60-509: The SU-100 ( Samokhodnaya Ustanovka 100) is a Soviet tank destroyer armed with the D-10S 100 mm anti-tank gun in a casemate superstructure . It was used extensively during the last year of World War II and saw service for many years afterwards with the armies of Soviet allies around the world. The SU-85 was developed from the chassis of the T-34 tank replacing the turret with
120-538: A ban on professional employment, the refusal of higher education for the dissidents' children, police harassment and prison. During the 1980s, Czechoslovakia became one of the most tightly controlled Communist regimes in the Warsaw Pact in resistance to the mitigation of controls notified by Soviet president Mikhail Gorbachev . In 1989, the Velvet Revolution restored democracy. This occurred around
180-627: A chance for many of their compatriots to participate in communal life before independence. Palacký supported Austro-Slavism and worked for a reorganized federal Austrian Empire , which would protect the Slavic speaking peoples of Central Europe against Russian and German threats. An advocate of democratic reform and Czech autonomy within Austria-Hungary, Masaryk was elected twice to the Reichsrat (Austrian Parliament), from 1891 to 1893 for
240-592: A larger, fixed superstructure that allowed a larger gun to be fitted: the 85 mm D-5 gun , providing dramatically upgraded firepower compared to the T-34's 76.2 mm models. Introduced to service in 1943, the SU-85 was quickly rendered obsolete as a new tank design featured the same gun on the T-34-85 . This prompted the design of a more advanced turretless tank destroyer with an even more powerful cannon. Development
300-467: A major factor in the 1980s. Slightly after the foundation of Czechoslovakia in 1918, there was a lack of essential infrastructure in many areas – paved roads , railways , bridges , etc. Massive improvement in the following years enabled Czechoslovakia to develop its industry. Prague 's civil airport in Ruzyně became one of the most modern terminals in the world when it was finished in 1937. Tomáš Baťa ,
360-511: A political monopoly was held by the Communist Party of Czechoslovakia (KSČ). The leader of the KSČ was de facto the most powerful person in the country during this period. Gustáv Husák was elected first secretary of the KSČ in 1969 (changed to general secretary in 1971) and president of Czechoslovakia in 1975. Other parties and organizations existed but functioned in subordinate roles to
420-544: A range of 2,000 m (1.2 mi) and the sloped 80 mm (3.1 in) front armor of the German Panther from 1,500 m (0.93 mi) (with APCBC round). The hull of the SU-100 had major improvements over the SU-85 ; the thickness of the front armour was increased from 45 to 75 mm (1.8 to 3.0 in) with a constructional armour slope of 55 degrees, making armour as effective as 125 mm, which forced
480-559: A subcategory of SU, May refer to any of these SPAAWs : Czechoslovakia Czechoslovakia ( / ˌ tʃ ɛ k oʊ s l oʊ ˈ v æ k i . ə , ˈ tʃ ɛ k ə -, - s l ə -, - ˈ v ɑː -/ CHEK -oh-sloh- VAK -ee-ə, CHEK -ə-, -slə-, - VAH - ; Czech and Slovak : Československo , Česko-Slovensko ) was a landlocked country in Central Europe , created in 1918, when it declared its independence from Austria-Hungary . In 1938, after
540-648: A threat to German rule. Just like Jews, Poles, Serbs, and several other nations, Czechs were considered to be untermenschen by the Nazi state. In 1940, in a secret Nazi plan for the Germanization of the Protectorate of Bohemia and Moravia it was declared that those considered to be of racially Mongoloid origin and the Czech intelligentsia were not to be Germanized. The deportation of Jews to concentration camps
600-777: A unified Czechoslovakia was restored after World War II (after the country had been divided during the war), the conflict between the Czechs and the Slovaks surfaced again. The governments of Czechoslovakia and other Central European nations deported ethnic Germans, reducing the presence of minorities in the nation. Most of the Jews had been killed during the war by the Nazis. Ethnicities of Czechoslovakia in 1921 Ethnicities of Czechoslovakia in 1930 *Jews identified themselves as Germans or Hungarians (and Jews only by religion not ethnicity),
660-570: The Munich Agreement , the Sudetenland became part of Nazi Germany , while the country lost further territories to Hungary and Poland (the territories of southern Slovakia with a predominantly Hungarian population to Hungary and Zaolzie with a predominantly Polish population to Poland). Between 1939 and 1945, the state ceased to exist, as Slovakia proclaimed its independence and Carpathian Ruthenia became part of Hungary , while
