internal districts, and the F. E. Dzerzhinsky Independent Special Designation Division in Moscow (transferred from the OGPU in 1934). In October 1940, a specialised NKVD force had also been formed to assist with local air defence for important areas. By June 1941 this new Main Directorate for Local Antiaircraft Defence had three regiments, including in Moscow, and four battalions, all engineer-anti-chemical units. Another division and five brigades totalling just under 30,000 men were in the process of formation. During World War II, most units of the NKVD Internal Troops were engaged alongside Red Army forces against Axis troops. They participated in the defense of Moscow, Leningrad, the Brest Fortress, Kiev, Odessa, Voronezh, Stalingrad, the North Caucasus and were heavily engaged during the Battle of Kursk. Typically, NKVD Internal Troops were defensive in nature, although they played a particularly instrumental role during the Battle of Moscow, the Siege of Leningrad, and the Battle of Stalingrad where the 10th NKVD Rifle Division suffered almost 90% casualties during the battle. Large VV units also stayed in the rear to maintain order, fight enemy infiltrators and to guard key installations (such as the armament manufacturing complex at Tula, protected by the 156th NKVD regiment in 1941) and the railway installations guarded by the 14th Railway Facilities Protection Division NKVD. Altogether, more than 53 Internal Troops divisions and 20 Internal Troops brigades were on active duty during the war. Of those, 18 units were awarded battle honors (military decorations or honorary titles). A total of 977,000 servicemen were killed in action. More than 100,000 soldiers and officers received awards for gallantry in the face of the enemy, and 295 servicemen were awarded the "Hero of the Soviet Union" title. Cold War After the war's end, Internal Troops played an important role in fighting local anti-Soviet partisans in the Baltic states (such as the Forest Brothers) and the Ukrainian Insurgent Army. In 1953, the Internal Troops suppressed the Vorkuta labor camp uprising with gunfire, which resulted in death of at least 100 political prisoners. A series of Internal Troops districts supervised many divisions, brigades, regiments, and battalions. Among them was the headquarters for Internal Troops in the Baltic area, which became Directorate Internal Troops NKVD-MVD-MGB Baltic Military District (Управление ВВ НКВД-МВД-МГБ Прибалтийского округа). This headquarters supervised several Internal Troops divisions, including the 14th Railway Facilities Protection Division from 1944 to 1951. Other divisions in the Baltic