Jungle Wars: Top level bombers versus max walls

Here's a picture that can save me a lot of words. It took 20 level 6 bombers to get through these Level 10 and 11 walls. They did not make it to the final ring. My "technique" was to release them all at once.

My bombers were being shot at the whole way but they went in with gorillas and dinos which absorbed most of the fire.

Once this player upgrades the outer wall the defense may hold up for two inner rings...