448th Fighter - Bomber Group The 448th Fighter - Bomber Group is an inactive United States Air Force unit . Its last assignment was to the 448th Fighter - Bomber Wing , stationed at Hensley Field , Texas . It was inactivated on 16 November 1957 . During World War II , its predecessor unit , the 448th Bombardment Group was an Eighth Air Force B - 24 Liberator unit in England . Assigned to RAF Seething in late 1943 , the group flew its last combat mission on 25 April 1945 , attacking a marshalling yard at Salzburg , Austria . It returned to the United States in July 1945 , and was assigned to Second Air Force for B - 29 Superfortress conversion and training . The end of the Pacific War canceled the deployment of the group to Okinawa , the unit remaining at McCook Army Airfield , Nebraska , its stage - 3 training base when training was complete , then moved to Fort Worth AAF when McCook was closed . In the postwar era , the 448th Bombardment Group was one of the original ten USAAF bombardment groups assigned to Strategic Air Command on 21 March 1946 . The unit was inactivated on 4 August 1946 at Fort Worth , its B - 29 aircraft and personnel being reassigned to the senior 92d Bombardment Group which was reactivated due to the Air Force ' s policy of retaining only low - numbered groups on active duty after the war . Allocated to the Air Force Reserve as a Tactical Air Command B - 26 Invader light bomb group in 1947 ; activated in 1951 with its personnel and aircraft being reassigned to active duty units in Far East Air Forces for combat in Korea ; inactivated immediately afterward . Briefly activated as a fighter - bomber group in the late 1950s , inactivated 1957 . History . World War II . Activated 1 May 1943 at Gowen Field Idaho were initial training was conducted . Then the unit moved to Wendover Field , Utah on the Fourth of July 1943 for the second phase of training , and finial training at Sioux City AAB , Iowa from 16 September to early November 1943 . The ground unit went to Camp Shanks , New York , and sailed on the Queen Elizabeth on 23 November 1943 , and arrived at Clyde on 29 November 1943 . The aircraft left Sioux City on the third of November 1943 for Herrington field in Kansas . The aircraft flew for The United Kingdom via the Southern ferry route from Puerto Rico , Trinidad , Belém , Dakar , and Marrakesh . Three aircraft were lost in route . Moved to RAF Seething England , November – December 1943 , and assigned to Eighth Air Force . Assigned to the 20th Combat Bombardment Wing . The group tail code was a " Circle - I " . The 448th flew B - 24 Liberator s as part of the Eighth Air Force ' s strategic bombing campaign . The group enered combat on 22 December 1943 , and until April 1945 served primarily as a strategic bombardment organization , hitting such targets as aircraft factories in Gotha , ball - bearing plants in Berlin , an airfield at Hanau , U - boat facilities at Kiel , a chemical plant at Ludwigshafen , synthetic oil refineries at Politz , aircraft engine plants at Rostock , marshalling yards at Cologne , and a Buzz - bomb assembly plant at Fallersleben . The group took part in the intensive campaign of heavy bombers against the German aircraft industry during Big Week , 20 – 25 February 1944 . In addition to strategic operations , flew interdictory and support missions . Bombed V - weapon sites , airfields , and transportation facilities prior to the Normandy invasion in June 1944 , and on D - Day attacked coastal defenses and choke points . Struck enemy positions to assist the Allied offensive at Caen and the breakthrough at Saint - Lô in July . Dropped supplies to airborne troops near Nijmegen during the airborne attack on Holland in September . Bombed transportation and communications centers in the combat zone during the Battle of the Bulge , December 1944 – January 1945 . Dropped supplies to troops at Wesel during the airborne assault across the Rhine in March 1945 . The group flew its last combat mission on 25 April , attacking a marshalling yard at Salzburg . Redeployed to the US June / July 1945 . First of the aircraft departed the United Kingdom on mid - June 1945 . The ground echelon sailed from Greenock on the Queen Mary on the sixth of July 1945 , arriving in New York on 11 July 1945 Cold War . Group established at Sioux Falls AAFd , South Dakota where the Group was trained as a B - 29 unit under Second Air Force . On the sixth of May 1946 the 715 Bomb Squadron was re - assigned to the 509th Bomb Group . Inactivated in August 1946 at Fort Worth AAF , Texas and its mission , personnel , and equipment were transferred to the 92d Bombardment Group . Reactivated in April 1947 as a reserve Tactical Air Command Fighter - Bomber unit at Long Beach Airport , California . Mmost personnel called up to active duty during the Korean War and assigned to other units . Inactivated March 1951 . Reactivated as a reserve F - 86 fighter bomber group in 1955 at Dallas NAS ( Hensley Field ) . Inactivated 1957