on the island and engaged Korean troops. Armed with modern rifles, they made quick work of the Koreans who carried matchlock muskets; consequently, thirty-five Korean soldiers were killed. News of the incident did not reach Tokyo until September 28, but the following day the Dajōkan decided to dispatch gun boats to Pusan to protect Japanese residents there. It also began deliberating whether or not to send a mission to Korea to settle the incident. Aftermath The number of casualties of the incident was recorded at 35 in the Joseon Dynasty with two Japanese soldiers wounded. In addition, 16 Korean naval personnel were captured by Japan. Many weapons were also looted. After the incident, the Imperial Japanese Navy blockaded the immediate area and requested an official apology from the Joseon government, which was concluded with the dispatch of the Kuroda mission and the signing of the Treaty of Ganghwa on February 27, 1876, which opened the Korean Peninsula to Japanese and foreign trade. See also Meiji period References Sources Battles involving Japan Anti-Japanese sentiment in Korea Anti-Korean sentiment in Japan Battles involving Joseon Naval battles involving Japan Naval battles involving Korea 1875 in Korea Yellow Sea Ganghwa Punitive expeditions of Japan Conflicts in 1875 September 1875 events