The treaty that formally ended World War II in the Pacific Theater is known as the Treaty of Tokyo Bay, more commonly referred to as the Japanese Instrument of Surrender. Signed on September 2, 1945, on the USS Missouri, the document marked Japan's official surrender to the Allied powers, signaling the end of hostilities in the Pacific. This treaty concluded years of conflict characterized by significant battles and immense loss of life, leading to the establishment of peace and the eventual occupation and reconstruction of Japan.