Best way to conquer a c3

Hello,

What is the best tactic to conquer a c3-country to make profit?

Now i do:
Have an airforce attack of Fighterplanes - Attack heli - Attack drones. With these I fully destroy whole air defence of the C3.
Then I pick cities, factories and forts which I attack with my airforce attack and then I destroy it with my heavy arg/tanks.

Is this a good tactic, or are there better tactics?

Well you can use my tactics if this helps.

To raid a C3 country at war level 3 I only use 3 types of weapons which are...
1000 Offensive anti aircraft missile batteries, 1000 mid range missile batteries and 1000 heavy tanks. All at quality 250.
Also with 15000 anti aircraft missiles, 30000 mid range missiles and 2500000 tank Ammunition. All at quality 120.
The first thing you do when attacking is by first..... taking out all the helicopter wings using your offensive anti aircraft missile batteries, but not the interceptor wings as they can not attack ground units and will save you ammo from taking them out.
Then second use your mid range missile batteries which will take out all the defensive weapons that are stationed at cities and forts etc... then thirdly use your heavy tanks to finish off and destroy the cities and forts etc... and keep on repeating this process until the country surrenders.

Although if you're at a lower war level you won't need this much in terms of weapons and ammunition.

What are the losses of weapons? At level 4 I lose around the 2,5T-3T on drones & ammo, what with your tactics?

Do you just go straight for the air wings? or do you click on a town or village and let them come to you first? and my losses on weapons and ammo are usually about

300 anti aircraft missile batteries lost
8000 anti aircraft missiles used

100 mid range missile batteries lost
15000 mid range missiles used

0 losses on Heavy tanks
900000 tank ammo used

At one time though I used to use fighter planes and drones like you as I was told about that tactic but found a cost effective way instead of spending a lot of my money on air to air missiles of which I find extremely expensive to buy and use.