BF:BC2 comes with WW2 mission!
Surprisingly to me, BF:BC2 seems to contain a mission, that is located in a World War II environment.
That is, what the ESRB (Entertainment Software Rating Board) states in their rating-comment for Bad Company 2.
“In single-player mode, players conduct missions on an unnamed Japanese island during World War II and then move into the modern day through jungles, deserts, and snowy terrain.”
Read the full rating here: