Me and my nieghbor have been playing this section for aprox. 8 hours and can not figure out how to get through this section of the game. It's got a 'nine-minute' window of total chaos waiting for your bombers to arrive. Please help...

Concentrating on the turrets is the main one. Ignore the enemy forces unless they are posing a direct threat to your guys.

Take down the outpost turrets before the ones on the main base. Don't forget that the Marshall is there should you need repairs.

Don't forget to destroy any fighters/bombers. The main turrets are on the hills near the beachhead, theres a cluster in the middle of the island and others around the enemy bases. Once this is done the bombers can clear up!

try not to use the repair pad to much cos i hav found it lowers ur grade