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#1732779689921720-664: The NSDAP in the December 1938 elections. Almost every decree explicitly stated that the sanctions did not apply to antifascists. Some 250,000 Germans, many married to Czechs, some antifascists, and also those required for the post-war reconstruction of the country, remained in Czechoslovakia. The Beneš Decrees still cause controversy among nationalist groups in the Czech Republic, Germany, Austria and Hungary. Following
780-666: The Panzer IV and StuG III to all but the closest ranges and the Tiger I having to close in at less than 1 km. Additional improvements were the commander's workplace, as it now was made in a small sponson on the right side of the hull; combined with the commander's cupola this improved the commander's effectiveness. Its German Jagdpanzer -family counterparts — the Jagdpanzer IV , Jagdpanther and Jagdtiger , by comparison, lacked this key piece of observational equipment. On
840-652: The Sudetenland . On 29 September 1938, Britain and France ceded control in the Appeasement at the Munich Conference ; France ignored the military alliance it had with Czechoslovakia. During October 1938, Nazi Germany occupied the Sudetenland border region, effectively crippling Czechoslovak defences. The First Vienna Award assigned a strip of southern Slovakia and Carpathian Ruthenia to Hungary. Poland occupied Zaolzie, an area whose population
900-742: The Tiger II . The gun was excellent, being able to penetrate the Tiger I at 2 km with APCBC rounds while its APHE rounds could penetrate a max of 218 mm of armour. The SU-100 especially saw extensive service during the last year of the war. It was used en masse in Hungary in March 1945, when Soviet forces defeated the German Operation Frühlingserwachen offensive at Lake Balaton . And although not intended for it,
960-649: The Ukrainian SSR (a republic of the Soviet Union ). The Communist Party seized power in a coup in 1948 . From 1948 to 1989, Czechoslovakia was part of the Eastern Bloc with a planned economy . Its economic status was formalized in membership of Comecon from 1949 and its defense status in the Warsaw Pact of 1955. A period of political liberalization in 1968, the Prague Spring , ended when
1020-633: The Vietnam People's Army and the Korean People's Army Ground Force . SU-100s entered service with the People's Liberation Army (PLA) of China after 1 December 1950 when Soviet forces left Dalian . The armaments in Dalian were sold to China, including 99 SU-100s, 18 IS-2 heavy tanks, and 224 T-34s, with which PLA formed its 1st Mechanised Division. In April 2015, a SU-100 self-propelled gun
1080-790: The Young Czech Party , and from 1907 to 1914 for the Czech Realist Party , which he had founded in 1889 with Karel Kramář and Josef Kaizl . During World War I a number of Czechs and Slovaks, the Czechoslovak Legions , fought with the Allies in France and Italy, while large numbers deserted to Russia in exchange for its support for the independence of Czechoslovakia from the Austrian Empire. With
1140-618: The autonomous regions of Slovakia and Subcarpathian Ruthenia. Annexed by Hungary (1939–1945). ČSR; declared a "people's democracy" (without a formal name change) under the Ninth-of-May Constitution following the 1948 coup . ČSSR; from 1969, after the Prague Spring , consisted of the Czech Socialist Republic (ČSR) and Slovak Socialist Republic (SSR). Oblast of the Ukrainian SSR . Oblast of Ukraine . After World War II,
1200-911: The 1946 parliamentary election, the Communist Party of Czechoslovakia was the winner in the Czech lands , and the Democratic Party won in Slovakia. In February 1948 the Communists seized power . Although they would maintain the fiction of political pluralism through the existence of the National Front , except for a short period in the late 1960s (the Prague Spring ) the country had no liberal democracy . Since citizens lacked significant electoral methods of registering protest against government policies, periodically there were street protests that became violent. For example, there were riots in
1260-609: The 1967 Six-Day War and the 1973 Yom Kippur War . It was modified slightly to adapt it to the sandy conditions of the Middle East, thus creating the SU-100M variant . Exported SU-100s continued in service until the 1970s, and in some countries, even later. The Su-100 saw service during the Yugoslav Wars , but was quickly retired due to a lack of spare parts, despite its satisfactory performance. The SU-100 remains in use by
