Executed Japanese Airmen POWs

[kaki3152]

I'm reading through "Prisoners of the Japanese" by Gavan Daws [Morrow and Co.-1994]. He has an entire page on executed airmen. Some of these I can identify and others remain unknown. Possibly someone can help identify some of these airmen;
(1)"At Bicycle Camp in Batavia, four flyers were kept for months...until one day they were taken away and shot standing in their graves" Presumably RAAF?
(2) At Outram Road Jail [Singapore] Japanese airmen did the head-chopping [of downed bomber crews]. Raises the question of which bombers were shot down over Singapore, apart from B-29s and at least one PB4Y-2.
(3) In China, at Hankow, three men were tortured then burned alive
(4) At Beo, on Talua Island, four men were bayoneted at a ceremonial parade.
(5) Near Buin, a man had boiling water poured over him.

There are more but i will stop there. The book is reminiscent of "Knights Of Bushido", which I don't have any more. I have a MACR of a B-24 that was shot down over Indo China and the crew was beheaded. Grisly stuff