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French campaign against Korea, 1866
(The byeong-in yang-yo)
Second Battle of Ganghwa
Date October-November 1866
Location Predominantly Ganghwa Island, some small engagements on the Korean Peninsula
Result French withdrawal; Korea confirms its isolationism
Joseon Dynasty Korea France
Heungseon Daewongun
Yang Heon-su
Pierre-Gustave Roze
unknown 600
Casualties and losses
unknown 3 dead, 35 injured
Korean name
Hangul 병인양요
Hanja 丙寅洋擾
Revised Romanization Byeong-in yangyo
McCune–Reischauer Pyŏng‘in yangyo

The French campaign against Korea of 1866 is also known as Byeong-in yangyo (Western disturbance of the byeong-in year). It refers to the French invasion of Ganghwa Island in Korea in retaliation for the earlier execution by Korea of French priests proselytizing illicitly in that country. The encounter, which lasted nearly six weeks, was the first armed encounter between Korea and a Western power. The overall result was a French retreat and a check on its influence in the region. The violent encounter also confirmed Korea in its isolationism for another decade, until Japan forced it to end its isolationism in 1876 through the threat of military force (much like the United States did to Japan in 1854 - see Convention of Kanagawa).



The regent Heungseon Daewongun.

Throughout the Joseon Dynasty, Korea maintained a policy of strict isolationism from the outside world (save for tribute intercourse with the Qing dynasty and occasional trading with Japan through Tsushima). However, it did not succeed entirely in sealing itself off from foreign contact. Catholic missionaires had begun to show an interest in Korea as early as the 16th century with their arrival in China and Japan. Through Korean tribute missions to the Qing court in the 18th century, foreign ideas, including Christianity, began to enter Korea and by the late 18th century Korea had its first native Christians. However it was only in the mid 19th century that the first western Catholic missionaries began to enter Korea. This was done by stealth, either via the Korean border with Manchuria or the Yellow Sea. These French missionaries of the Paris Foreign Missions Society arrived in Korea in the 1840s to proselytize to a growing Korean flock. Bishop Siméon-François Berneux, appointed in 1856 as head of the infant Korean Catholic church, estimated in 1859 that the number of Korean faithful had reached nearly 17,000.[1]

Bishop Berneux of the Paris Foreign Missions Society was tortured and then beheaded on 7 March 1866.[2]

At first the Korean court turned a blind eye to such incursions. This attitude changed abruptly, however, with the enthronement of the fourteen year old King Gojong in 1864. By Korean tradition, the regency in the case of a minority would go to the ranking dowager queen, in this case the fiercely conservative mother of the previous crown prince, who had died before he could ascend the throne. The new king’s father, Yi Ha-ung, a wily and ambitious man in his early forties, was given the traditional title of the unreigning father of a king: Heungseon Daewongun, or “Prince of the Great Court”. Though the Heungseon Daewongun’s authority at court was not official, stemming in fact from the traditional imperative in Confucian societies for sons to obey their fathers, he quickly seized the initiative and began to control state policy. He became one of the most effective and forceful leaders of the 500-year-old Joseon Dynasty. With the aged dowager regent’s blessing, the Heungseon Daewongun set out upon a dual campaign of both strengthening central authority and Korean isolation from the disintegrating traditional order outside its borders. By the time the Heungseon Daewongun assumed de facto control of the government in 1864 there were twelve French Jesuit priests living and preaching in Korea and an estimated 23,000 native Korean converts.[3]

Pierre Henri Dorié of the Paris Foreign Missions Society, also martyred in Korea in 1866.

In January, 1866 Russian ships appeared on the east coast of Korea demanding trading and residency rights in what seemed an echo of the demands made on China by other western powers. Native Korean Christians, with connections at court, saw in this an opportunity to advance their cause and suggested an alliance between France and Korea to repel the Russian advances, suggesting further that this alliance could be negotiated through Bishop Berneux. The Heungseon Daewongun seemed open to this idea, though it is uncertain whether this was ruse to bring the head of the Korean Catholic Church out into the open. Berneux was summoned to the capital, but upon his arrival in February 1866, he was seized and executed. A roundup then began of the other French Catholic priests and native converts.

