The remainder of the 19th century would be a period of declining strength and introspection about the mission of the Marine Corps. The Navy's transition from sail to steam put into question the need for Marines on naval ships; indeed, the replacement of masts and rigging with smokestacks literally left Marine marksmen without a place. However, the Marines would serve as a convenient resource for interventions and landings to protect U.S. lives and property in foreign countries, such as the expedition to Formosa in 1867. In June 1871, 651 Marine deployed for the expedition to Korea and made a landing at Ganghwa Island in which six Marines earned the Medal of Honor and one was killed (landings were also taken by the French in 1866 and Japanese in 1875), 79 years before the famed landing at nearby Inchon. After the Virginius Affair caused a war scare with Spain, Marines took part in naval brigade landing exercises in Key West in 1874, Gardiners Island in August 1884, and Newport, Rhode Island in November 1887. Three Marines earned Medals of Honor in the Samoan Civil War. Altogether, the Marines were involved in over 28 separate interventions in the 35 years from the end of the Civil War to the end of the 19th century, including China, Formosa, Japan, Nicaragua, Uruguay, Mexico, Korea, Panama, Egypt, Haiti, Samoa, Argentina, Chile, and Colombia, including the overthrow of the Kingdom of Hawaii, which would be annexed five years later. They would also be called upon to stem political and labor unrest within the United States, such as guarding mail. In 1885, war correspondent Richard Harding Davis popularized the phrase "The Marines have landed and have the situation well in hand" when describing Americans intervention in a Panamanian revolt.