Aside from the manual's solid technical grasp, what is interesting is how relatively good-natured it seems, given the savagery, some might even say depravity, of the Pacific Theater. My grandfather on the rice-powered side of the family was "interviewed" by the kempeitai in occupied Kuala Lumpur during the Japanese Time. He was not seen again; although it is said that his head made an appearance on a spike atop the local cinema.
The IJA seemed to enjoy considerable latitude in their conduct during the period, much of which could not be construed as benign.