Describes the U.S. government's wartime (1942–1945) planning of the occupation of Japan. American planners clashed over the role of Japan's emperor in a postwar democratic nation. Joseph Grew and Henry Stimson favored his retention, but failed to get their view in the Potsdam Declaration, which defined the conditions for Japan's surrender. Washington's directive to the Supreme Commander of the Allied Powers (SCAP), General Douglas MacArthur, was ambiguous on constitutional reform and treatment of the emperor. This gave MacArthur an opportunity to interpret U.S. policy and place his indelible imprint on Japan's postwar political structure. Keywords:constitutional reform,
Joseph Grew,
Japan's surrender,
postwar planning,
Potsdam Declaration,
role of the emperor,
State-War-Navy Coordinating Committee (SWNCC),
Henry Stimson