. He joined the Meyer Freifechter Guild (MFFG) in 2009 and founded the Grünberg Freifechter as a study group of the MFFG in early 2010. The group has been focusing on Dr. Forgeng’s translation of Joachim Meyer’s 1570 multi-weapon treatise entitled “The Art of Combat”. Charles has taught classes at the Meyer Symposium, Purple Heart Armory Open, Fechtschule New York, Fechtschule Frisbee, Longpoint, and Iron Gate Exhibition (IGX). He has medaled in spear, dagger, wrestling, and longsword.