This is the fifth volume of the Air Defence of Great Britain series. It is a comprehensive study of the way in which air supremacy was contested with the Luftwaffe and finally won. The narrative covers from when the threat of invasion was at its most dangerous, and goes on the relate the history of enemy low level attacks, the reducing scale of enemy activity, air defence in home waters and by both day and night over land, fighter offensives, anti-intruder operations at night, German strategy, and preparations for cross-Channel operations (including Operation Jubilee) and all other relevant aspects of the air war. Fundamental to an understanding of the development of air tactics and strategy in World War Two. It continues this important story right to the end of the war.