Battlefield doesn't really have anyone who plays full time both ways. A few of their skill players (RB/WR/DB) do play some on each side of the ball. One advantage of having 200 boys out for football is they do have some depth.
I have seen Battlefield play several times. Very strong defense both against the pass and the run -- most of the limited points they have given up have been against their 2nd team defense at the end of blowouts. They might be a little undersized up front (not sure any D starter is much over...