Regardless of your tactics, your enemy will also want to fight you in the manner that you are weakest and they are strongest. Moreover the dominant faction has to protect and their opponents can hit and run (generally gets to choose the time and place of the engagement, someplace where you have a weak presence)
Turboprops can take off from a dirt runway. Air "bases" in the conventional sense weren't necessary for them to get planes in the air, a strip of dirt road would do.