The short-lived operational commands were abolished. Two air armies, the 37th Air Army (long-range aviation) and the 61st Air Army (former Military Transport Aviation), were established directly under the Supreme Command. The former frontal aviation and anti-aircraft forces were organised as Air Force Armies and Anti-Aircraft Defense Armies under the military district commanders. There were initially four such armies with headquarters in St.Petersburg (Leningrad Military District), Rostov-on-Don (North Caucasus Military District), Khabarovsk (Far East Military District), and Chita (Siberian Military District). Two military districts had separate Air and Air Defence Corps. When the Transbaikal Military District and Siberian Military District were merged, the 14th Air Army was reactivated to serve as the air force formation in the area.