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Piasecki H-21

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A tandem-rotor aircraft is an aircraft with two large helicopter rotor assemblies mounted one in front of the other in the horizontal plane . This configuration is mainly used for large cargo helicopters. Such aircraft are often informally referred to as "Chinooks," after the CH-47 Chinook , one of the first widely adopted heavy-lift helicopters with a tandem-rotor configuration.

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91-624: The Piasecki H-21 Workhorse/Shawnee is an American helicopter, the fourth of a line of tandem rotor helicopters designed and built by Piasecki Helicopter (later Boeing Vertol ). Commonly called "the flying banana", it was a multi-mission helicopter, capable of being fitted with wheels, skis or floats. The H-21 was originally developed by Piasecki as an Arctic rescue helicopter. The H-21 had cold-weather features permitting operation at temperatures as low as −65 °F (−54 °C) and could be routinely maintained in severe cold weather environments. Piasecki Helicopter designed and successfully sold to

182-476: A pervasive cult of personality around Adolf Hitler to influence public opinion. The government controlled artistic expression, promoting specific art forms and banning or discouraging others. Genocide , mass murder , and large-scale forced labour became hallmarks of the regime; the implementation of the regime's racial policies culminated in the Holocaust . After the initial success of German invasion of

273-492: A tail rotor , coaxial rotors , and the NOTAR systems. Tandem-rotor helicopters, however, use counter-rotating rotors , with each cancelling out the other's torque . Therefore, all of the power from the engines can be used for lift , whereas a single-rotor helicopter uses some of the engine power to counter the torque. An alternative is to mount two rotors in a coaxial configuration. The first successful tandem-rotor helicopter

364-898: A CH-21 Shawnee near the Laotian-Vietnamese border with the death of four aviators in July 1962 were some of the U.S. Army's earliest casualties in the Vietnam War . Despite these events, the Shawnee continued in service as the U.S. Army's helicopter workhorse in Vietnam until 1964 when it was replaced with the Bell UH-1 Huey . In 1965, the Boeing CH-47 Chinook was deployed to Vietnam and later that year, most CH-21 helicopters were withdrawn from active inventory in

455-488: A communist uprising. The Reichstag Fire Decree , imposed on 28 February 1933, rescinded most civil liberties, including rights of assembly and freedom of the press. The decree also allowed the police to detain people indefinitely without charges. The legislation was accompanied by a propaganda campaign that led to public support for the measure. Violent suppression of communists by the SA was undertaken nationwide and 4,000 members of

546-580: A massive secret rearmament program , forming the Wehrmacht (armed forces). The return to economic stability boosted the regime's popularity. Germany made increasingly aggressive territorial demands, threatening war if they were not met. Germany seized Austria in the Anschluss of 1938, and demanded and received the Sudetenland region of Czechoslovakia. Germany signed a non-aggression pact with

637-657: A non-aggression pact with Poland. In March 1939, Hitler demanded the return of the Free City of Danzig and the Polish Corridor , a strip of land that separated East Prussia from the rest of Germany. The British announced they would come to the aid of Poland if it was attacked. Hitler, believing the British would not take action, ordered an invasion plan should be readied for September 1939. On 23 May, Hitler described to his generals his overall plan of not only seizing

728-474: A protectorate of France under the condition that its residents would later decide by referendum which country to join, and Poland became a separate nation and was given access to the sea by the creation of the Polish Corridor , which separated Prussia from the rest of Germany, while Danzig was made a free city . Germany regained control of the Saarland through a referendum held in 1935 and annexed Austria in

819-459: A second national anthem. Germany was still in a dire economic situation, as six million people were unemployed and the balance of trade deficit was daunting. Using deficit spending , public works projects were undertaken beginning in 1934, creating 1.7 million new jobs by the end of that year alone. Average wages began to rise. The SA leadership continued to apply pressure for greater political and military power. In response, Hitler used

