The Oei Invasion was the 1419 invasion of the Tsushima Island led by the Joseon Dynasty. Japanese writing Kanji 漢字 Kana 仮名 Hiragana 平仮名 Katakana 片仮名 Uses Furigana 振り仮名 Okurigana 送り仮名 Romaji ローマ字 Category Kanji (   漢字[?], literally Han characters) are Chinese characters used in Japanese. ... For other meanings, see Hepburn (disambiguation). ... Hangul (한글) is the native alphabet used to write the Korean language, as opposed to the Hanja system borrowed from China. ... Hanja (lit. ... McCune-Reischauer is one of the two most widely used Korean language romanization systems, along with the Revised Romanization of Korean, which replaced (a modified) McCune-Reischauer as the official romanization system in South Korea in 2000. ... The Revised Romanization of Korean is the official Korean language romanization system in South Korea. ... The Tsushima Islands (Korean Daemado) are situated wholly in the Korea Strait, East and South-east of the Korean Peninsula and between the Japanese mainland due west of the Kanmon Strait which divides Honshu from Kyushu, and which also connects Korea / Tsushima straits to the Inland Sea. ... The Joseon Dynasty (alternatively, Chosun, Korean: 조선왕조, Hanja: 朝鮮王朝) was the final ruling dynasty of Korea, lasting from 1392 until 1910. ...

Background

From the end of the Goryeo Dynasty to the beginning of the Joseon, the coastal regions of Korea were often the subject of Wokou raids. The Joseon Dynasty ordered a strengthening of Korean naval defenses, a strategic response to the constant threat posed by the pirates. The Goryeo kingdom ruled Korea from the fall of Silla in 935 until the founding of Joseon in 1392. ... Jump to: navigation, search Korea (Hangul: 한국, Hanguk, used by South Korea; 조선, Joseon, used by North Korea) refers to South Korea (Republic of Korea) and North Korea (Democratic Peoples Republic of Korea) together, which were a unified country until 1945. ... 16th century Japanese pirate raids. ...

Joseon subsequently asked the Ashikaga shogunate and its deputy on Kyushu to suppress the activity of the pirates, favoring legitimate traders. In exchange for certain privileges, it gave authority to So Sadashige (the de facto ruler of Tsushima Province) over ships sailing from Japan to Korea. So Sadashige died in 1418, but power was seized from Sadashige's infant son Sadamori (Tsutsukumaru) by Soda Saemontaro, a powerful pirate leader. Suffering from famine, pirates on Tsushima invaded Ming China in 1419 and Korea's Chungcheong and Hwanghae provinces. The Ashikaga shogunate (Jp. ... Kyushu region, Japan Kyushu (九州) is the third largest island of Japan and most southerly and westerly of the four main islands. ... Tsushima (対馬, Korean Daema) was a province of Japan until the abolition of provinces and establishment of prefectures. ... Jump to: navigation, search The Ming Dynasty was the ruling dynasty of China from 1368 to 1644. ...

After receiving reports of these incidents, the Korean court proposed an invasion of Tsushima. While King Sejong supported a defensive policy, Taejong, who had abdicated his throne in 1418 but was still a military adviser, favored a more offensive approach. He ordered Yi Jong Mu to invade Tsushima. King Sejong the Great (May 6, 1397 - May 18, 1450), born I Do, was the fourth ruler of the Joseon Dynasty of Korea from 1418 to 1450. ... King Taejong was the third king of the Joseon Dynasty in Korea and the father of King Sejong the Great. ... Yi Jong Mu (1360–1425) is a Korean general who led the Oei Invasion, the invasion of the Japanese Tsushima Island in 1419. ...

Raid

Yi Jong Mu's fleet of 227 ships and 17,285 soldiers set off from Koje Island toward Tsushima on the 19the month of the 6th month, 1419. The following day the fleet landed in Aso Bay, and the soldiers proceeded the conquest of Tsushima and won several skirmishes, and burned down 2,000 buildings, before heading for Funakoshi. On the 26th day, however, a division of Korean army was defeated by Japanese soldiers in an ambush at Nii where about 200 men were lost. The victory is known to Japaneses as the "Battle of Nukadake" (糠岳の戦い). Geoje is a city located in South Gyeongsang province, just off the coast of the port city of Busan, South Korea. ...

Despite lose of about 200 men, Yi suceeded in subduing Tsushima in 10 days. Accepting surrender of locals, the Korean fleet returned from Tsushima to Koje Island on the 3rd day of the 7th month.

Yi's cunquest of Tsushima was considered a success in Joseon as it suceeded in freeing Chinese and Korean hostages captured by Japanese pirates and also puts an temporary end to raids of Japanese pirates on Ming and Joseon.

