During the American expedition to Korea, on June 11th 1871, Korean soldiers were killed in the town of Gwangseong on the island of Ganghwa. After the battle of Gwangseong, the bodies of over 350 Korean soldiers were scattered around the area.

　　During the American expedition to Korea, on June 11th 1871, Korean soldiers were killed in the town of Gwangseong on Ganghwa Island. After the battle of Gwangseong, the bodies of over 350 Korean soldiers were scattered around the area. American soldiers looked down on the bodies. On June 10th 1871, the American army attacked the towns of Chosa and Deokjin on Ganghwa Island. After a fierce bombardment, the US Asiatic Fleet landed marines on Ganghwa Island. They took control of Chosa-jin and Deokjin on June 10th, and Gwangseong-jin on June 11th. In this battle, the Joseon army suffered over 350 casualties, and the US army suffered 3 casualties.

　　The U.S. Army and Navy were stationed in Korea in 1866 after the General Sherman, a merchant ship, was attacked and all 21 crew members were killed during a visit to Korea. In order to assess the incident and support the U.S. diplomatic mission to negotiate trade and politics with the Korean Peninsula, the U.S. Army sent an expedition to Korea in 1871. The U.S. Army regarded the Korean nation as a weak country and demonstrated its military power. The American military commanders had the right to bring heavily armed warships into the waters of the Korean peninsula, and they ignored the sovereignty of the Korean nation. In the Korean nation, the Sinmi Western Disturbance broke out in the year of Sinmi in 1871, and the American military expeditioned to Korea. The first American military action against the Korean peninsula was mainly carried out in Ganghwa Island and its surrounding areas in 1871.

　　On June 1st 1871, two American warships were attacked on the Han River, where the coastal batteries of the Joseon Kingdom were located. The Koreans attacked the fortifications where they had been ambushed. The governor of Ganghwa Island offered to ease the situation, but the Americans refused. The American commander, Admiral Roeliff Brinkerhoff, refused to accept an apology from the Joseon Kingdom, and punitive operations were launched. The isolationist stance of the Chosun Dynasty government and the imperialist stance of the Americans turned a diplomatic expedition into a military clash. On June 10th, around 650 Americans landed on Ganghwa Island, occupied several forts, and killed 350 Chosun Dynasty soldiers, with only three American soldiers killed. Chosun Dynasty refused to negotiate with the Americans until 1882.