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 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.