Discussion of Japanese soldiers and sailors captured during the Second World War. The author was a Austrian Jew whose family moved in 1940 to the US, and he entered the army's Japanese language program at the end of the war, but apparently the war ended before he could carry out any duties in this regard.
The author continued to have an interest in Japan, and to some extent his interest is taken up with both explaining the way the Japanese code of ethics, which held that soldiers should die rather than be captured and so provided no instruction about what to do in this unacceptable eventuality, affected how those who did get captured would behave, and how the Japanese POW's dealt with their situation both during captivity and after return. Fundamentally, the author rejects this sort of ethics and is pejorative about those who adhered to it. This point of view gets tiresome at times, since he adopts the tone of "they're all wrong, let's see how the Japanese can overcome this wrongheadedness". No doubt that ethos has unpleasant consequences (like the abusive treatment of Allied POW's at the hands of their Japanese captors), but this judgmental attitude doesn't do much to help understand them on their terms.
There are lots of anecdotes about how the Japanese behaved in captivity, and that's basically the focus of the book. That means that there's no particular discussion of US policy about dealing with them. (And since the book focuses on the Japanese, it covers all the Western powers that held Japanese POW's, but the emphasis is on the US.) The book is particularly interested in arguing that the ethos of non-surrender was counter-productive from a Japanese point of view, since the Japanese prisoners, who'd been routinely treated brutally by the Japanese military, were left adrift when in captivity and were frequently won over by the generally humane treatment at the hands of their captors. (Not to say that all potential Japanese prisoners were treated well; particularly in the early stages of the war, few prisoners were taken, but as the war turned against the Japanese and the Allied intelligence agencies convinced their commanders of the utility of taking prisoners, more Japanese were taken prisoner, and however taken, Japanese prisoners were treated well both in absolute terms and definitely in comparison with the horrific treatment of Allied prisoners.) I would have preferred to hear a lot more about what exactly was learned from the Japanese prisoners.
Being a vague aficionado of the IJN, I was intrigued to see references to rescued sailors from the carrier Hiryu, the heavy cruiser Furutaka and the destroyer Akitsuki, but I learned nothing about what if anything was learned from them. Basically, the book is mostly concerned with the ethical problems faced by the prisoners and not about how the Allies (and US in particular) dealt with them per se (though policy does come into it in passing; and there's a whole chapter on the operation of the US Army and Navy's respective language programs, which was interesting).