Xprimentyl said:
The books are pretty character-focused as well, each chapter written from a specific character's point of view. It's rare to get a macro-level view of a battle.
...That said, GRRM has put a great deal of thought into how those battles and sieges work: the details for troop numbers, types of units, the defensive benefits conveyed by different kinds of castles and forts (as well as geography), the applications of siege engines. There's a reason people pore over the military minutiae in the books. Played a Westeros risk-style board game a little while ago, the scenario took just over 5 hours, and that's what convinced me there's untapped potential there for strategy play.