The first Soviet unit to be equipped with the Tu-2 was 132nd Bomber Aviation Regiment of 3rd Air Army. The aircraft had its baptism of fire over Velikiye Luki. There, in November–December 1942, this Tupolev bomber flew 46 sorties. On February 11, 1943, 132 BAP was transferred to 17 VA to support the drive toward River Dnepr and it flew another 47 sorties - attacking airfields and rail junctions - until April 13, when the unit was removed from frontline. By that time only three Tu-2s were lost in action, while seven were damaged. The Tu-2 remained in service in the USSR until 1950. Some surplus Tu-2s were provided to the Chinese People's Liberation Army Air Force for use in the Chinese Civil War. Some Chinese Tu-2s were shot down by United Nations airmen during the Korean War. In the 1958–1962 'counter-riot actions' in the 1959 Tibetan uprising in Qinghai-Tibet Plateau covering Qinghai, Tibet, southern Gansu, and western Sichuan, Chinese PLAAF Tu-2s took on the roles of ground-attack, reconnaissance and liaison. The Chinese Tu-2s were retired at the end of the 1970s. After World War II, the Tu-2 proved to be an ideal test aircraft for various powerplants, including the first generation of Soviet jet engines. Variants "Aircraft 103" (ANT-58) The initial three-seat version. Top speed at . Two Mikulin AM-37 (water cooled V-12), 1941. "Aircraft 103U" (ANT-59) Redesigned for four-seat crew (influenced by Junkers Ju 88). Top speed dropped to . It used the same engines as the ANT-58. "Aircraft 103V" (ANT-60) As ANT-59 but powered by air-cooled Shvetsov ASh-82 engines after the AM-37 was cancelled. "Aircraft 104" Tu-2S modified for interceptor role. ANT-64 Long-range four-engine heavy bomber project developed from the Tu-2, cancelled in favor of Tu-4. ANT-66 52-seat airliner variant of ANT-64. SDB (ANT-63) High-speed day bomber prototype. Tu-1 (ANT-63R) Prototype three-seat night fighter version. Tu-2 Two Shvetsov ASh-82 (air cooling) with bigger drag, 1942. Tu-2D (ANT-62) Long-range version, it appeared in October 1944. It had an increased span and a crew of five aviators. Powered by two Shvetsov ASh-82FN, 1943 Tu-2D (ANT-67) Five-seat long-range bomber similar to ANT-62 but powered by Charomskiy ACh-30BF diesel engines, 1946. Tu-2DB (ANT-65) High-altitude reconnaissance bomber version developed from the Tu-2D, powered by two turbo-supercharged Mikulin AM-44TK engines. Tu-2F Photo-reconnaissance version. Tu-2G High-speed cargo transport version. Tu-2K Only two aircraft were built for testing ejection seats. Tu-2LL Tu-2's modified as testbeds.