Several factors contributed to the Heungseon Daewongun‘s decision to crack down on the Catholics. Perhaps the most obvious was the lesson provided by China, which had apparently reaped nothing but hardship and humiliation from its dealing with the western powers, seen most recently in its disastrous defeat during the Second Opium War. No doubt also fresh in the Heungseon Daewongun‘s mind was the example of the Taiping Rebellion in China, which had been infused with western Christian doctrines. 1865 had seen poor harvests in Korea as well as social unrest, which may have contributed to a heightened sensitivity to the foreign creed. The crackdown may also have been related to attempts to combat factional cliques at court, where Christianity had made some inroads.

Rear Admiral Roze was commander of the French Far Eastern Squadron.

As a result of the Korean dragnet all but three of the French missionaries were captured and executed: among them were Bishop Siméon Berneux, Bishop Antoine Daveluy, Father Just de Bretenières, Father Louis Beaulieu, Father Pierre Henri Dorié, Father Pierre Aumaître, Father Luc Martin Huin, all of them members of the Paris Foreign Missions Society and canonized by Pope John Paul II on 6 May 1984. An untold number of Korean Catholics also met their end (estimations run around 10,000),[4] many being executed at a place called Jeoldu-san in Seoul on the banks of the Han River. In late June 1866 one of the three surviving French missionaries, Father Felix-Claire Ridel, managed to escape via a fishing vessel and make his way to Tianjin, China in early July 1866. Fortuitously in Tianjin at the time of Ridel‘s arrival was the commander of the French Far Eastern Squadron, Rear Admiral Pierre-Gustave Roze. Hearing of the massacre and the affront to French national honor, Roze determined to launch a punitive expedition. In this he was strongly supported by the acting French consul in Peking, Henry de Bellonet.

On the French side, there were also compelling reasons behind the decision to launch a punitive expedition. These had to do with increasing violence against Christian missionaries and converts in the Chinese interior, which after the Second Opium War in 1860 had been opened up to westerners. As Korea was a nominal vassal of China, the massacre of westerners and Christians in Korea was seen by diplomatic and military authorities in the context of anti-western behavior in China. Many believed a firm response to such acts of violence was necessary to maintain national prestige and authority. In response to the event, the French chargé d'affaires in Beijing, Henri de Bellonet, took a number of intitiatives without consulting with Quai d'Orsay. Bellonet sent a note to the Zongli Yamen, threatening to occupy Korea, and he also gave the French Naval Commander in the Far East, rear admiral Pierre-Gustave Roze instruction to launch a punitive expedition against Korea.

Preliminaries (18 September – 3 October 1866)

Admiral Roze (centre) and a quarter of his sailors, on the frigate Guerrière. Circa 1865 photograph, during a visit in Nagasaki harbour.

Though the French diplomatic and naval authorities in China were eager to launch an expedition, they were stymied by the almost utter absence of any detailed information on Korea, including any navigational charts. Prior to the actual expedition Rear Admiral Roze decided to undertake a smaller surveying expedition along the Korean coast, especially along the waterway leading to the Korean capital of Seoul. This was done in late September and early October 1866. These preliminaries resulted in some rudimentary navigational charts of the waters around Ganghwa Island and the Han River leading to Seoul. The treacherous nature of these waters, however, also convinced Roze that any movement against the fortified Korean capital with his limited numbers and large hulled vessels was impossible. Instead he opted to seize and occupy Ganghwa Island, which commanded the entrance to the Han River, in the hopes of blockading the waterway to the capital during the important harvest season and thus forcing demands and reparitions on the Korean court.

