United States expedition to Korea

Korean Expedition
The captured Sujagi aboard USS Colorado in June 1871
Date 1 June – 3 July 1871 (1 month and 2 days) Location Ganghwa Island 37°42′00″N 126°26′00″E / 37.7000°N 126.4333°E / 37.7000; 126.4333 Result Inconclusive
Belligerents
United States	Joseon
Commanders and leaders
John Rodgers Winfield Schley Hugh McKee †	Eo Jae-yeon † Eo Jae-sun †
Strength
650 men 1 frigate 2 sloops-of-war 2 gunboats	800 men 40 artillery pieces 6 forts 4 shore batteries
Casualties and losses
3 killed 10 wounded 1 gunboat damaged	243 killed (American estimate)[1] ~350 killed (Korean estimate, likely including suicide)[1] 20 captured (later released) 40 artillery pieces captured 5 forts destroyed 1 fort damaged 4 shore batteries destroyed

The United States expedition to Korea, known in Korea as the Shinmiyangyo (Korean: 신미양요; Hanja: 辛未洋擾; lit. Western Disturbance in the Shinmi Year) or simply the Korean Expedition, was an American military action in Korea that took place predominantly on and around Ganghwa Island in 1871.