On a 2 1/2 inch (6.35 cm) square olive drab background, a purple waving flag with letter GHQ in monogram form in yellow, flag fringed in yellow and flagstaff in yellow.
The shoulder sleeve insignia was approved for wear by the General Headquarters of the Southwest Pacific Area; United States Army Forces, Pacific; Supreme Command of the Allied Powers on 6 October 1945. It was amended to change the blue waving flag to purple on 29 July 1946. The insignia was cancelled/rescinded on 28 April 1952, when Japan was liberated.