BIA EIB Is very historical, and feels like you are realy there leading your men into battle
The realism feels great, your weapon shoots like it would in real life, it doesn't always go were you think it should ( into the enemies skull ). Also just as real as that, is the sound quality, the guns, grenades, bombs, and vehicles sound superbly good, especially crashing planes and rolling tanks. Back ground noise such as distant bombs, machine guns planes ect. is pretty good as well which makes you feel like you really are surrounded behind enemy lines. And last is the emotion of the characters, you kind of feel a bind with them and a social connection, when most other games you don't feel or get to see that. In most FPS's you just start a new mission and blow stuff up as normal. In this game you get to see small social interactions between missions.
Its only necessary in war for the men to use tactics to survive, and this game really represents that. You don't use your men for the win… you die. Your men die…. You die. In most other war games you don't use tactics to survive, Or help you win the mission, the friendly troops are just kind of there to make it seem like it.
If you just want a war game were you can run up to people at shoot them away in a unrealistic type of FPS, I don't recommend buying this game.