910-713: A substantial minority of Germans, who lived mostly in the Sudetenland . Under pressure from separatist groups within the Sudeten German Party , the Czechoslovak government offered economic concessions to the region. Hitler decided not just to incorporate the Sudetenland into the Reich, but to destroy the country of Czechoslovakia entirely. The Nazis undertook a propaganda campaign to try to generate support for an invasion. Top German military leaders opposed

1001-626: A thousand people (out of a population of around 16,000) committed suicide in Demmin around 1 May 1945 as the 65th Army of 2nd Belorussian Front first broke into a distillery and then rampaged through the town, committing mass rapes, arbitrarily executing civilians, and setting fire to buildings. High numbers of suicides took place in many other locations, including Neubrandenburg (600 dead), Stolp in Pommern (1,000 dead), and Berlin, where at least 7,057 people committed suicide in 1945. Estimates of

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1092-896: A war fought on two fronts. The invasion conquered a huge area, including the Baltic states, Belarus , and west Ukraine . After the successful Battle of Smolensk in September 1941, Hitler ordered Army Group Centre to halt its advance to Moscow and temporarily divert its Panzer groups to aid in the encirclement of Leningrad and Kyiv . This pause provided the Red Army with an opportunity to mobilise fresh reserves. The Moscow offensive, which resumed in October 1941, ended disastrously in December . On 7 December 1941, Japan attacked Pearl Harbor , Hawaii. Four days later, Germany declared war on

1183-515: A war of conquest to obtain more territory. The Saarland , which had been placed under League of Nations supervision for 15 years at the end of World War I, voted in January 1935 to become part of Germany. In March 1935, Hitler announced the creation of an air force, and that the Reichswehr would be increased to 550,000 men. Britain agreed to Germany building a naval fleet with the signing of

1274-466: The Schutzstaffel (SS) and Gestapo to purge the entire SA leadership. Hitler targeted SA Stabschef (Chief of Staff) Ernst Röhm and other SA leaders who—along with a number of Hitler's political adversaries (such as Gregor Strasser and former chancellor Kurt von Schleicher )—were arrested and shot. Up to 200 people were killed from 30 June to 2 July 1934 in an event that became known as

1365-579: The Völkisch movement . The party, especially its paramilitary organisation Sturmabteilung (SA; Storm Detachment), or Brownshirts, used physical violence to advance their political position, disrupting the meetings of rival organisations and attacking their members as well as Jewish people on the streets. Such far-right armed groups were common in Bavaria , and were tolerated by the sympathetic far-right state government of Gustav Ritter von Kahr . When

1456-541: The 6th Army could be supplied by air, but this turned out to be infeasible. Hitler's refusal to allow a retreat led to the deaths of 200,000 German and Romanian soldiers; of the 91,000 men who surrendered in the city on 31 January 1943, only 6,000 survivors returned to Germany after the war. Losses continued to mount after Stalingrad, leading to a sharp reduction in the popularity of the Nazi Party and deteriorating morale. Soviet forces continued to push westward after

1547-745: The Anglo-German Naval Agreement on 18 June 1935. When the Italian invasion of Ethiopia led to only mild protests by the British and French governments, on 7 March 1936 Hitler used the Franco-Soviet Treaty of Mutual Assistance as a pretext to order the army to march 3,000 troops into the demilitarised zone in the Rhineland in violation of the Versailles Treaty. As the territory was part of Germany,

1638-634: The Anschluss of 1938. The Munich Agreement of 1938 gave Germany control of the Sudetenland, and they seized the remainder of Czechoslovakia six months later. Under threat of invasion by sea, Lithuania surrendered the Memel district in March 1939. Between 1939 and 1941, German forces invaded Poland , Denmark , Norway , France , Luxembourg , the Netherlands , Belgium , Yugoslavia , Greece , and

1729-575: The Battle of Berlin (16 April – 2 May 1945), Hitler and his staff lived in the underground Führerbunker while the Red Army approached. On 30 April, when Soviet troops were within two blocks of the Reich Chancellery , Hitler and his wife Eva Braun committed suicide . On 2 May, General Helmuth Weidling unconditionally surrendered Berlin to Soviet General Vasily Chuikov . Hitler

