Ok so I ended up capturing both the oil and rubber zone I have trained some small transport plains so I can go further and attack I've made a couple allies I helped 3 people in global in my battlefield I have a lvl 8 city I am trying to get to 11 so I have fighters and bombers wich are the main troops along with transports stugs and artillery they are what the game turns into in the about middle is when it changes over to there after that not many people use tanks oh and aa guns are important too now harbors they are ok but before you cap one you want to see the water around it I mean is it like a pond or river or big lake because harbor importance depends on the acces of water the more water the more places you can attack