Glad you enjoyed the book, I study history everyday but what is disturbing is the writers always have predisposed ideas and always cloud the facts so one history book is far from accurate. The general time lines and era's for the most part will be accurate, ie,. like the major battles and revolutions, but the more detailed battles and horrors, atrocities, selfishness, lack of empathy and barbaric behaviour are always watered down.
Now you mentioned you read something about the Japs, something you didn't like, now ask yourself this question.
What if you seen a group of people that took 10 000 woman and children and set them on fire, then the same group of people smashed 10 000 woman and children with concrete breaking 50 bones, watching them die a slow and painful death, then another 10 000 woman and children and soffocated them, then another 10 000 buried alive, then another 10 000 woman and children, but this time they never killed this group, they just cut off their arms legs, poked out their eyes, made them death and filled them with deseases?.... what would you think of a nation that did all this to another nation?
Well the US did all the above and x 100 to Japan when they dropped 2 nukes on the innocent people, now the scary part is the world is a lot safer with the US running the show then at least 80% of all the other nations.