1820-738: The Communist Party of Germany were arrested. On 23 March 1933, the Enabling Act , an amendment to the Weimar Constitution , passed in the Reichstag by a vote of 444 to 94. This amendment allowed Hitler and his cabinet to pass laws—even laws that violated the constitution—without the consent of the president or the Reichstag. As the bill required a two-thirds majority to pass, the Nazis used intimidation tactics as well as

1911-633: The German Empire (1871–1918) as the second. Severe setbacks to the German economy began after World War I ended, partly because of reparations payments required under the 1919 Treaty of Versailles . The government printed money to make the payments and to repay the country's war debt, but the resulting hyperinflation led to inflated prices, economic chaos, and food riots. When the government defaulted on their reparations payments in January 1923, French troops occupied German industrial areas along

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2002-565: The Hague Convention , industrial firms in the Netherlands, France, and Belgium were put to work producing war materiel for Germany. The Nazis seized from the French thousands of locomotives and rolling stock, stockpiles of weapons, and raw materials such as copper, tin, oil, and nickel. Payments for occupation costs were levied upon France, Belgium, and Norway. Barriers to trade led to hoarding, black markets , and uncertainty about

2093-511: The League of Nations in October, claiming its disarmament clauses were unfair if they applied only to Germany. In a referendum held in November , 95 per cent of voters supported Germany's withdrawal. In 1934, Hitler told his military leaders that rearmament needed to be complete by 1942, as by then the German people would require more living space and resources, so Germany would have to start

2184-791: The Low Countries . They quickly conquered Luxembourg and the Netherlands and outmanoeuvred the Allies in Belgium , forcing the evacuation of many British and French troops at Dunkirk . France fell as well, surrendering to Germany on 22 June . The victory in France resulted in an upswing in Hitler's popularity and an upsurge in war fever in Germany. In violation of the provisions of

2275-579: The Nazi euthanasia program . Political courts called Sondergerichte sentenced some 12,000 members of the German resistance to death, and civil courts sentenced an additional 40,000 Germans. Mass rapes of German women also took place. As a result of their defeat in World War I and the resulting Treaty of Versailles, Germany lost Alsace-Lorraine , Northern Schleswig , and Memel . The Saarland became

2366-722: The Night of the Long Knives . On 2 August 1934, Hindenburg died. The previous day, the cabinet had enacted the " Law Concerning the Head of State of the German Reich ", which stated that upon Hindenburg's death the office of Reich President would be abolished and its powers merged with those of Reich Chancellor. Hitler thus became head of state as well as head of government and was formally named as Führer und Reichskanzler ("Leader and Chancellor"), although eventually Reichskanzler

2457-522: The Ruhr and widespread civil unrest followed. The National Socialist German Workers' Party ( Nationalsozialistische Deutsche Arbeiterpartei ), commonly known as the Nazi Party, was founded in 1920. It was the renamed successor of the German Workers' Party (DAP) formed one year earlier, and one of several far-right political parties then active. The Nazi Party platform included destruction of

2548-512: The Soviet Union and invaded Poland on 1 September 1939, launching World War II in Europe . In alliance with Italy and other Axis powers , Germany conquered most of Europe by 1940 and threatened Great Britain. Racism , Nazi eugenics , anti-Slavism , and especially antisemitism were central ideological features of the regime. The Germanic peoples were considered by the Nazis to be

2639-562: The United States Marine Corps (USMC) to evaluate the helicopter as an airborne tug to tow disabled landing ships and amphibious landing vehicles to the beach. During the evaluation, the H-21B towed an LST at 5 kn (9.3 km/h; 5.8 mph) and a simulated tracked amphibious vehicle from the water to the beach. The uprated 1425 hp Wright engine used in the H-21B was also used in subsequent variants sold to both

2730-575: The United States Navy a series of tandem rotor helicopters, starting with the HRP-1 of 1944. The HRP-1 was nicknamed the "flying banana" because of the upward angle of the aft fuselage, which ensured that the large rotors could not strike the fuselage in any flight attitude. The name was later applied to other Piasecki helicopters of similar design, including the H-21. In 1949, Piasecki proposed

