I think the main problem with the book is that the reporter left the unit just after they had reached Bagdad and “won the war” with minimal casualties (I think one guy got hit by a ricochet and was out of action for two days).
Therefore the whole theme of the book is a bit “havent we done a good thing here and isn’t war great – just like an Xbox game with your mates.”
In the final chapter the reporter did meet a couple of guys from the unit who had sufferered horrendous injuries at Fallujah. But he wasn’t there, so his description of a guy having his arms blown off by an RPG still seems a bit gung ho.
So the book’s not inaccurate, just very one sided.
I imagine A TV series, with the benefit of hindsight from later events, would be much better.