 When the regular Air Force implemented the wing base organization system, which placed operational and support units on a base under a single wing that same year, the 307th Wing, along with other reserve wings with more than one combat group assigned, was renamed an air division.In the case of the 307th, this also prevented confusion with the regular 307th Bombardment Wing, which was organized at MacDill Air Force Base, Florida in August 1947.The 307th participated in routine reserve training and supervised the training of its assigned groups until it was inactivated, in part due to President Truman’s 1949 defense budget, which required reductions in the number of units in the Air Force.