Aftermath (according to Japanese Source)

On the day that Yi Jong Mu returned to Koje, pirates returning to Tsushima appeared off the coast of Hwanghae Province. Taejong prepared to re-invade Tsushima before the army returned, but instead demanded Tsushima's submission diplomatically. Yi Jong Mu (1360–1425) is a Korean general who led the Oei Invasion, the invasion of the Japanese Tsushima Island in 1419. ...

In Kyoto, rumors of the invasion spread around the end of the 6th month. The raid was associated with the Mongol Invasions of Japan. On the 7th of the 8th month, Shoni Mitsusada, the overlord of the So clan, reported to the Ashikaga shogunate that the Shoni's deputy So Uemon had defeated Korean invaders. However, Korean captives were reported to have stated that the Ming were planning to invade Japan. Since Shogun Ashikaga Yoshimochi took a harder stance toward the Ming than his father Yoshimitsu, the threat was taken seriously by the shogunate. Later, the shogun received a report from the Kyushu Deputy. Since it was considerably different from the Shoni's version, the shogun felt the necessity of examining Korea's real intentions. This page is about the city Kyoto. ... The Mongol invasions of Japan (元寇, Genkō) of 1274 and 1281 were major events of macrohistorical importance, despite their ultimate failures. ... Sō (宗氏 Sō shi) was a Japanese clan that ruled the Tsushima Islands from the Kamakura period to the end of the Edo period. ... In Japanese history, a shogun (将軍 shōgun) was the practical ruler of Japan for most of the time from 1192 to the Meiji Era beginning in 1868. ... Ashikaga Yoshimochi (Jp. ... Kinkaku, the Golden Pavilion at Kinkaku-ji, originated as the villa of Ashikaga Yoshimitsu. ...

In a letter to So Sadamori issued on the 15th of the 7th month, the Joseon claimed that Tsushima belonged to Gyeongsang Province and asked him to leave the island, either by coming to the Korean Peninsula or by retreating to mainland Japan. In the 9th month, a man who claimed to be an envoy of So Sadamori arrived in Korea. The conditions he presented seemed unsatisfactory to the Joseon. Taejong made similar demands of the envoy in the 10th month. According to the article on the 10th day of the first leap month of 1420 of Sejong Sillok, the same self-claimed envoy verbally agreed to Korea's proposal to put Tsushima under the rule of Gyeongsang Province. On the 23rd of that month, the Korean court approved of this agreement. However, in the later negotiations it was revealed that the envoy was not actually a representative of So Sadamori. Gyeongsang (Gyeongsang-do) was one of the eight provinces of Korea during the Joseon Dynasty. ...

In the 11th month of 1419, envoys of Ashikaga Yoshimochi visited Korea. In return, King Sejong sent Song Gig-yeong to Japan on the 15th day of the first leap month of 1420. He left Busan on the 15th day of the 2nd month. On the 21st he met Soda Saemontaro on Tsushima as So Sadamori stayed with the Shoni clan in Hizen Province. He arrived in Kyoto in the 4th month. Having accomplished his mission, he left Kyoto in the 6th month, returning to Korea after completing negotiations with the Shoni and So clans in Kyushu. He arrived in the capital in the 10th month, 1420. The article incorporates text from OpenHistory. ...

This trip corrected mutual misunderstandings between Japan and Korea. In Tsushima, Song received a protest from Soda Saemontaro over a Korean document that stated Tsushima's dependence on Korea. He warned of the Shoni clan's possible military action. Song realized that So Sadamori had not been involved in the previous negotiations, and also learned of the So clan's vassalage to the Shoni clan. These realisations overturned Korea's plans towards Tsushima. In Kyoto, Song clarified that the Joseon had no intention of invading Japan by order of the Ming. On their way back, Korean envoys faced the So and Shoni's hard-line attitude toward the Joseon.

In the 4th month of 1421, a letter under the name of So Sadamori demanded the return of Japanese captives and pointed out the groundlessness of Korea's claim over Tsushima. It is noted that the Japanese envoy took advantage of the shogunate's authority, which can frequently be found in the So clan's later diplomatic talks with Korea. By the order of Taejong, Korea took a tough stance against the So clan. Although Soda's messengers visited Korea several times, they did not reach a settlement until 1423. The death of the hard-line Taejong in the 5th month of 1422 softened Korea's policy toward Japan. Under Sejong, the Joseon gave up Tsushima and decided to grant trade privileges to the So clan in exchange for its duty to maintain trade order. King Sejong the Great (May 6, 1397 - May 18, 1450), born I Do, was the fourth ruler of the Joseon Dynasty of Korea from 1418 to 1450. ...

See also

• List of Japan-related topics
• List of Korea-related topics
• History of Japan
• History of Korea