Hwang Kee and the Moo Duk Kwan
Tang Soo Do's primary lineage runs through Hwang Kee (1914-2002), founder of the Moo Duk Kwan school. Hwang Kee's martial arts background was unusual - largely self-taught from books and observation, supplemented by study of Chinese Kung Fu during time spent in Manchuria, and informed by his study of the Shotokan Karate texts he encountered in Korea. He opened the Moo Duk Kwan in Seoul in 1945, immediately after Korea's liberation from Japanese occupation, teaching what he called Hwa Soo Do and later Tang Soo Do.
Tang Soo Do and Taekwondo share common roots but diverged through the politics of Korean martial arts unification in the 1950s-70s. When the Korean government pushed for unification of all Korean martial arts under the Taekwondo umbrella, Hwang Kee refused to merge the Moo Duk Kwan into the new organisation, insisting on maintaining Tang Soo Do's distinct identity and Chinese-influenced technical tradition. This decision preserved Tang Soo Do as a separate art but kept it outside the massive institutional support that propelled Taekwondo to Olympic status.
Chuck Norris and the American Tang Soo Do Tradition
Tang Soo Do's international profile was dramatically raised by Chuck Norris - the US martial arts champion and action film star who trained in Tang Soo Do while serving in the US Air Force in Korea in the early 1960s. Norris earned his black belt in Tang Soo Do and later his first black belt in Brazilian Jiu-Jitsu under the Machados, but Tang Soo Do remained his foundational art. His success in American tournament circuits and subsequently in film brought Tang Soo Do to international attention and drove a wave of school openings across the United States in the 1970s-80s.