9Th Air Force: American Tactical Aviation in the ETO, 1943-45

During the preparation of the Normandy Invasion, the American high command realized soon enough that the 8th Air Force, which was wholly committed to strategic bombing, could not undertake the close support of ground units in this major offensive. The keystone of operation “Overlord” would indeed be mastery of the skies: tactical aviation had to be able to intervene quickly and precisely, and to operate from bases on the Continent.

The heavy bombers, as they were dependent on large and perman…