After more than two years of fighting in the Pacific, he fulfilled a promise to return to the Philippines. He officially accepted Japan's surrender on 2 September 1945, aboard the USS Missouri anchored in Tokyo Bay, and oversaw the occupation of Japan from 1945 to 1951. As the effective ruler of Japan, he oversaw sweeping economic, political and social changes. He led the United Nations Command in the Korean War until he was removed from command by President Harry S. Truman on 11 April 1951. He later became Chairman of the Board of Remington Rand.