@izzythepush,
They were all brought up in the bushido culture, where basically honour and duty was everything.
When the Americans actually started occupying Japan, there were numerous suicides up and down the land, because of that dishonour of surrendering.
The other side of the coin though, was that within that culture, an enemy who had surrendered as opposed to fighting to the death was considered the lowest of any animal and treated accordingly.
The Americans under MacArthur did a very good job in turning the Japanese people away from the old bushido and towards modern democracy.
That said, I think it will take the following generation, my lot, the offspring, to properly pop their clogs before the atrocities will be finally put behind us. Maybe thirty years from now there will be nobody left who has a direct memory of someone who actually suffered under them.