Battle 3 North America

Let me look in to it.. Will be back

As always there are lots of ways to get this fixed. However, if you dont defend your base will be finished after 4-5 turns (as you can see in last pica).
So to survive you have to 1. Build anti air defence (maybe even capture middle island airbase.. But not necassary) 2. Kill the 4 ships in the east see pica 1
In the mean time you want to capture the island in the west (pica 2).

My tac was based on the strong tank and artey unit you have from the start for the attack. For the defence i used my fleet and airtroops and since you get enough green resources you can build: at least 1 anti-air, 1 radar. I did not buy land unit before getting the green ones at the mine on the west island but spend all on submarines (very good against naval units) and bombers for my air support.

When this face is succeeded i got the middle island when i went for 1 star win. Got my navy to the naval bae in the middle and there after to the south. My land units went from west island to south west island.

Tips: i used a lot of air and a lot of submarines. Moreover quickly destroy units that can fire from big range with strong power.

Hopefully this helps