okay lets get right to the chase.

1.put rifle men behind the middle sanbag.
2.a sniper should be behind the front sanbag in the bootom and top.
3.put a mortor team thru the top.
4.put a machine gunner thru the bottom.
5.watch for snipers,and if they are picking of your rifle men in the middle,simply edvance on of your side snipers.
Hope this helps!