In June 2005, the Emperor visited the island of Saipan (part of the Northern Mariana Islands, a U.S. territory),[25] the site of a battle in World War II from 15 June to 9 July 1944 (known as the Battle of Saipan). Accompanied by Empress Michiko, he offered prayers and flowers at several memorials, honoring not only the Japanese who died, but also American soldiers, Korean labourers, and local islanders. It was the first trip by a Japanese monarch to a World War II battlefield abroad.