Full Spectrum Warrior is just what you're looking for...hard to describe the gameplay, play for yourself and you'll find out
there's also
Brothers in Arms...it's FPS though. But you issue commands to your fellow soldiers
World in Conflict is also a very great game for strategy and not only requires skillful management of your limited number of troops but also teamwork from your team members.
then there's also
Overlord where you command an army of goblins and watch them grow in number and ravage villages, kill innocents etc...all in all it's a game for some "evil" fun
If you want a really long drawn out tactical strategy game where one game could last a week. Try
Supreme Commander the successor to "Total Annihilation." And an even bigger strategy game called
Sins of a Solar EmpireGrimGrimoire also fits your request perfectly and has a good story (though I felt it resembled Harry Potter a little bit) but it's not online and is in the PS2
Other than these, I second "Company of Heroes"
Last edited by blakraven66 at 10:45 am, Apr 26 2008