Since the 1970s, there has been a revival of traditional or reconstructed methods of swordsmanship (劍術 geom sul, or 劍法 geom beop) based on the Korean sword in South Korea (Korean Bon Kuk Geom Beop 본국검법 "National Sword Methods"), supplementing and influencing the creation and practice of Kumdo (the Korean martial art influenced by Japanese Kendo and Muyedobot'ongji). There are historical sources on which such reconstructions are based, dating to the 17th and 18th centuries, notably the Muyejebo (“Martial Arts Illustrations”) of 1610, its 1759 revision Muyeshinbo, supplemented with 12 additional fighting methods by Prince Sado who originated the term Sip Pal Ki (“Eighteen Fighting Methods”), and the renewed revision of 1790, Muyedobotongji.

Korean sword practice entails the study and use of one or more of five sword architectures: the single-handed sabre (To); the single-handed sword (Geom); the two-handed saber (Ssangsoodo); the Spear Sword polearm (Hyup Do); and the Glaive polearm (Wol Do).Comprehensive Illustrated Manual of Martial Arts; YI Duk-moo1 & PARK Je-ga (1795); Trans: KIM Sang H; Turtle Press 2000

Any of these weapons can be studied following one of two disciplines. The study of Korean sword as a weapons system is commonly called Geom Beop ("sword methods") while the use of sword study as a form of personal development or sport is commonly called Geom Do (검도, 劍道) "Way of the Sword") which is adaptation of Japanese Kendo (剣道). In either case, additional equipment and practices have been added to further the study and safety of the subject. These include but are not limited to body armor (Ho-gu, Japanese: Bōgu) bamboo swords (Juk-To, Japanese: Shinai) and wooden swords (Mok-Geom, Japanese: bokken) and a range of materials for piercing or cutting.

Historical background

Early history Production of Korean swords starts in the 4th century with the Hwandudaedo or "ring-pommel swords". No direct accounts of swordsmanship during the Three Kingdoms of Korea are extant, but there are 12th-century historiographical works (Samguk Sagi, "History of the Three Kingdoms" by Kim Bu-sik, 1145; Samguk Yusa, "Memorabilia of the Three Kingdoms") which attest that systematic training of martial skills existed in each of the three early Korean states.

Archaeological evidence suggests that straight double-edged and single-edged swords remained prominent during the North South States Period. But with the beginning of the Goryeo era (10th century), advances in metallurgy led to the abandonment of the straight sword in favor of the curved blade.

Joseon era The earliest written sources on military training in Korea date to the 17th century. An organized approach to Korean sword was documented in the Army Account of Military Arts and Science (), a Ming dynasty strategy book written in 1629 by Mao Yuanyi. In his work, Mao identifies Korean fencing () as a series of sword methods originating from the area of Korea. Mao reports that these methods had been brought to China during a time when Chinese sword work had declined and were ascribed to about the 9th century by Mao, or about the time nearing the end of the Unified Silla Period.

The traditional straight type was revived as a type of "dress sword," carried as a badge of office by scholars and bureaucrats during the Joseon Dynasty (1392-1897). With the rise of Neo-Confucianism in Korea during the 16th century, long and pointed items came to be seen as "aggressive" by Confucian standards. these swords were commonly short, single-handed weapons with blunted tips. Often heavily decorated, these items tended to be more symbolic, but could be pressed into service for self-defense. Among the Military, curved, single-handed sabers (To) were the preferred side-arm.

The Muyejebo ("Martial Arts Illustrations") was published in 1610. This is the oldest native Korean martial arts manual. It was commissioned by King Sunjo (1567-1608), and compiled by one of the king’s military officers, Han Kyo. It covered six disciplines, including the Ssangsudo or "two-handed sabre."

The Joseon military was described by Hendrick Hamel in 1667, who observed that, "The horsemen always wear a suit of armor and helmet. They carry a sword, a bow and arrows and a kind of flail with sharp points. The soldiers wear suits of armor and helmets, have muskets, swords and short pikes and carry 50 shots... Each city appoints a number of monks from the monasteries in its surroundings to maintain the fortresses and strongholds in the mountains. In times of great need these monks are used as soldiers. They are armed with sword, bow and arrows."Hamel's Journal And A Description Of The Kingdom Of Korea 1653-1666;Royal Asiatic Society, Korea Branch, 2005; Korean sword-work had plainly fallen to being only one of many options for the Korean warrior.

During the reign of King Youngjo (1724–1776), the Muyejebo was revised and supplemented with 12 additional fighting methods by Crown Prince Sado, as the Muyesinbo (1759). The sword features more prominently in this compilation, supplementing the older Ssangsudo section with coverage of the Yedo (short sword), Bonkuk geom ("national sword"), Ssang geom (twin swords) and four variants of Japanese swordsmanship

King Cheongjo (1776–1800) had the Muyesinbo revised by Park Je-ga and Lee Duk-moo, supplemented with six equestrian disciplines, and published 1790 as the Muyedobotongji. Of special note is the introduction by the editors, included to address a variety of shortcomings noted in the introduction to the work. These diagrams, found at the end of chapters, structured training into a succession of techniques and have often inspired the execution of the material in each chapter as a single form (hyeong) rather than a series of techniques.Comprehensive Illustrated Manual of Martial Arts; YI Duk-moo1 & PARK Je-ga (1795); Trans: KIM Sang H; Turtle Press, 2000; Introduction pp. 18–19

Modern history Traditional Korean swordsmanship fell into decline with the modernization of the army, beginning as King Kojong hired Japanese Lt. Horimoto Reizo to train the Pyolgigm, or "Special Skills Force" to march and shoot in European fashion in 1881. And in 1883, Japan accepted 40 Korean candidates for enrollment in various Japanese schools of commerce and technology. Half of this number were also enrolled in the Toyama Military Academy to be trained as officers for duty in the future Korean army. Distracted by events in other parts of the World, Western influences on the development of Korean Military Science lost out to Japanese designs. In this way, developments in Japan regarding sword practice had immediate impact on Korean sword practices. As Japan had adopted German and French sabre material for their Police forces, these practices were implemented with the Korean Police following the Kabo Reforms of 1894. Korean police cadets at the Kyongmuchong or Police Academy were required to learn Kyok Geom (Japanese Gekki ken aka kenjutsu) as one of its training subjects.

Japanese found the use of European single-handed sabers inadequate against Japan's larger Russian adversaries in the Russo-Japanese War (1905-5) and in 1933 re-instituted the two-handed saber as the official Japanese sidearm for officers and non-commissioned officers. Koreans associated with the Japanese such as Korean Police and Military Officers-in-training did likewise. With the occupation of Korea by Japan in 1910, Japanese sword practices increasingly supplanted Korean sword work in the urban areas. This was enhanced by the acceptance of Kendo in the Korean educational system in 1931 as well as a series of high-profile competitions between Korean and Japanese players during the 1930s and 1940s.

In 1920, the Choson Chaeyukhoe (Choson Athletics Association) was established, and a year later, Kang Nak-won opened Choson Mudogwan, the country's first private school to teach Kumdo exclusively. Japanese Military sword was also reinforced by the efforts of Japanese sword master Nakamura Taisoburo who was stationed in Manchuria at this time. Drawing on the calligrapher's repeated practice of the character "Ei" with its eight basic strokes, Nakamura develops Ei-Ji Happo (literally: "8 Laws of the Character Ei ") as a drill for practicing the basic cuts and thrusts of his sword material. This would later be formalized into "Happo-giri" (literally: "Eight Directions of Cutting") and become an integral part of his style, Nakamura-Ryu Batto-jutsu.

In the modern Republic of Korea, Kendo, as in the case of other Japanese elements, remained in Korean culture albeit renamed as Kumdo with little or no emphasis on its Japanese connections. Early efforts to resurrect traditional Korean practices such as Ssireum (wrestling), Taek Kyon (Martial Sport) and Geom Beop (sword method) was part of the discourse on post-1945 Korean nationalist historiography and encountered strong opposition by elements in Korean Society that felt such practices recalled anachronistic culture of pre-Occupation Korea.

Changes in the political fortunes in Korea since the 1980s, including the easing of repressive governmental oversight, has allowed for a renewed interest in practices and traditions of Koreas' Martial past, producing a number of groups who seek to showcase these activities, such as the Sib Pal Gi Preservation Society (2001).

Joseon era swordsmanship The study of Korean sword study is conducted in a variety of practices including exercises and drills, single person form, two-person form and validation cutting. Seen as a zero-sum circumstance, the excess of any one element can only mean a deficit concerning the other two elements. In each case, an activity is meant to instill in the swordsman a near-reflexive ability to assess a circumstance and execute the appropriate meld of these elements to produce the intended outcome. For this reason practitioners rely heavily on the use of cutting targets of various materials to demonstrate successful outcomes concerning any particular technique.Hwarang Kumdo Student Manual; Korean Hwarang Kumdo Association, 2001; p. 8–9

Noticeably absent in the Korean sword methods are tactics and strategies associated with individualized engagements such as dueling as found in European and Japanese traditions. Though not unfamiliar with affairs of honor, Korean culture is dominated by Buddhist and Neo-Confucian thought, both of which proscribe the use of violence. Therefore, Korean swordwork can be said to have been shaped primarily by Military practice and utilized most often in a melee environment requiring awareness of a variety of vectors and angles apart from directly to the front.

A cursory examination of Bon Kuk Geom Beop reveals that of the 26 sword methods, 5 are thrusting methods and 15 are cutting or slashing methods. In like manner Military sword work introduced to the Korean Military during the Japanese Occupation (Toyama Ryu) is also heavily skewed in favor of cutting over thrusting. Lastly, techniques associated with Korean Geom Beop reveal a ratio of roughly 12 cutting techniques to 4 thrusting techniques.

The use of the shield was not successfully integrated into the Korean Military despite its mention in a variety of Korean historical manuals. Korean sword, then, integrates a variety of parries which are intended to redirect the opponent's attack and produce an opportunity (K. Teum) for the defender to counter the attack. These parries are most often accomplished with the use of the spine of the sword or the sides of the blade rather than with the blade edge.Hwarang Kumdo Sword Manual; Korean Hwarang Kumdo Association, 1996; pp. 116–163

Bon Kuk Geom Beop