Busan: The identities of four British soldiers, who were anonymously buried at the U.N. Memorial Cemetery in Busan, have been confirmed, and Britain's defense ministry held a dedication ceremony for the tombstones inscribed with their names Tuesday. The four previously unknown soldiers killed during the 1950-53 Korean War are Corporal William Adair, rifleman Mark Foster, Major Patrick Arthur Angier, and Sergeant Donald Northey. According to Yonhap News Agency, the tombstone dedication ceremony took place at the U.N. Memorial Cemetery in the southeastern city of Busan. Adair and Foster lost their lives in January 1951 while performing an operation to cover Seoul citizens retreating south from enemy forces. Angier and Northey, both of the Gloucestershire Regiment, were killed by enemy forces during the Battle of the Imjin River in 1951. Their identities were confirmed by war researcher Nicola Nash, who reportedly used hundreds of documents, including maps, telegrams, reports, and letters, to identify the sold iers without any DNA evidence. Britain had sent 81,084 combat troops during the Korean War, the second-largest number after the United States, and 1,106 of them lost their lives on Korean soil. Despite the recent identifications, the identities of 72 British soldiers buried at the Busan cemetery remain unknown. The ceremony was attended by the families and friends of the fallen soldiers, British Ambassador to South Korea Colin Crooks, and defense officials from both countries.