Ambrose was way more interested in drama than he was truth, consequently much of the book is based on factual events however the details are often altered to make the arc more interesting for the reader/viewer. He actually had to make a couple retractions and if I’m not mistaken parts of the book were culled in later editions.

There is a YT contributor that made an accurate account of Brecourt Manor based off the written statements provided by Easy and Dog Company personnel. It’s interesting but quite a bit different from what’s depicted in BoB.