Then you sir need to buy a copy of Battlefield1942 and prepare yourself for an incredible multiplayer online experience.
I have played it before. It is cool. I used to be a big fan of the old Atomic Games stuff like Close Combat. Codename Panzers is the closest I have found to it. I can sit for hours playing the stupid thing. MOH Pacific Assault looks to be quite cool also. Need to check it out.
If you haven't played the Combat Mission series, they are some of the best games out there. They are a modern version of the old board war games. Combat Mission takes over where Advanced Squad Leader left off. Very good for the armchair general type.