Supreme Commander of the Allied Powers

The Supreme Commander for the Allied Powers (SCAP) (originally briefly styled Supreme Commander of the Allied Powers) was the title held by General Douglas MacArthur during the Allied occupation of Japan following World War II.

In Japan, the position was generally referred to as GHQ (General Headquarters), as SCAP also referred to the offices of the occupation, including a staff of several hundred U.S. civil servants as well as military personnel. Some of these personnel effectively wrote a first draft of the Japanese Constitution, which the National Diet then ratified after a few amendments. Australian, British, Indian, and New Zealand forces under SCAP were organized into a sub-command known as British Commonwealth Occupation Force.

These actions led MacArthur to be viewed as the new Imperial force in Japan by many Japanese political and civilian figures, even being considered to be the rebirth of the Shogun style government which Japan was ruled under until the start of the Meiji Restoration. Biographer William Manchester argues that without MacArthur's leadership, Japan would not have been able to make the move from an imperial, totalitarian state, to a democracy. At his appointment, MacArthur announced that he sought to "restore security, dignity and self-respect" to the Japanese people.

Douglas MacArthur and his SCAP staff played a primary role in exonerating Emperor Shōwa (Hirohito) and all members of the imperial family implicated in the war such as Prince Chichibu, Prince Tsuneyoshi Takeda, Prince Asaka, Prince Higashikuni and Prince Hiroyasu Fushimi from criminal prosecutions before the Tokyo tribunal.

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