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#17327796899211320-450: The 19th century, when philologists and educators, influenced by Romanticism , promoted the Czech language and pride in the Czech people . Nationalism became a mass movement in the second half of the 19th century. Taking advantage of the limited opportunities for participation in political life under Austrian rule, Czech leaders such as historian František Palacký (1798–1876) founded various patriotic, self-help organizations which provided
1380-586: The Baltic Sea from the north, and Mediterranean Sea from the south. There is no continental weather. The area was part of the Austro-Hungarian Empire until it collapsed at the end of World War I . The new state was founded by Tomáš Garrigue Masaryk , who served as its first president from 14 November 1918 to 14 December 1935. He was succeeded by his close ally Edvard Beneš (1884–1948). The roots of Czech nationalism go back to
1440-607: The Czech intelligentsia; the intellectual elites and middle class made up a considerable number of the 200,000 people who passed through concentration camps and the 250,000 who died during German occupation. Under Generalplan Ost , it was assumed that around 50% of Czechs would be fit for Germanization . The Czech intellectual elites were to be removed not only from Czech territories but from Europe completely. The authors of Generalplan Ost believed it would be best if they emigrated overseas, as even in Siberia they were considered
1500-629: The Czechs of the Protectorate Bohemia and Moravia, German occupation was a period of brutal oppression. Czech losses resulting from political persecution and deaths in concentration camps totaled between 36,000 and 55,000. The Jewish populations of Bohemia and Moravia (118,000 according to the 1930 census) were virtually annihilated. Many Jews emigrated after 1939; more than 70,000 were killed; 8,000 survived at Terezín. Several thousand Jews managed to live in freedom or in hiding throughout
1560-545: The German Protectorate of Bohemia and Moravia was proclaimed in the remainder of the Czech Lands . In 1939, after the outbreak of World War II , former Czechoslovak President Edvard Beneš formed a government-in-exile and sought recognition from the Allies . After World War II, Czechoslovakia was reestablished under its pre-1938 borders, with the exception of Carpathian Ruthenia, which became part of
1620-536: The German war effort was accelerated. Under the authority of Karl Hermann Frank , German minister of state for Bohemia and Moravia, some 350,000 Czech laborers were dispatched to the Reich. Within the protectorate, all non-war-related industry was prohibited. Most of the Czech population obeyed quiescently up until the final months preceding the end of the war, while thousands were involved in the resistance movement . For
1680-647: The Gulf War with a small force of 200 troops under the command of the U.S.-led coalition. In 1992, because of growing nationalist tensions in the government, Czechoslovakia was peacefully dissolved by parliament. On 31 December 1992, it formally separated into two independent countries, the Czech Republic and the Slovak Republic . ČSR; boundaries and government established by the 1920 constitution . Annexed by Nazi Germany . ČSR; included
1740-751: The KSČ. All political parties, as well as numerous mass organizations, were grouped under umbrella of the National Front . Human rights activists and religious activists were severely repressed. Czechoslovakia had the following constitutions during its history (1918–1992): In the 1930s, the nation formed a military alliance with France, which collapsed in the Munich Agreement of 1938. After World War II , an active participant in Council for Mutual Economic Assistance ( Comecon ), Warsaw Pact , United Nations and its specialized agencies; signatory of conference on Security and Cooperation in Europe . Before World War II,
1800-535: The Russian Army holding facilities. Many Warsaw Pact countries also used the SU-100, as did Soviet allies such as Egypt, Angola and Cuba . A few SU-100 were delivered to Yugoslavia after the war, under the designation M-44. The SU-100 saw service in the fighting that accompanied the 1956 Suez Crisis , in which the Egyptians used SU-100s against Israel's M4 Sherman tanks. The vehicle was also utilized in
