how to call in arty air strikes an napalm

could some one please tell me hows to use these.

Hey, welcome to the forums.

You need a certain level of score for each kind of attack first of all. I believe the numbers are:

90-mortars
100-artillery
110-airstrike
120-napalm

After you reach one of those, you have to wait 45 seconds before you can launch. A message will come up telling you when you're ready. Press "B" to bring up your binoculars, Aim, and press "F" to fire.

Other Mods

Other mods also use airstrikes and such. I just want to note that they use other methods such as clicking fire to call the air strike. Almost all the mods have information on how to call airstrikes in. Im sure that they will all involve using the binoculars.