Help with war

Hello everyone
I'm having a lot of troubles with war
I'm trying to conquer a C3 country but I can not even to damage them
My enemy have
6 interceptors wings
2 helicopters wings
5 air force attack units
6 air force attack and bombing
4 supply units
2 long range division

I attack to the defence first with my air force and with my air force attack bombing but they destroy my units and i can't damage him
Please, somebody say me what i should to do

Buy some offensive anti aircraft batteries and use it to destroy their air defence. Then you should be able to take out the land targets however you like, with air or missiles.

Thank you so much John Galt for your help but can you be more specific?
My knowledge is ridiculous lol
I know purchase weapons and to set up units but i don't know how to do for to be successful

Per example, offensive anti aircraft batteries are good against the helicopter and interceptors wings enemy but can i to purchase 500 OAAB and to launch those single weapons against the enemy or i should to set up a unit?

I love the economic part of this game but i want to have more countries and i it's disappoint me so much because i feel is not possible for me

Salutes

Purchase 4290 ooamb Then create 3 divisions with 1430 oaamb each. Use those divisions to attack the air defence.

John Galt,

Ah yes, the good old, 100% Offensive Anti Aircraft Missile Battery, Long Range Division, Exploit. Poor C3's, custom blueprints make them so easy to kill.

To be clear though, this is only possible against C3's. Players will rip through such an unbalanced division.

Signed President of DanNation on LU

I wouldnt call it an exploit . Just a good strategy for c3 raiding.

John Galt thank you so so much
Now im understanding the war feature
Im destroying his air defense with the oaab
My problem now are the missiles because im always runing low hahahah

Do you have some suggestions for the ground invasion?

I should to add that I'm not raiding, i want to conquer it

Thank you and Daniel for your tips

Do you share a land border with the country?

Yes i do
Sorry the delay responding

I would go with heavy tank/heavy artillery divisions then for the ground war and capturing territory. Beware of forts they take a lot of ammo to destroy. Clear garrison of fort with tank/arty and then destroy the fort with a cruise missile.

When you say forts do you mean fortification?
I have destroyed every fortification

Im having problems invading cities
I have destroyed the defenses of the city, my radar plane says that the city is undefended but i can not invade because a red box with the ! symbol appears between my unit and the city
The log says this:
"Cavan stopped moving in The Empire of Parana. The defense at the city
needs to be destroyed before you can invade The Empire of Parana any futher."

I attack with every weapon (air and land) and i never damage that defense
The log always says this:

Jun 09 4489. Special Forces 'Katti' attacks the city of 'Cadiz'.
The Empire of Parana (the attacked country,C3WL0) reports:
No weapon losses were reported.
The defence was assisted by the Garrison TG2086.
The War Inde

And of course i have my units in the enemy land
I have +20 areas conquered

Marco you have to click Attack Target and destroy the city. You can't capture cities like you do territory. You have already destroyed the garrison that is why attack defense is not doing anything.

Wtf??? lol
Ok John Galt
Thank you so much for your help
Im sure that i can't do anything for you but if you need something that i can do just tell me

Best regards

No problem happy to help.