It looks like you're new here. If you want to get involved, click one of these buttons!
As the title says
http://www.battlegroundeurope.com/
WWIIOL covers a huge terrain area of Europe with some 600 meaningful towns and a single game world played 24x7. A campaign generally takes from a week or two to 6 months (capture 90% of the towns or so to win) with almost 200 different weapon systems. Almost nothing is scripted, the players pretty much dictate what happens (there are even High Command Staffs of players than make strategic decisions). Very little AI (just MG and AT guns to protect towns that are empty). Really decent flight and ground physics along with a ballistic model for ammo (not hit points). Everything is unpredictable and thus fun. Battles can go from all quiet to complete all out war in just a few minutes; some battles can last real world days with no let up leaving you completely worn out. Nothing else like it.
Trailer I made: http://www.youtube.com/watch?v=OuVX2BnsPeY
Another video I made recently: http://www.youtube.com/watch?v=Wfx8HAfcRMI