From a gameplay perspective, the demo gives me the impression that it's mostly about avoiding unrecoverable mistakes while attrition takes its course. I guess that's what real war is like, but for a game I'd rather win by finding enough good moves and the occasional very good one, not by "diligently avoided making any mistakes" (on the other hand that sentence would look worse in a job performance review, heh). Sorry to be that person on the internet who complains that the game is too realistic!