Hey not sure if this has been addressed or not.
If you use behind enemy lines, can you move the 3 spaces (into barb wire), then instead of battleling remove barb wire and then move 3 more spaces?
Yes. BEL doesn't change anything about the combat aspect of your turn.
But I think this is a very powerful card, possibly one of the best in the game and I would question "wasting" this on wire removal.