On 22 June 1941, most MiG-3s and MiG-1s were in the border military districts of the Soviet Union. The Leningrad Military District had 164, 135 were in the Baltic Military District, 233 in the Western Special Military District, 190 in the Kiev Military District and 195 in the Odessa Military District for a total of 917 on hand, of which only 81 were non-operational. An additional 64 MiGs were assigned to Naval Aviation, 38 in the Air Force of the Baltic Fleet and 26 in the Air Force of the Black Sea Fleet.