1860-749: The SU-100 was also used in the Battle of Berlin because its gun could deal with heavy fortifications. However, its lack of a machine gun made it need aircraft and infantry support. By July 1945, 2,335 SU-100s had been built. The vehicle remained in service with the Red Army well after the war; production continued in the Soviet Union until 1947 and into the 1950s in Czechoslovakia . It was withdrawn from Soviet service in 1967 but many vehicles were transferred to reserve stocks. Some exist to this day in
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1920-604: The Slovaks, who were hostile to the more numerous Czechs, weakened the country in the late 1930s. Slovakia became autonomous in the fall of 1938, and by mid-1939, Slovakia had become independent, with the First Slovak Republic set up as a satellite state of Nazi Germany and the far-right Slovak People's Party in power . After 1933, Czechoslovakia remained the only democracy in central and eastern Europe. In September 1938, Adolf Hitler demanded control of
1980-492: The Soviet Union, assisted by other Warsaw Pact countries, invaded Czechoslovakia . In 1989, as Marxist–Leninist governments and communism were ending all over Central and Eastern Europe , Czechoslovaks peacefully deposed their communist government during the Velvet Revolution , which began on 17 November 1989 and ended 11 days later on 28 November when all of the top Communist leaders and Communist party itself resigned. On 31 December 1992, Czechoslovakia peacefully split into
2040-502: The Soviet Union, gradually put the brakes on their earlier liberal policies. Meanwhile, one plank of the reform program had been carried out: in 1968–69, Czechoslovakia was turned into a federation of the Czech Socialist Republic and Slovak Socialist Republic . The theory was that under the federation, social and economic inequities between the Czech and Slovak halves of the state would be largely eliminated. A number of ministries, such as education, now became two formally equal bodies in
2100-503: The economy was about the fourth in all industrial countries in Europe. The state was based on strong economy, manufacturing cars ( Škoda , Tatra ), trams, aircraft ( Aero , Avia ), ships, ship engines ( Škoda ), cannons, shoes ( Baťa ), turbines, guns ( Zbrojovka Brno ). It was the industrial workshop for the Austro-Hungarian empire. The Slovak lands relied more heavily on agriculture than the Czech lands. After World War II,
2160-424: The economy was centrally planned, with command links controlled by the communist party, similarly to the Soviet Union . The large metallurgical industry was dependent on imports of iron and non-ferrous ores. After World War II, the country was short of energy, relying on imported crude oil and natural gas from the Soviet Union, domestic brown coal , and nuclear and hydroelectric energy . Energy constraints were
2220-553: The expulsion of the ethnic German population from Czechoslovakia, parts of the former Sudetenland , especially around Krnov and the surrounding villages of the Jesenik mountain region in northeastern Czechoslovakia, were settled in 1949 by Communist refugees from Northern Greece who had left their homeland as a result of the Greek Civil War . These Greeks made up a large proportion of the town and region's population until
2280-670: The guidance of F. F. Petrov . After the Second World War this gun was installed on T-54 and T-55 tanks; these vehicles and their derivatives were in service forty years after initial development. It was built at the UZTM (Russian abbreviation УЗТМ for Уральский Завод Тяжелого Машиностроения – Ural Heavy Machinery Factory, also called Uralmash ) in Yekaterinburg . The SU-100 quickly proved itself to be able to penetrate around 125 mm (4.9 in) of vertical armor from
2340-589: The late 1980s/early 1990s. Although defined as "Greeks", the Greek Communist community of Krnov and the Jeseniky region actually consisted of an ethnically diverse population, including Greek Macedonians , Macedonians , Vlachs , Pontic Greeks and Turkish speaking Urums or Caucasus Greeks . Carpathian Ruthenia (Podkarpatská Rus) was occupied by (and in June 1945 formally ceded to) the Soviet Union. In
2400-547: The most industrialized regions of the former Austria-Hungary. The new country was a multi-ethnic state, with Czechs and Slovaks as constituent peoples . The population consisted of Czechs (51%), Slovaks (16%), Germans (22%), Hungarians (5%) and Rusyns (4%). Many of the Germans, Hungarians, Ruthenians and Poles and some Slovaks, felt oppressed because the political elite did not generally allow political autonomy for minority ethnic groups. This policy led to unrest among
