the total number of personnel assigned to Ninth Air Force would be more than 200,000, a total greater than that of Eighth Air Force. HQ Ninth Air Force extended IX Bomber Command's choice of targets considerably, although first priority for Operation Pointblank [the Combined Bomber Offensive (CBO) of US and RAF air forces against the Luftwaffe and German aircraft industry] and next priority for Operation Crossbow (codename for operations against German V-weapon sites) targets was maintained. U.S. and British Air Forces aimed to defeat the German Luftwaffe in the air and on the ground, to bring about complete air supremacy prior to the invasion of Normandy. Operational missions involved attacks on rail marshaling yards, railroads, airfields, industrial plants, military installations, and other enemy targets in France, Belgium, and the Netherlands. Other targets were German Atlantic Wall defenses along the English Channel coast of France. On 4 January 1944 XIX Air Support Command was activated at RAF Middle Wallop to support Patton's Third Army in Europe. In February 1944 the Ninth Air Force underwent a reorganization and several troop carrier groups relocated headquarters. Major General Otto P. Weyland became commanding general of XIX Air Support Command, replacing Major General Elwood R Quesada. The latter assumed dual command of both IX Fighter Command and the IX Air Support Command, which took control of all its fighter and reconnaissance units. HQ IX Air Support Command changed from Aldermaston Court to Middle Wallop. Major General Paul L. Williams, who had commanded the troop carrier operations in Sicily and Italy, replaced Giles in command of IX Troop Carrier Command. The IX TCC command and staff officers were an excellent mix of combat veterans from those earlier assaults, and a few key officers were held over for continuity. The groups assigned were a mixture of experience, but training would be needed to confront the expected massive movements of troops of the 82nd and 101st Airborne Divisions. On 18 April 1944, the IX and XIX Air Support Commands were redesignated, respectively, as IX Tactical Air Command and XIX Tactical Air Command. Between 1 May and the invasion on 6 June, the Ninth flew approximately 35,000 sorties, attacking targets such as airfields, railroad yards, and coastal gun positions. By the end of May 1944, the IX TCC had available 1,207 C-47 Skytrain troop carrier airplanes and was one-third overstrength, creating a strong reserve. Three-quarters of the aircraft were