Airpower!
Military scholar Colin S Gray has completed and released his study, “Air power for Strategic Effect” through the Air Force University Press and its 367-pages are available for Free here http://aupress.au.af.mil/digital/pdf/book/Colin_Gray_Airpower.pdf
It has much insight into air-power doctrine and maxims from 1916 through the current morass in SW Asia and included such gems as this one from the Fulda Gap era:
“The goal of Assault Breaker was to field a system capable of destroying two thousand vehicles operating between twenty and one
hundred kilometers behind the front lines in a span of three hours.”
Enjoy