Yes it is a ww2 based game. Let me break it down to you. It is popular and usually theres atleast 5 or 6 servers with 32/32 members and theres atleast 25 maps for the game. 15 large maps came with the game and some others like 5 or 6 were created by the devs but were not released as offical maps but can still be played. The maps arn't linear like call of duty 2. And driving a tank can't be done alone like the battlefield series. Games like CS and COD2 make you feel like your in a war movie RO will make you feel like your in an actual war with your platoon.
It is a realistic game you have no cross hair you don't even know how many bullets are left you just judge how heavy ( or light) your ammo magazine is to see guesstime how many bullets you have. The game punishes you for running and gunning but your rewarded for patience and skill. Theres classes you get to choose from no not just different guns but classes. There's machine gunner 2-3 , assualt trooper 3-4 , rifleman , one sniper per team , semi auto rifleman ,tank crew man , tank commander 1-2 , squad leader 1 , and maybe some other i'm forgetting. The maps are large some maps will take you a good 15 minutes of walking through scenery I find this more realistic and makes the game more exciting. It is had a trial which got even more members to join that's what got me hooked. I'll see you on RO soldier.