H.K.D. stands for the three Korean martial arts of hapkido, hankido and hankumdo.
Hapkido is a martial art that is a accumulation of many oriental styles. Hapkido’s roots can be traced back to both Japanese, Korean and Chinese martial arts. It was Choi Yong-sul who started teaching a Japanese style in the city of Daegu just before the Korean war. The style evolved and his students added techniques they had learned elsewhere. This is one of the reasons why there are many styles of hapkido and many organisations. Grandmaster Myung Jae-nam, started learning martial arts from his grandfather and a local teacher at a young age. He learned ssireum (Korean wrestling) and stick fighting. He later moved to Seoul and joined the hapkido movement. After his move to Incheon he formed his own hapkido organisation. This is wear master Ko Baek-yong started learning hapkido.
After his move to Incheon Myung Jae-nam soon started working on his own adaptation of hapkido. He created a style that relied less on the practitioner’s own strength and more on the correct use of three guiding principles. These principles are known in Korean as won, yu and hwa, circle, flow and harmony. Although in looks sometimes quite similar to aikido, hankido is a martial art that is more than just a mix of hapkido and aikido techniques. Nobody denies the similarities but the differences are often bigger than one would suspect. All in all hankido is a Korean martial art that is a complete system of its own. Master Ko Baek-yong is one of the few masters who was involved with the creation of hankido from the beginning.
Hankumdo (sometimes spelled as hangumdo) is a martial art that started out as a part of the hankido curriculum but was later set apart as a separate martial art. In 1996 Myung Jae-nam introduced a new method to teach sword skills using the Korean writing system called hangul. The 24 letters of the alphabet are used as a reference for 24 combinations of sword techniques. This makes it easy for Koreans, who are already familiar with hangul, to practice their techniques in a systemised fashion. For foreigners it adds the extra value to become acquainted with this remarkable piece of Korean culture. Hankumdo is however more than just waving your sword in the air to write Korean.