I have that one. It's quite interesting, but the army lists are very dull - it's just bloke with crossbow, bloke with halberd, bloke on chariot. The best part of it are the strategists and their ruses.
Now see, that's what I like about it. None of this ward save, regeneration, slime trail, miasma of pestilence impossible to kill stuff.
I don't know anything about that book, but most of the classical (west) & medieval stuff seems a little more interesting than that, with warbands, nomad cavalry, phalanxes, etc.
I struggle to find opponents/money to buy models/time to paint them for fantasy, let alone ancient battles.
I hear that -- and I don't know many local players either. But that's why I'm on a crusade to convert people.
That's true, no one plays. It's even harder to find someone to play an actual in-period game.
I haven't even played, but mainly because you need so many miniatures for an army and I still haven't finished painting my Byzantines.
My Burgundians have far fewer figures than my Empire or Skaven do.
Back to the original topic, I like to have a bit of mystery & unknown in the game, so I'm glad they just hint at some things without filling them out.
Besides, you can always "counts as." Like the Cathay & Nippon armies using existing rules (both Empire?)