Hamgyong campaign

Infobox Military Conflict
conflict=Hamyong Campaign
date=Fall of 1592


place=Korean peninsula
result=Japanese victory
combatant1=Joseon army
combatant2=Japan
commander1=Han Kuk-ham
commander2=Kato Kiyomasa
strength1=7,000 (est.)
strength2=20,000
casualties1=almost all
casualties2=2000 (est.)
notes= The Hamgyong Campaign also known as Kato Kiyomasa's Northern Campaign, is Kato Kiyomasa's invasion of the North-Eastern part of Korea, during the Japanese invasions of Korea (1592-1598), which occurred mainly in the former Hamgyong Province but included his fight with the Jurchen in the South-eastern part of Manchuria in the actual Jilin Province. The campaign was largely successful for the Japanese, however Kato's invasion of Jurchen territory was the only time Japanese forces ever reached China and after the campaign, the Japanese army eventually retreated because of supply problems (largely due to Admiral Yi's logistical attacks), uprisings of irregular Korean forces, and the help of the allied Ming China.

After crushing small Korean armies, Katō's first real resistance was at Haejungchang. Katō met Northern Korean Contingents, who were renowned as elites among the Korean army. Korean cavalry charged the field and smashed Kato's army as a whole, inflicting much damage upon the Japanese army.

Katō fell back to Haejungchang, a rice storage, built cover from rice pouches and kept the Koreans at bay with arquebuse fire. Feeling confident about the first victory, the Korean commander ordered the cavalry to charge and harass the enemy under cover. Katō replied by heavy arquebus fire behind a 'rice wall' and forced the Koreans back to a nearby hill. After nightfall, Katō silently led his troops to the foot of the hill. He then ordered an attack from three sides and destroyed the Korean army.

Katō then marched toward northeastern China, leaving the coast, and after the Battle of Songjin, captured two Korean princes who were sent down south with an escort of 1,000 Japanese soldiers as a negotiation condition. After crossing the Tumen River, Katō arrived in northeastern China, which was outside the reach of Chinese authorities and where the Jurchens ruled. Here Katō attacked a Jurchen fortress and took it by heavy arquebus fire. The next day the Jurchens retaliated against the Japanese with 10,000 troops. The Japanese were practically surrounded by the Jurchen cavalry and after managing to pull out of the Jurchen attacks, Katō quickly retreated back across the Tumen River. This would be the first and last time Katō and the Japanese ever stepped outside Korea during the war. It is interesting to note that Japan never reached China - their strategic goal - after this.

Hamgyong Campaign

Below is a list of the Korean castles captured by Kato.

#Battle of Haejeongchang (Hangul : 해정창) (18 July 1592*), or Kuradokoro (now Kimch'aek)
#Capture of Kilchu (Hangul : 길주, Hanja : 吉州)
#Capture of Myŏngch'ŏn, Hanja : 明川)
#Capture of Puryŏng (Hangul : 부령, Hanja : 富寧)
#Capture of Hoeryŏng (Hangul : 회령, Hanja : 會寧) (23 July 1592*)
#Kato Kiyomasa's fight with the Jurchen : The "Battle of Yanji" (24 July 1592*).
#Capture of Onsong

Kato Kiyomasa's occupation of Hamgyong Province

Korean revolts included Chung Mun-Pu Three Consecutives Victories : Kilchu, SsangPo and Tanch'ŏn

#Capture of Kyŏngsŏng (Hangul : 경성, Hanja : 鏡城) (September 16th 1592*)
#Battle of Kilchu (Hangul : 길주성, Hanja :吉州城) (October 30th 1592*)
#Battle of Hamhung (Hangul : 함흥) (November 10th 1592*)
#Capture of Iwon (Hangul : 이원) (November 12th 1592*)
#Battle of Ssangpo (Hangul : 길주 쌍포) (December 10th 1592*)
#Battle of Kilchu (Hangul : 길주 남문밖) (January 19th 1593*)
#Capture of Tanch'ŏn (Hangul : 단천, Hanja : 端川) (January 23rd 1593*)
#The Fall of Kilchu (Hangul : 백탑교) (January 28th 1593*)

Notes

(*) According to the Chinese Lunar Calendar.