Seeing you like wargames I cant recommend enough for you to get the Close Combat games. Very good games, best of it's genre hands-down.
Some like the older ones, CC1-3, but the thing I dont like in them is the linear campaign. In CC4 & CC5 you get an strategic map to move your soldiers between the sectors.
As I said, HIGHLY recommended and will keep you busy for a long time and then abit more with mods.
Combat Mission series is pretty good too, kinda like CC but turn based and maybe abit more technical when it comes to tanks etc.