Baltic Military District
In 1977 the VVS and the Soviet Air Defense Forces were re-organised in the Baltic states and the Leningrad Oblast, as a trial run for the larger re-organisation in 1980 covering the whole country. All fighter units in the PVO were transferred to the VVS, the Air Defence Forces only retaining the anti-aircraft missile units and radar units. The 6th independent Air Defense Army was disbanded, and the 15th Air Army became the VVS Baltic Military District.