The nature these demands were to take was never fully determined. In Peking the French consul Bellonet had made outrageous (and as it turned out unofficial) demands that the Korean monarch forfeit his crown and cede sovereignty to France. Such a stance was not in keeping with the more circumspect goals of Rear Admiral Roze, who hoped only to force reparations. In any case, the demands of Bellonet were never officially endorsed by the French government of Napoleon III, and for his importunate blusterings he would later be severely reprimanded.[5]

Expedition (11 October – 12 November 1866)

The French frigate Guerrière commanded by Admiral Roze was the lead ship in the French campaign against Korea. Here the ship is photographed in Nagasaki harbour, circa 1865.

On 11 October, Admiral Roze left Qufu with the frigate Guerrière, two avisos (Kien–Chan and Déroulède), two gunboats (Brethon and Tardif) and a corvette (Primauguet), as well as almost 300 French marines from their post in Yokohama, Japan. The total number of French troops is estimated at 800.[6] On 16 October, a group of 170 French marines landed on Ganghwa island, seized the fortress which controlled the Han river, and occupied the fortified city of Ganghwa itself. On Ganghwa Island the French marines managed to seize several fortified positions, as well as booty such as flags, cannons, 8,000 muskets, 20 boxes of silver ingots, and various lacquer works, jades, and manuscripts and paintings that comprised the royal library on the island. These latter books would go on to become the core of the Korea collection in the Bibliothèque Nationale de France.

From his earlier exploratory expedition Roze knew it was impossible for him to lead a fleet of limited force up the treacherous and shallow Han River to the Korean capital, and satisfied himself instead with a “coup de main” on the coast[7]. On the mainland across the narrow channel from Ganghwa Island, however, the French offensive was met with stiff resistance from the troops of General Yi Yong-Hui, to whom Roze sent several letters asking for reparation, without success. A major blow to the French expedition came on 26 October, when French marines landed briefly on the Korean mainland in an attempt to seize a small fortification at Mt. Munsu (depicted in the illustration above). As the landing party came ashore they were met by brisk fire from the Korean defenders. Three French soldiers were killed and scores injured before a retreat was called. Except for continued surveying activity around Ganghwa and the mouth of the Han River, French forces now largely fortified themselves in and around the city of Ganghwa.

Roze then sent a new letter, asking for the release of the two remaining French missionaries whom he had reason to believe were imprisoned. No answer was forthcoming but it became clear from activity seen on the mainland across the narrow straits that Korean forces were mobilizing daily. On 9 November the French were again checked when they attempted to seize a fortified monastery on the southern coast of Ganghwa called Jeongdeung–sa. Here again stiff Korean resistance, coupled by the overwhelming numerical superiority of the Korean defenders, forced a French retreat with dozens of casualties but no deaths. Soon thereafter, with winter approaching and the Korean forces growing stronger, Roze made the strategic decision to evacuate. Before doing so, orders were given to bombard the government buildings on Ganghwa Island and to carry off the varied contents of official storehouses there. It was also learned around this time that the two missing missionaries feared captured in Korea had in fact managed to escape to China. This news contributed to the decision to leave.

Stela to the martyrs of the Paris Foreign Missions Society in Korea.

All told the French suffered three dead and approximately 35 wounded.[8] In retreating from Korea, Roze attempted to lessen the extent of his defeat by stating that with his limited means, there was little more he could have accomplished, but that his actions would have a dissuasive effect upon the Korean government:

"The expedition I just accomplished, however modest as it is, may have prepared the ground for a more serious one if deemed necessary,... The expedition deeply shocked the Korean Nation, by showing her claimed invulnerability was but an illusion. Lastly, the destruction of one of the avenues of Seoul, and the considerable losses suffered by the Korean government should render it more cautious in the future. The objective I had fixed to myself is thus fully accomplished, and the murder of our missionaries has been avenged." report of 15 November by Admiral Roze[9]

The European residents in China considered the results of the expedition minimal and demanded a larger expedition for the following spring, but this never materialized.

