Ancient Art & Modern Mastery
The name Hapkido is believed to have been coined by Grand Master Ji Han Jae and given to a Martial Art with a long history believed to be reorganized and repopularized in Korea after WWII
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Hapkido Lineage
Japanese Takeda Sokaku Sensei known as the founder of Daito ryu Aiki Jujutsu is believed to have taught GM Yong Sool Choi in Japan during the Japanese occupation of Korea, period 1910-1945.
Hapkido Lineage
Grand Master Yong Sool Choi is believed to have learned Daito ryu Aiki Jujutsu from Takeda Sokaku Sensei in Japan during the Japanese-Korea occupation. Upon his return to Korea after the liberation of Korea, GM Choi is believed to have taught GM Ji Han Jae, among others.
Hapkido Lineage
GM Ji Han Jae is believed to have coined the name "Hapkido" and founded the Hapkido Sung Moo Kwan among other Hapkido organizations and taught many students world wide. Among GM Choi Yong Sool and GM Ji Han Jae students were GM Kwang Sik Myung, GM Myung Jae Nam, GM Hee Young Kim, GM Bong Soo Han, GM Kim Myuong Yong, GM Lee Chong Min, GM Oh Se Lim, and many others.
Hapkido Lineage
Grand Master Jae Sun Do, as a direct student of GM Hwang Kee, GM Chong Soo Hong, the Korean Taekwondo Association, the ROK Air Force, and the World Taekwondo Federation since the 1950s was equipped with an extensive arsenal of traditional "hoshinsool" prior to training directly with Korean Hapkido Jin Jung Kwan Association Founder GM Kim Myoung Yong since 1974. GM J.S. Do incorporated traditional Hoshinsool and JJK Hapkido when creating the WTHA one step self defense techniques and Hapkido curriculum between 1986-1989.
Hapkido Lineage
GM Frank R. Nelson is a multi Kwan 7th Dan, Korea Hapkido Federation, Korea Hapkido Total Association, and Korean Jin Jung Kwan Hapkido Association officially ranked Hapkido Master. In 1977-1991 while stationed overseas Master Nelson began his Hapkido training in "Founder" GM Ji Han Jae's original Hapkido style "Hapkido Sung Moo Kwan." At that time the art was referred to as "Eagle Claw Hapkido."
In 1977-1991 while stationed overseas Master Nelson began his Hapkido training in "Founder" GM Ji Han Jae's original Hapkido style "Hapkido Sung Moo Kwan." At that time the art was referred to as "Eagle Claw Hapkido." In fact the patch emblem was adorned with an eagle displaying its outstretched claws.

Master Nelson's experience and reputation led him to teaching refugees during the Serbian/Yugoslavian conflict and elements of the US Army First Infantry Division during the Persian Gulf War (ODS/ODS) 1990/91.
Upon returning from the Gulf War in 1991, Master Nelson continued his training with GM Jae Sun Do, the Korean Hapkido Total Association, the Korea Jin Jung Kwan Hapkido Association, the Korean Hapkido Federation, the American Hapkido Association, Korean exchange students from Kwangju City Chunnam Techno College, and several other prominent Hapkido Masters and organizations from 1991-2007.
GM Nelson was President of the International Advanced Martial Arts Association from 2000-2007.
GM Nelson's experience again led to teaching in Combat Theater: While deployed to the Iraq War (GWOT/OIF) 2008 to 2009 Master Nelson taught WTHA Taekwondo and Hapkido to U.S. and British Special Forces, Iraqi translators, Ugandan Republic Military Guards, and Soldiers at Combat Operation Base Speicher, Tikrit Iraq, and other US Soldiers during (GWOT/OEF) 2010-13.
Since 1977 GM Frank R. Nelson with a foundation in original Sung Moo Kwan Hapkido has had extensive training in the Korea Hapkido Federation, Korea Hapkido Total Association, and Korea Jin Jung Kwan Hapkido, periodic personal and distant training with real Sung Moo Kwan Hapkido, Sin Moo Hapkido, Jin Jung Kwan Hapkido, World Hapkido, International Hapkido, American Hapkido Association, and several others.
GM Nelson also trains with some of the world's top Hapkido Masters
With over 50 years of combined training and experience GM Nelson integrates the technical skills of multiple Kwans and the WTHA creating a World Class curriculum with World Class credentials.