2821-470: The federal election of 1932 , the party was the largest in the Reichstag , holding 230 seats with 37.4 per cent of the popular vote. Although the Nazis won the greatest share of the popular vote in the two Reichstag general elections of 1932, they did not have a majority. Hitler refused to participate in a coalition government unless he was its leader. Under pressure from politicians, industrialists, and

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2912-723: The " master race ", the purest branch of the Aryan race. Jews , Romani people , Slavs , homosexuals , liberals , socialists , communists , other political opponents, Jehovah's Witnesses , Freemasons , those who refused to work , and other "undesirables" were imprisoned, deported , or murdered. Christian churches and citizens that opposed Hitler's rule were oppressed and leaders imprisoned. Education focused on racial biology , population policy, and fitness for military service. Career and educational opportunities for women were curtailed . Nazi Propaganda Ministry disseminated films, antisemitic canards , and organized mass rallies; fostering

3003-566: The Allied bombing campaign became even more devastating. By targeting oil refineries and factories, they crippled the German war effort by late 1944. On 6 June 1944, American, British, and Canadian forces established a front in France with the D-Day landings in Normandy . On 20 July 1944 , Hitler survived an assassination attempt. He ordered brutal reprisals, resulting in 7,000 arrests and

3094-456: The British and French governments did not feel that attempting to enforce the treaty was worth the risk of war. In the one-party election held on 29 March, the Nazis received 98.9 per cent support. In 1936, Hitler signed an Anti-Comintern Pact with Japan and a non-aggression agreement with Mussolini, who was soon referring to a "Rome-Berlin Axis". Hitler sent military supplies and assistance to

3185-665: The CH-21's unprotected control cables and fuel lines proved vulnerable to the Vietcong , which were increasingly well supplied with automatic small arms and heavy (12.7 mm) anti-aircraft machine guns. The H-21, which was designed for cold weather operations, performed poorly in the hot weather of Vietnam. Despite being capable of carrying 20 passengers, it could lift only nine when operating in Vietnam. Pilots reported that engines that were rated for 600 hours of flying time were lasting only 200 hours or less in Vietnam. The shooting down of

3276-764: The German National People's Party – their former coalition partners – which then disbanded on 29 June. The remaining major political parties followed suit. On 14 July 1933 Germany became a one-party state with the passage of the Law Against the Formation of Parties , decreeing the Nazi Party to be the sole legal party in Germany. The founding of new parties was also made illegal, and all remaining political parties which had not already been dissolved were banned. Further elections in November 1933 , 1936 , and 1938 were Nazi-controlled, with only members of

3367-594: The German state in the Nazi era are "Nazi Germany" and the "Third Reich", which Hitler and the Nazis also referred to as the "Thousand-Year Reich" ( Tausendjähriges Reich ). The latter, a translation of the Nazi propaganda term Drittes Reich , was first used in Das Dritte Reich , a 1923 book by Arthur Moeller van den Bruck . The book counted the Holy Roman Empire (962–1806) as the first Reich and

3458-679: The H-21 had been removed from ground-attack, official U.S. Army evaluations at the time indicated that the type was actually more likely to survive hits by ground fire than was the Sikorsky CH-34; this was assumed to be a consequence of the location and construction of the CH-34's fuel tanks. By the close of the Algerian War, troop-carrying H-21C helicopters were being used in concert with H-34 ground-attack helicopters in large counterinsurgency operations. The H-21C saw extensive service with

3549-716: The H-21A and H-21B were put into service by the USAF and the Royal Canadian Air Force (RCAF) to maintain and service Distant Early Warning Line (DEW) radar installations stretching from the Aleutian Islands and Alaska across the Canadian Arctic to Greenland and Iceland . In 1952, some H-21As were evaluated by USMC helicopter squadron HMX-1 for air assault. In 1957, an H-21B was loaned to

