Editing Toyotomi Hideyoshi (section)

=== First campaign against Korea ===
{{Main|Imjin War}}

In the first campaign, Hideyoshi appointed [[Ukita Hideie]] as field marshal, and had him go to the Korean peninsula in April 1592. [[Konishi Yukinaga]] occupied [[Seoul]], which was the capital of the [[Joseon]] dynasty of Korea, on June 19. After Seoul fell, Japanese commanders held a war council in June in Seoul and determined targets of subjugation called ''Hachidokuniwari'' literally, [[:ja:文禄・慶長の役|Eight(八) Route(道), Country(国) Division(割)]]. Each targeted province was attacked by one of the army's eight divisions:
* [[Pyeongan]] by the First Division led by [[Konishi Yukinaga]].
* [[Hamgyong Province|Hamgyong]] by the Second Division led by [[Katō Kiyomasa]].
* [[Hwanghae]] by the Third Division led by [[Kuroda Nagamasa]].
* [[Gangwon Province (historical)|Gangwon]] by the Fourth Division led by [[Mōri Katsunaga]].
* [[Chungcheong]] by the Fifth Division led by [[Fukushima Masanori]].
* [[Jeolla]] by the Sixth Division led by [[Kobayakawa Takakage]].
* [[Gyeongsang]] by the Seventh Division led by [[Mōri Terumoto]].
* [[Gyeonggi]] by the Eighth Division led by [[Ukita Hideie]].

Within four months, Hideyoshi's forces had a route into [[Manchuria]] and had occupied much of Korea. The Korean king [[Seonjo of Joseon]] escaped to [[Uiju]] and requested military intervention from China. In 1593, the [[Wanli Emperor]] of [[Ming dynasty|Ming China]] sent an army under general [[Li Rusong]] to block the planned Japanese invasion of China and recapture the Korean peninsula. On January 7, 1593, the Ming relief forces recaptured Pyongyang and surrounded [[Seoul]], but [[Kobayakawa Takakage]], [[Ukita Hideie]], [[Tachibana Muneshige]] and [[Kikkawa Hiroie]] were able to win the [[Battle of Byeokjegwan]] north of Seoul, in modern day Goyang City. At the end of the first campaign, Japan's entire navy was destroyed by Admiral [[Yi Sun-sin]] of Korea, whose base was located in a part of Korea the Japanese could not control. This destroyed Japan's ability to resupply their troops in Seoul, effectively ending the invasion.