Frankly, I'll read the manual first, lol. --It's as much fun for me to form approaches to strategy PRIOR to gameplay and then take those plans INTO game for enactment. . .
I read ALL the stuff for HTTR, every bit for POA2, "Maneuver Warfare Handbook" by Lind and "The Art of Maneuver: Maneuver-Warfare Theory and Airland Battle" by Leonhard and more BEFORE I even loaded up scenario-one for my latest historical wargame.
History IS important because it provides a framework for game

design, but reliable TacAI that replicates actual tactics is MORE important for game-immersion and a "sense" of leadership in any wargame. There's little worse in our niche hobby than having code that follows its own rules and doesn't acknowledge realistic tactical approaches to historical events and practice.
Imagine the fun of knowing the actual historical events; then, interdicting those known events with your own planning and tactics while having the TacAI respond appropriately and realistically. HTTR is the ONLY game that will respond credibly and with VARYING methods to prevent your success while attaining its own goals.
It's a SIMPLE thing, really. The concept is, anyway. But, HTTR and (hopefully) COTA will continue to be a source of gaming enjoyment while offering a credible challenge based upon historical accuracy and realism.
Frankly, if Panther Games could get financing for a modern warfare update, their code is clean enough that their work would likely be drafted for training at the highest military levels. At present, with their documentation, HTTR and presumably COTA SHOULD be included with textbooks on military science and/or WWII histories.