2460-564: The non-Czech population, particularly in German-speaking Sudetenland , which initially had proclaimed itself part of the Republic of German-Austria in accordance with the self-determination principle. The state proclaimed the official ideology that there were no separate Czech and Slovak nations, but only one nation of Czechoslovaks (see Czechoslovakism ), to the disagreement of Slovaks and other ethnic groups. Once
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2520-497: The occupation. Despite the estimated 136,000 deaths at the hands of the Nazi regime, the population in the Reichsprotektorate saw a net increase during the war years of approximately 250,000 in line with an increased birth rate. On 6 May 1945, the third US Army of General Patton entered Plzeň from the south west. On 9 May 1945, Soviet Red Army troops entered Prague . After World War II, pre-war Czechoslovakia
2580-400: The occupations. In 1948, this provision was cancelled for the Hungarians, but only partially for the Germans. The government then confiscated the property of the Germans and expelled about 90% of the ethnic German population , over 2 million people. Those who remained were collectively accused of supporting the Nazis after the Munich Agreement , as 97.32% of Sudeten Germans had voted for
2640-418: The other hand, the SU-100's optics were a little inferior (4x optics vs German 5x optics). For better ventilation two ventilator units were installed, instead of only one as in the SU-85. Mass production began in September 1944. The SU-100 was introduced in October 1944 and quickly became popular with Soviet tank crews as its gun could penetrate virtually any German tank then in service until being outmatched by
2700-408: The outbreak of World War I, Masaryk began working for Czech independence in a union with Slovakia. With Edvard Beneš and Milan Rastislav Štefánik , Masaryk visited several Western countries and won support from influential publicists. The Czechoslovak National Council was the main organization that advanced the claims for a Czechoslovak state. The Bohemian Kingdom ceased to exist in 1918 when it
2760-474: The preservation of the Soviet, socialist system and vowed to intervene in any state that sought to replace Marxism-Leninism with capitalism . In the week after the invasion, there was a spontaneous campaign of civil resistance against the occupation. This resistance involved a wide range of acts of non-cooperation and defiance: this was followed by a period in which the Czechoslovak Communist Party leadership, having been forced in Moscow to make concessions to
2820-434: The prime architect of the Czechoslovak-Romanian-Yugoslav alliance (the " Little Entente ", 1921–38) directed against Hungarian attempts to reclaim lost areas. Beneš worked closely with France. Far more dangerous was the German element, which after 1933 became allied with the Nazis in Germany. Czech-Slovak relations came to be a central issue in Czechoslovak politics during the 1930s. The increasing feeling of inferiority among
2880-501: The reformer Alexander Dubček was appointed to the key post of First Secretary of the Czechoslovak Communist Party, there was a brief period of liberalization known as the Prague Spring . In response, after failing to persuade the Czechoslovak leaders to change course, five other members of the Warsaw Pact invaded . Soviet tanks rolled into Czechoslovakia on the night of 20–21 August 1968. Soviet Communist Party General Secretary Leonid Brezhnev viewed this intervention as vital for
2940-417: The same time as the fall of communism in Romania, Bulgaria, Hungary, East Germany and Poland. The word "socialist" was removed from the country's full name on 29 March 1990 and replaced by "federal". Pope John Paul II made a papal visit to Czechoslovakia on 21 April 1990, hailing it as a symbolic step of reviving Christianity in the newly-formed post-communist state. Czechoslovakia participated in
3000-504: The sum is, therefore, more than 100%. During the period between the two world wars Czechoslovakia was a democratic state. The population was generally literate, and contained fewer alienated groups. The influence of these conditions was augmented by the political values of Czechoslovakia's leaders and the policies they adopted. Under Tomas Masaryk , Czech and Slovak politicians promoted progressive social and economic conditions that served to defuse discontent. Foreign minister Beneš became
