[quote name='mxpowar']The only thing putting me off from getting this is that I read in a review somewhere that this is a sequel and that it references the previous games a lot. Tracking down the previous games seems like too much of a bother, though.
How does this game compare to WWII Call of Duty games (2,3,WaW)?[/quote]
The continuity is pretty strong. This third game deals very prominently with the psychology of the protagonist, whereas the first two games were more straightforward campaigns; newcomers to the series will probably be left wondering what the hell is going on, not understanding what brought the character to this point. That said, I really don't think it's that tough to find the first two games.
BIA is much more of a squad shooter than COD's run-and-gun style where fellow soldiers are mostly cannon fodder. You'll spend much of your time in BIA figuring out how to suppress the enemy and the best way to flank them. It's slower paced but it feels like a more realistic representation of WWII tactics.