3640-410: The H-21C lacked the maneuverability and performance needed for ground-attack. The H-21C was far more successful as a troop transport, and most H-21Cs in service were eventually fitted with flexible door-mounted guns such as the .50 cal. (12.7 mm) M2 Browning machine gun or the (ex- German ) MG 151/20 20 mm aircraft autocannon, for defensive use when landing assault forces under fire. Though

3731-445: The Nationalist forces of General Francisco Franco in the Spanish Civil War , which began in July 1936. The German Condor Legion included a range of aircraft and their crews, as well as a tank contingent. The aircraft of the Legion destroyed the city of Guernica in 1937. The Nationalists were victorious in 1939 and became an informal ally of Nazi Germany. In February 1938, Hitler emphasised to Austrian Chancellor Kurt Schuschnigg

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3822-408: The Nazi claim that Nazi Germany was the successor to the earlier Holy Roman Empire (800/962–1806) and German Empire (1871–1918). The Third Reich, which the Nazis referred to as the Thousand-Year Reich , ended in May 1945, after only 12 years, when the Allies defeated Germany and entered the capital, Berlin , ending World War II in Europe . After Hitler was appointed Chancellor of Germany by

3913-421: The Party and a small number of independents elected. All civilian organisations had their leadership replaced with Nazi sympathisers or party members, and either merged with the Nazi Party or faced dissolution. The Nazi government declared a "Day of National Labor" for May Day 1933, and invited many trade union delegates to Berlin for celebrations. The day after, SA stormtroopers demolished union offices around

4004-403: The Polish Corridor but greatly expanding German territory eastward at the expense of Poland. He expected this time they would be met by force. The Germans reaffirmed their alliance with Italy and signed non-aggression pacts with Denmark, Estonia, and Latvia whilst trade links were formalised with Romania, Norway, and Sweden. Foreign Minister Joachim von Ribbentrop arranged in negotiations with

4095-411: The President of the Weimar Republic Paul von Hindenburg on 30 January 1933, the Nazi Party began to eliminate political opposition and consolidate power. Hindenburg died on 2 August 1934, and Hitler became dictator by merging the powers of the chancellery and presidency. A 1934 German referendum confirmed Hitler as sole Führer (leader). Power was centralised in Hitler's person, and his word became

4186-402: The RAF in what became known as the Battle of Britain , and by the end of October, Hitler realised that air superiority would not be achieved. He permanently postponed the invasion, a plan which the commanders of the German army had never taken entirely seriously. Several historians, including Andrew Gordon , believe the primary reason for the failure of the invasion plan was the superiority of

4277-456: The Royal Navy, not the actions of the RAF. In February 1941, the German Afrika Korps arrived in Libya to aid the Italians in the North African Campaign . On 6 April, Germany launched an invasion of Yugoslavia and Greece . All of Yugoslavia and parts of Greece were subsequently divided between Germany, Hungary, Italy, and Bulgaria. On 22 June 1941, contravening the Molotov–Ribbentrop Pact, about 3.8 million Axis troops attacked

4368-493: The Soviet Union a non-aggression pact, the Molotov–Ribbentrop Pact , signed in August 1939. The treaty also contained secret protocols dividing Poland and the Baltic states into German and Soviet spheres of influence. Germany's wartime foreign policy involved the creation of allied governments controlled directly or indirectly from Berlin. They intended to obtain soldiers from allies such as Italy and Hungary and workers and food supplies from allies such as Vichy France . Hungary

4459-506: The Soviet Union attacked from the east on 17 September. Reinhard Heydrich , chief of the Sicherheitspolizei (SiPo; Security Police) and Sicherheitsdienst (SD; Security Service), ordered on 21 September that Polish Jews should be rounded up and concentrated into cities with good rail links. Initially the intention was to deport them further east, or possibly to Madagascar . Using lists prepared in advance , some 65,000 Polish intelligentsia, noblemen, clergy, and teachers were murdered by

