"I was amazed to read of "Operation Unthinkable"."
Well my dear old Dad was given a couple of jeeps loaded with armed Japanese officers and NCO's and was sent out to roam the streets of Jakarta in late '45 keeping Soekarno's nationalists in their place until the Dutch arrived to reinstall Western Civilisation - absolutely sickened him.
And similar happened in Saigon IIRC..............
This also occurred in Singapore and on the Malay peninsular, because of the abrupt end of the Pacific War. Without checking, Japanese forces were authorised by Mountbatten to retain side arms and maintain public order for about a month, until sufficient British and Imperial troops landed to take over.