1a. you get a bank
2a. get one more bank
3a. upgrade one bank
4a. at 100$ destroy a
5a. get a op
6a. get 2 more ops
7a.at 100
8a. at 100-80$ destroy your last bank
9a. buy one more op
and there you go a good strategy for some ranks... but
1b.you need a person to defend when doing it
2b. you need the right government [moncherchy]
3b.you need to do nothing else [ or it will fail]
now you have a defending helper and, know what to do but you need to know what to do with the op on [cold war mode].
1c. get the mix of uints [5 at least]
2c. some far snipers [10 at least]
3c.defend till the the wave of bad guys is over becuse that means they are low on stuff such as money, guys, and more and if they make more guys they would die in a click. plus there base would die in the first place super fast[but wait till a big wave of bad guys or they most likely have more]
if they put the mode on normal. so you can use missles here is help
d1. if they have missles make anti missle guys from the ops
d2. on normal make a generator and upgreade it for more missles
d3. keep one bank for some missles on normal mode
d4. make sure you look at the bad guys base some times or you will make a mistake or worse!
d5.keep your guys away from each other at all times on normal mode or they will all die at once
well thats my opinion now post yours i hope i helped you