4550-441: The Soviet Union in 1941, Nazi Germany attempted to implement the Generalplan Ost and Hunger Plan , as part of its war of extermination in Eastern Europe. The Soviet resurgence and entry of the US into the war meant Germany lost the initiative in 1943 and by late 1944 had been pushed back to the 1939 border. Large-scale aerial bombing of Germany escalated and the Axis powers were driven back in Eastern and Southern Europe. Germany

4641-443: The Soviet Union. In addition to Hitler's stated purpose of acquiring Lebensraum , this large-scale offensive—codenamed Operation Barbarossa —was intended to destroy the Soviet Union and seize its natural resources for subsequent aggression against the Western powers. The reaction among Germans was one of surprise and trepidation as many were concerned about how much longer the war would continue or suspected that Germany could not win

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4732-443: The U.S. Army (as the H-21C Shawnee ) and the military forces of several other nations. In 1962, the H-21 was renamed the CH-21 in U.S. Army service. In 1959 Vertol Aircraft, the new name for Piasecki Helicopters, came up with a concept for heavy lift over short distances where between two and six H-21Bs would be linked by beams to lift heavy loads. It was considered to be unsafe, because if one helicopter had mechanical problems during

4823-410: The U.S. Army and Air Force. Data from U.S. Army Aircraft Since 1947 General characteristics Performance Armament Related development Aircraft of comparable role, configuration, and era Related lists Tandem rotor Single-rotor helicopters need a mechanism to neutralize the yawing movement produced by the single large rotor. This is commonly accomplished by

4914-458: The U.S. Army, primarily for use in transporting troops and supplies. On 24 August 1954, with the assistance of inflight refueling provided by a U.S. Army U-1A Otter , a H-21C known as Amblin' Annie became the first helicopter to cross the United States non-stop. Experiments were made by the Army in arming the H-21C as a gunship; some Shawnees were armed with flex guns under the nose, while others were fitted with door guns. One experimental version

5005-419: The United States. Food was in short supply in the conquered areas of the Soviet Union and Poland, as the retreating armies had burned the crops in some areas, and much of the remainder was sent back to the Reich. In Germany, rations were cut in 1942. In his role as Plenipotentiary of the Four Year Plan , Hermann Göring demanded increased shipments of grain from France and fish from Norway. The 1942 harvest

5096-444: The Weimar Republic, rejection of the Treaty of Versailles, radical antisemitism , and anti- Bolshevism . They promised a strong central government, increased Lebensraum ("living space") for Germanic peoples, formation of a national community based on race, and racial cleansing via the active suppression of Jews , who would be stripped of their citizenship and civil rights. The Nazis proposed national and cultural renewal based upon

5187-445: The YH-21 Workhorse , which was an improved, all-metal derivative of the HRP-1, to the United States Air Force (USAF). Using two tandem, fully articulated three-bladed counter-rotating rotors, the H-21 was powered by one nine-cylinder Curtis-Wright R-1820-103 Cyclone supercharged 1,150 hp (858 kW) air-cooled radial engine . After the first flight of the YH-21 on 11 April 1952, the USAF ordered 32 H-21A SAR models and 163 of

5278-463: The aerodynamic shadow of the front rotor, which reduces its efficiency. This loss can be minimized by increasing the distance between the two rotor hubs, and by elevating one hub over the other. Tandem-rotor helicopters tend to have a lower disk loading than single-rotor helicopters. Tandem-rotor helicopters typically require less power to hover and achieve low-speed flight as compared to single-rotor helicopters. Both configurations typically require

5369-451: The blockade, imports into Germany declined by 80 per cent. To safeguard Swedish iron ore shipments to Germany, Hitler ordered the invasion of Denmark and Norway , which began on 9 April. Denmark fell after less than a day , while most of Norway followed by the end of the month. By early June, Germany occupied all of Norway . Against the advice of many of his senior military officers, in May 1940 Hitler ordered an attack on France and

