Part I: How the Army went to War without adequate Air Support: British Concepts of Air Power and Air-Ground Operations, 1918-1933 ; Army-Air Co-operation and the Prelude to War, 1933-1939 ; War and Defeat in France ; The Search for Responsibility: post-mortem on the defeat of the BEF, 1940 ; Preliminary Campaigns in North Africa -- Part II: How a System of Air Support was Organised: The Army's Struggle for Air Support ; Direct Air Support for the Army in the Western Desert ; Debate, Decision, and Policy in 1942 ; Victory in North Africa through Superior Air Power ; The Birth of the Tactical Air Force -- Conclusion -- Appendix: Middle East (Army and RAF) Directive on direct Air Support issued by GHQ MEF and HQ RAF ME (30 September 1941).