survivors who were raiding their camp for supplies. These patrols sometimes encountered Japanese soldiers or civilians, and when they were captured, they were interrogated and sent to an appropriate prison camp. It was during these interrogations that the Marines learned of Ōba's name. At the peak of the hunt for Ōba, the Marine commander devised a plan in which his men would line up across the width of the island, about two meters separating one Marine from the next, and they were to march from the south end of the island to the north. The commander felt that Ōba and his men would have to fight, surrender, or be driven north and eventually captured. Due to this dragnet, the elderly and infirm civilians volunteered to surrender. Although some of the soldiers wanted to fight, Captain Ōba asserted that their primary concerns were to protect the civilians and to stay alive to continue the war. As the line of Marines approached the area, most of the remaining soldiers and civilians climbed up to a concealed mountain clearing, while others stood on narrow ledges and clung to the side of the mountain. They maintained their precarious positions for most of the day, as the Marines crossed through the area, ransacking huts and gardens when they found them. In some places, the Japanese on the ledges were less than above the heads of the Marines. The Marines' search proved futile, and eventually led to the chagrined commander's reassignment. Surrender Captain Ōba and his men held out on the island for 512 days, or about 16 months. On 27 November 1945, former Major General Umahachi Amō, commander of the 9th Independent Mixed Brigade during the Battle of Saipan, was able to draw out some of the Japanese in hiding by singing the anthem of the Japanese infantry branch. Amō was then able to present documents from the defunct Imperial General Headquarters to Captain Ōba ordering him and his 46 remaining men to surrender themselves to the Americans. On 1 December 1945, three months after the official surrender of Japan, the Japanese soldiers gathered once more on Mt. Tapochau and sang a song of departure to the spirits of the war dead. Ōba then led his people out of the jungle and they presented themselves to the Marines of the 18th Anti-Aircraft Artillery Company. With great formality and commensurate dignity, Captain Ōba surrendered his sword