Quote Originally Posted by alatar
He means that it is very hard (bordering on the impossible) to be sure where any battle was fought (especially in antiquity) and also points out that even if you do have the location, it will have changed dramatically since the time, restricting it's ability to give insight into the battle.
And add to that, we don't actually know how the battles were even fought. Sure we have accounts that purport to tell us of the movements of some units and some of the major events, but the authors assumed the reader knew how things went in ancient warfare.

My point is this entire exercise seems a little wishful in it's usefulness given the number of things we really don't know.