3060-417: The town of Plzeň in 1953 , reflecting economic discontent. Police and army units put down the rebellion, and hundreds were injured but no one was killed. While its economy remained more advanced than those of its neighbors in Eastern Europe, Czechoslovakia grew increasingly economically weak relative to Western Europe. The currency reform of 1953 caused dissatisfaction among Czechoslovak laborers. To equalize
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#17327796899213120-403: The two sovereign states of the Czech Republic and Slovakia . The country was of generally irregular terrain. The western area was part of the north-central European uplands. The eastern region was composed of the northern reaches of the Carpathian Mountains and lands of the Danube River basin. The weather is mild winters and mild summers. Influenced by the Atlantic Ocean from the west,
3180-445: The two formally equal republics. However, the centralized political control by the Czechoslovak Communist Party severely limited the effects of federalization. The 1970s saw the rise of the dissident movement in Czechoslovakia, represented among others by Václav Havel . The movement sought greater political participation and expression in the face of official disapproval, manifested in limitations on work activities, which went as far as
3240-410: The wage rate, Czechoslovaks had to turn in their old money for new at a decreased value. The banks also confiscated savings and bank deposits to control the amount of money in circulation. In the 1950s, Czechoslovakia experienced high economic growth (averaging 7% per year), which allowed for a substantial increase in wages and living standards, thus promoting the stability of the regime. In 1968, when
3300-429: Was conducted under supervision of L. I. Gorlitskiy , chief designer of all medium Soviet self-propelled guns. The work started in February 1944 and the first prototype of the SU-100, "Object 138", was delivered in March. After intensive testing with different models of 100 mm gun Soviet engineers approved the D-10S gun for mass production. This gun was developed in Constructors Bureau of Artillery Factory No. 9 under
3360-464: Was incorporated into Czechoslovakia. Czechoslovakia was founded in October 1918, as one of the successor states of the Austro-Hungarian Empire at the end of World War I and as part of the Treaty of Saint-Germain-en-Laye . It consisted of the present day territories of Bohemia , Moravia , parts of Silesia making up present day Czech Republic , Slovakia , and a region of present-day Ukraine called Carpathian Ruthenia . Its territory included some of
3420-483: Was majority Polish, in October 1938. On 14 March 1939, the remainder ("rump") of Czechoslovakia was dismembered by the proclamation of the Slovak State , the next day the rest of Carpathian Ruthenia was occupied and annexed by Hungary, while the following day the German Protectorate of Bohemia and Moravia was proclaimed. The eventual goal of the German state under Nazi leadership was to eradicate Czech nationality through assimilation, deportation, and extermination of
3480-404: Was organized under the direction of Reinhard Heydrich , and the fortress town of Terezín was made into a ghetto way station for Jewish families. On 4 June 1942 Heydrich died after being wounded by an assassin in Operation Anthropoid . Heydrich's successor, Colonel General Kurt Daluege , ordered mass arrests and executions and the destruction of the villages of Lidice and Ležáky . In 1943
3540-566: Was photographed being used in Yemen as part of the ongoing conflict . Video evidence uploaded to YouTube in November 2016 showed an apparent SU-100 being knocked out by an anti-tank guided missile in Yemen. Samokhodnaya Ustanovka Samohodnaya Ustanovka (SU; Russian : самоходная установка, СУ , lit. "Self-propelled installation") may refer to any of these Soviet casemate self-propelled guns : Zenitnaya Samokhodnaya Ustanovka (Russian: з енитная с амоходная у становка - ЗСУ, lit. Zenithal (anti-aircraft) self-propelled installation),
3600-437: Was reestablished, with the exception of Sub carpathian Ruthenia , which was annexed by the Soviet Union and incorporated into the Ukrainian Soviet Socialist Republic . The Beneš decrees were promulgated concerning ethnic Germans (see Potsdam Agreement ) and ethnic Hungarians. Under the decrees, citizenship was abrogated for people of German and Hungarian ethnic origin who had accepted German or Hungarian citizenship during
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