You can download the map pack for Battleplan on the Play page.
4 players maps
A large cooperative map with a shared base area, open spaces in the middle and objectives on the sides.
The almost straight line from base to base keep the early action viable and concentrate most of the oil, while the other oil spread on the sides will provide an advantage when hold long enough.
This map concentrates most of the action on the diagonal between the bases with a few choke points and includes secondary objectives in wide area on the sides that are risky to take.