5460-400: The business community, President Paul von Hindenburg appointed Hitler as Chancellor of Germany on 30 January 1933. This event is known as the Machtergreifung ("seizure of power"). On the night of 27 February 1933, the Reichstag building was set afire . Marinus van der Lubbe , a Dutch communist, was found guilty of starting the blaze. Hitler proclaimed that the arson marked the start of

5551-445: The churches. The Nazi regime abolished the symbols of the Weimar Republic—including the black, red, and gold tricolour flag —and adopted reworked symbolism. The previous imperial black, white, and red tricolour was restored as one of Germany's two official flags; the second was the swastika flag of the Nazi Party, which became the sole national flag in September 1935. The Party anthem " Horst-Wessel-Lied " ("Horst Wessel Song") became

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5642-411: The country; all trade unions were forced to dissolve and their leaders were arrested. The Law for the Restoration of the Professional Civil Service , passed in April, removed from their jobs all teachers, professors, judges, magistrates, and government officials who were Jewish or whose commitment to the party was suspect. This meant the only non-political institutions not under control of the Nazis were

5733-510: The electorate in a plebiscite . Most Germans were relieved that the conflicts and street fighting of the Weimar era had ended. They were deluged with propaganda orchestrated by Minister of Public Enlightenment and Propaganda Joseph Goebbels , who promised peace and plenty for all in a united, Marxist-free country without the constraints of the Versailles Treaty. The Nazi Party obtained and legitimised power through its initial revolutionary activities, then through manipulation of legal mechanisms,

5824-471: The end of 1939 in an attempt to destroy Poland's identity as a nation. Soviet forces advanced into Finland in the Winter War , and German forces saw action at sea. But little other activity occurred until May, so the period became known as the " Phoney War ". From the start of the war, a British blockade on shipments to Germany affected its economy. Germany was particularly dependent on foreign supplies of oil, coal, and grain. Thanks to trade embargoes and

5915-488: The establishment of the Nuremberg Laws of 1935, which stripped them of their basic rights. The Nazis would take from the Jews their wealth, their right to intermarry with non-Jews, and their right to occupy many fields of labour (such as law, medicine, or education). Eventually the Nazis declared the Jews as undesirable to remain among German citizens and society. As early as February 1933, Hitler announced that rearmament must begin, albeit clandestinely at first, as to do so

6006-473: The execution of more than 4,900 people. The failed Ardennes Offensive (16 December 1944 – 25 January 1945) was the last major German offensive on the western front, and Soviet forces entered Germany on 27 January. Hitler's refusal to admit defeat and his insistence that the war be fought to the last man led to unnecessary death and destruction in the war's closing months. Through his Justice Minister Otto Georg Thierack , Hitler ordered that anyone who

6097-859: The failed German offensive at the Battle of Kursk in the summer of 1943. By the end of 1943, the Germans had lost most of their eastern territorial gains. In Egypt, Field Marshal Erwin Rommel 's Afrika Korps were defeated by British forces under Field Marshal Bernard Montgomery in October 1942. The Allies landed in Sicily in July 1943 and were on the Italian peninsula by September. Meanwhile, American and British bomber fleets based in Britain began operations against Germany . Many sorties were intentionally given civilian targets in an effort to destroy German morale. The bombing of aircraft factories as well as Peenemünde Army Research Center , where V-1 and V-2 rockets were being developed and produced, were also deemed particularly important. German aircraft production could not keep pace with losses, and without air cover

6188-617: The future. Food supplies were precarious; production dropped in most of Europe. Famine was experienced in many occupied countries. Hitler's peace overtures to the new British Prime Minister Winston Churchill were rejected in July 1940. Grand Admiral Erich Raeder had advised Hitler in June that air superiority was a pre-condition for a successful invasion of Britain , so Hitler ordered a series of aerial attacks on Royal Air Force (RAF) airbases and radar stations, as well as nightly air raids on British cities, including London , Plymouth , and Coventry . The German Luftwaffe failed to defeat

6279-403: The helicopter in opposite directions. To achieve pitch , opposite collective is applied to each rotor; decreasing the lift produced at one end, while increasing lift at the opposite end, effectively tilting the helicopter forward or back. Tandem-rotor helicopters have the advantage of being able to hold more weight with shorter blades, since there are two sets. However, the rear rotor works in

