Right off the bat, I’m an Adrian Goldworthy fan. His style is informative without being professorial or written for an ignorant audience. This book covers the events leading up to one of the largest battles, in the smallest area, in history. The campaign is still taught at military academies, and while it was decisive operationally, it wasn’t decisive in the strategic sense.
There are a reasonable number of maps, four, a lot of background, plenty of information, including alternative ideas as to the location and progress of the battle, and it’s after effects. Honestly, it reads like an in depth but lacking in color version of an Osprey Campaign book. I still highly recommend it, but I can’t see how, with hindsight, any wargame, other than a solitaire game, could be done on the battle. The average wargamer, as the Romans, isn’t going to allow themselves to be funneled into a choke point where their advantage in heavy infantry isn’t going to come into play.