Gihae Eastern Expedition
| Korean campaign against Tsushima |
| Japanese name |
| Kanji |
応永の外寇 |
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| Korean name |
| Hangul |
대마도 정벌 |
| Hanja |
對馬島征伐 |
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| Alternate Korean name |
| Hangul |
기해동정 |
| Hanja |
己亥東征 |
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Ashikaga Japan
The Ōei Invasion (応永の外寇, Ōei no gaikō?), known as the Gihae Eastern Expedition (기해 동정) in Korea, was a 1419 invasion from Joseon against pirate bases on Tsushima Island, which is located in the middle of the Tsushima Strait between the Korean Peninsula and Kyushu.
The Japanese identifying phrase derives from the Ōei era (1394–1428), which is the Japanese era name (nengō) of the calendar system then in use in Japan. The corollary Korean identifying title derives from Gihae in the Chinese sexagenary cycle of the calendar system then in use in Joseon. In both, the terms are explicit equivalents for the Gregorian calendar year of 1419.
From about 1400, despite its incorporation into the Japanese political order (this incorporation was however limited, to the point that Japanese authorities, regional and national, were unable throughout most of Japanese history to control and limit pirate activity originating in this area) before the Goryeo, Tsushima were located on the front lines that defended Japanese territory for much of its history. Historically, a large part of Tsushima's economy was sustained by trade with Korea; it was used as a "frontier territory" and a diplomatic meeting place between Korea and Japan, but was considered historically by Koreans as a vassal or dependent state of Korea, and despite a variety of changes in terminology over the ages designed to indicate its status as being in the Japanese sphere of influence, it was considered by many Koreans to be Korean land under foreign occupation.
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Wikipedia
Joseon Korea
