I would suggest looking into proper wargames if you are interested in applying realworld military strategy or tactics: Gary Grigsby series, Combat Mission serie

I would suggest looking into proper wargames if you are interested in applying realworld military strategy or tactics: Gary Grigsby series, Combat Mission series, The Operational Art of War, Graviteam Tactics, and Campaign Series are all pretty solid simulation-oriented computer wargames. Total War is kinda ok too but in general most rts are going to be won by player APM and doing optimal builds (which work due to arbitrary game mechanics) and real world strategy wont really work out due to simplified mechanics and pace. For instance, most 'strategy' games don't model morale or spotting at all. To say nothing of operational concerns like equipment availability or condition.