AIRPORTS?

What are the three different kinds of airports (offensive, defensive, and regular) used for? Also, how do I move my military aircraft back to their bases? They are in the middle of the ocean by my country and I would like them to be by the military airports.

Quite frankly, you can answer the first part of your question yourself.

Secondly, the aircraft will be by your airport but because the map cant be drawn that accurately (though it is being updated) then it may appear they are off a bit, even in the sea.

There's a fourth type of airport too. Strategic, for nuclear bombers. Regular airports are for air transport corps and sending stuff to help countries that need it, via cargo planes. More airports = more flights of aid.

Crafty.
Thanks for helping so many people.

Every air transport corporations comes with a civilian airport.

you can redraw your map (maps menu option).
you can move your airports away from the coast and from your borders.

Once this is done, the next repaint (could take some time) will move the air air force units closer to the new location of the base.