Traveling to Hawaii, I visited the Arizona Battleship Memorial with solemnity. On December 7, 1941, the Japanese Imperial Navy attacked Pearl Harbor, the base of the U.S. Navy's Pacific Fleet, while the U.S. Army was on no alert. In more than two hours of air strikes, Japanese bombers killed and injured 3,581 American citizens, sank six U.S. warships and destroyed 347 U.S. aircraft. The Arizona battleship, moored at Pearl Harbor at that time, was hit and sunk, the ammunition depot exploded, and 1177 soldiers were killed. Pearl Harbor incident directly led to the outbreak of the Pacific War, which made the United States officially join the Second World War. In May 1962, President Kennedy designated the sinking site of the battleship Arizona as a national cemetery and established the Arizona Memorial in the waters of the sinking site of the Arizona. The memorial was completed in 1980. The historical warships moored in Pearl Harbor, Hawaii, present the history of World War II to the people. The Arizona's hull is still 12 metres underwater. Its superstructure and artillery are dismantled. The wreckage is visible on the water. Only the circular base of the main turret behind the hull is visible. On the white marble wall of the memorial hall, the names of 1177 naval officers killed on the warship on December 7, 1941 are inscribed. Every morning, naval soldiers still hoist the Star-Spangled Flag for the battleship Arizona, which is no longer navigable. The memorial was built on a submarine filler and arched over the underwater hull of the Arizona battleship. It seems to be a monument built on the sea, so that today's people will never forget that war, never forget those who fought for peace.