After this expedition Roze with most his fleet returned to Japan, where they were able to welcome the first French Military Mission to Japan (1867-1868) in the harbour of Yokohama on 13 January 1867. The French government ordered the military to leave as a result of heavy losses in the French intervention in Mexico.


In the course of these events, in August 1866, an American ship General Sherman foundered on the coast of Korea. Some of the sailors were massacred, but the United States could not obtain reparations. The United States offered to France to mount a combined operation, but the project was abandoned due to the relatively low interest for Korea at that time. An intervention happened later, in 1871, with the United States Korean expedition.

The Korean government would finally agree to open the country in 1877 only, when a large fleet of the Imperial Japanese Navy was sent under the orders of Kuroda Kiyotaka, leading to the Treaty of Ganghwa.

See also


  1. ^ Dallet, 452.
  2. ^ Source
  3. ^ Kane (1999), 2.
  4. ^ "It is estimated than 10,000 were killed within a few months" Source
  5. ^ Kane (1999), 20.
  6. ^ “Expédition de Corée:Extrait du Cahier de Jeanne Frey”. In U, Cheolgu, 19 segi yeolgang gwa hanbando [the great powers and the Korean peninsula in 19th century]. (Seoul: Beobmunsa, 1999), p. 216
  7. ^ Marc Orange, “Expédition de l‘amiral Roze en Corée.” Revue du Corée, 30 (Fall 1976), 56.
  8. ^ Numbers vary according to the source but they are nearly all unanimous in providing the number of French dead. See for instance, Ch. Martin, “Expédition de Corée en 1866.” Le Spectateur militaire (1883), p. 265.
  9. ^ "L'expédition que je viens de faire , si modeste qu'elle soit, en aura préparé une plus sérieuse si elle est jugée nécessaire,....Elle aura d'ailleurs profondément frappé l'esprit de la Nation Coréenne en lui prouvant que sa prétendue invulnérabilité n'était que chimérique. Enfin la destruction d'un des boulevards de Seoul et la perte considérable que nous avons fait éprouver au gouvernement coréen ne peuvent manquer de le rendre plus circonspect. Le but que je m'étais fixé est donc complètement rempli et le meurtre de nos missionnaires a été vengé" Source


  • Choe, Chin Young. The Rule of the Taewŏn’gun 1864-1873: Restoration in Yi Korea. Cambridge, MA: Harvard University Press, 1972.
  • Choi, Soo Bok. “The French Jesuit Mission in Korea, 1827-1866.” North Dakota Quarterly 36 (Summer 1968): 17-29.
  • Dallet, Charles. Histoire de l’Eglise de Corée. Paris: Librairie Victor Palmé, 1874. (This epic history of the history of the Catholic Church in Korea is important as well for some of the first depictions of Korea by westerners. It was pulled together by Dallet from letters of the missionaries themselves as well as an earlier draft written by one of the missionaries executed in 1866, but which had been smuggled out of the country. Unfortunately it has never been fully translated into English).
  • Kane, Daniel C. “Bellonet and Roze: Overzealous Servants of Empire and the 1866 French Attack on Korea.” Korean Studies 23 (1999): 1-23.
  • Kane, Daniel C. “Heroic Defense of the Hermit Kingdom.” Military History Quarterly ( Summer 2000): 38-47.
  • Kane, Daniel C. "A Forgotten Firsthand Account of the P'yǒngin yangyo (1866) : An Annotated Translation of the Narrative of G. Pradier." Seoul Journal of Korean Studies. 21:1 (June 2008): 51-86.
  • Kim, Youngkoo. The Five Years‘ Crisis, 1861-1871: Korean in the Maelstrom of Western Imperialism. Seoul: Circle Books, 2001.
  • Orange, Marc. “L’Expédition de l’Amiral Roze en Corée.” Revue de Corée. 30 (Autumn 1976): 44-84.
  • Wright, Mary C. "The Adaptability of Ch'ing Diplomacy: The Case of Korea." Journal of Asian Studies, May 1958, 363-81. Available through JSTOR.

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