(17) They produced what came to be called the "Wann-Woodall" report, which outlined a system of control for air support that formed the basis of the eventual tactical air doctrine. (18) The essentials of the Wann-Woodall system was the establishment of a joint Army-RAF headquarters which would control a composite force of aircraft, and the creation of a radio network outside of the normal Army chain-of-command specifically dedicated to air support.
Jacobs, "Tactical Air Doctrine and AAF Close Air Support in the European Theater, 1944-1945" pp.
The other offerings on the war also provide much food for thought: James Sterret on Soviet air doctrine, Brad Gladman on tactical air doctrine
in North Africa, and Ian MacFarling on Australia and the Pacific air war will supply most readers with a wealth of new information and ideas.