The Baltic Military District () was a military district of the Soviet armed forces in the Baltic states, formed briefly before the German invasion during the World War II. After end of the war the Kaliningrad Oblast was added to the District's control in 1946, and the territory of Estonia was transferred back to the Baltic Military District from the Leningrad Military District in 1956. The Baltic Military District was disbanded after the fall of the Soviet Union in 1991 and reorganised into the North Western Group of Forces, which ended its existence after withdrawal of all Russian troops from Estonia, Latvia and Lithuania on 1 September 1994. World War II First formation The Baltic Military District was first created by order of the USSR People's Commissar of Defence on 11 July 1940, under the command of Colonel General Alexander Loktionov. Its headquarters was formed from the headquarters of the disbanded Kalinin Military District in Riga on 13 August. This was after the Soviet occupation of the Baltic States but before they were forcibly legally absorbed into the Soviet Union. It controlled troops on the territory of the Latvian and Lithuanian Soviet Socialist Republics as well as the western part of Kalinin Oblast. On 17 August 1940 it became the Baltic Special Military District, changing its boundaries to control troops on the territory of Estonian, Latvian, and Lithuanian Soviet Socialist Republics. The western part of Kalinin Oblast was transferred to control of the Moscow Military District. The district was created in order to strengthen the defense of the northwestern borders of the Soviet Union and to protect the approaches to Moscow and Leningrad from German-controlled East Prussia. The district troops closely cooperated with the Baltic Fleet. In August, the district included the 8th and 11th Armies, soon augmented in September by the transformation of the Estonian, Latvian, and Lithuanian armies into the Red Army's 22nd, 24th Territorial, and 29th Territorial Rifle Corps respectively. However they were notoriously unreliable and defected in large numbers to the Germans after June 1941. In 1940 and 1941 the district formed new units, including two mechanized corps (the 3rd and 12th), as well as local and republic military commissariats. Loktionov was replaced by Lieutenant General Fyodor Kuznetsov in December 1940. In May 1941, the headquarters of the 27th Army was formed by the district. At the same time, the district headquarters developed a plan for