Korean History › Opening & Korean Empire › Treaty of Ganghwa (Japan–Korea Treaty of 1876)
Imo Incident
July 1882· Event· Wars & invasions
Well documentedSolid records, physical evidence or scientific consensus.
An 1882 mutiny of unpaid Seoul soldiers that briefly restored the Daewongun and brought Chinese and Japanese troops into Korea.
See it on the Korean History map →What happened
In July 1882 soldiers of Seoul's old army units, unpaid for over a year, were handed rice rations mixed with sand. The Imo Incident (임오군란) followed: they killed officials and a Japanese military instructor, attacked the Japanese legation, whose staff fled home, and stormed the palace; Queen Min escaped in disguise. The Daewongun, seen as their patron, briefly returned to power. China sent several thousand troops, seized him and took him to Tianjin. Japan won an indemnity and the right to station legation guards.
Why it matters
It put Chinese and Japanese soldiers on Korean soil and made Qing China an active overseer of Korea's government, through officers such as Yuan Shikai.
How we know
Korean court records, Japanese legation reports, the Treaty of Chemulpo (1882) with Japan, and the Sino-Korean trade regulations of the same year.
Still debated
How far the Daewongun organized the mutiny, rather than riding it, is debated.
Connections (2)
▸Treaty of Ganghwa (Japan–Korea Treaty of 1876) set the stage for Imo IncidentMostly agreed
The connection
Opening brought a Japanese-trained new army unit (Byeolgigun), paid and equipped better than the old units, while rice exports to Japan pushed up prices in Seoul. When old-army soldiers, unpaid for months, got spoiled rations, their anger hit both the officials in charge and the Japanese.
When and how
Seoul, 1881–1882; the Byeolgigun was formed in 1881 under Japanese instructor Horimoto Reizō.
How sure are we?
Court records and Japanese legation reports describe the soldiers' grievances and targets.
Debates and open questions
How far anti-Japanese feeling, versus unpaid wages and corruption, drove the mutiny is debated.
▸Imo Incident brought Qing troops who later crushed Gapsin CoupWell documented
The connection
The Qing troops sent in 1882 stayed in Seoul, and China tightened control, with Yuan Shikai acting almost as a resident governor. The reformers struck in 1884 after half those troops left to fight France; the remaining garrison, led by Yuan, retook the palace within three days.
When and how
Seoul, 1882–1884; about 1,500 Qing troops remained in late 1884, under Wu Zhaoyou and Yuan Shikai.
How we know
Chinese, Japanese and Korean records of the fighting at Changdeokgung on December 6, 1884.
Debates and open questions
Whether the plotters underestimated the remaining Qing strength or trusted Japanese promises of support is debated.