6370-403: The highest law. The government was not a coordinated, cooperating body, but rather a collection of factions struggling to amass power. In the midst of the Great Depression , the Nazis restored economic stability and ended mass unemployment using heavy military spending. Financed by deficit spending , the regime undertook extensive public works projects, including the Autobahnen (motorways) and

6461-583: The lift it could unbalance the structure and cause all helicopters to crash. In 1956, seeking a way to use helicopters for ground-attack in the Algerian War , the French Air Force and French Army Aviation ( Aviation Légère de l'Armée de Terre ) experimented with arming the Sikorsky S-55 , then being superseded in service by the more capable Piasecki H-21 and Sikorsky H-34 helicopters. Some French Air Force and Army aviation H-21C helicopters were subsequently armed with fixed, forward-firing rockets and machine guns. A few even had racks for bombs but tests found that

6552-553: The more powerful H-21B assault transport variant. The H-21B was equipped with an uprated version of the Wright 103 engine, developing 1,425 shaft horsepower (1,063 kW) and featured rotor blades extended by 6 inches (152 mm). With its improved capabilities, the H-21B could carry 22 fully equipped infantrymen or 12 stretchers, plus space for two medical attendants, as a medevac helicopter. With its Arctic winter capabilities,

6643-478: The need for Germany to secure its frontiers. Schuschnigg scheduled a plebiscite regarding Austrian independence for 13 March, but Hitler sent an ultimatum to Schuschnigg on 11 March demanding that he hand over all power to the Austrian Nazi Party or face an invasion. German troops entered Austria the next day, to be greeted with enthusiasm by the populace. The Republic of Czechoslovakia was home to

6734-497: The plan, as Germany was not yet ready for war. The crisis led to war preparations by Britain, Czechoslovakia, and France (Czechoslovakia's ally). Attempting to avoid war, British Prime Minister Neville Chamberlain arranged a series of meetings, the result of which was the Munich Agreement , signed on 29 September 1938. The Czechoslovak government was forced to accept the Sudetenland's annexation into Germany. Chamberlain

6825-606: The provisions of the Reichstag Fire Decree to keep several Social Democratic deputies from attending, and the Communists had already been banned. The Enabling Act would subsequently serve as the legal foundation for the dictatorship the Nazis established. On 10 May, the government seized the assets of the Social Democrats, and they were banned on 22 June. On 21 June, the SA raided the offices of

6916-593: The same power to achieve high-speed flight. Nazi Germany Nazi Germany , officially known as the German Reich and later the Greater German Reich , was the German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a totalitarian dictatorship . The Third Reich , meaning "Third Realm" or "Third Empire", referred to

7007-523: The stock market in the United States crashed in 1929 , the effect in Germany was dire. Millions were thrown out of work and several major banks collapsed. Hitler and the Nazis prepared to take advantage of the emergency to gain support for their party. They promised to strengthen the economy and provide jobs. Many voters decided the Nazi Party was capable of restoring order, quelling civil unrest, and improving Germany's international reputation. After

7098-529: The total German war dead range from 5.5 to 6.9 million persons. A study by German historian Rüdiger Overmans puts the number of German military dead and missing at 5.3 million, including 900,000 men conscripted from outside of Germany's 1937 borders. Richard Overy estimated in 2014 that about 353,000 civilians were killed in Allied air raids. Other civilian deaths include 300,000 Germans (including Jews) who were victims of Nazi political, racial, and religious persecution and 200,000 who were murdered in

7189-473: The use of police powers, and by taking control of the state and federal institutions. The first major Nazi concentration camp , initially for political prisoners, was opened at Dachau in 1933. Hundreds of camps of varying size and function were created by the end of the war. Beginning in April 1933, scores of measures defining the status of Jews and their rights were instituted. These measures culminated in

7280-494: The war drew to a close. Suicide rates in Germany increased, particularly in areas where the Red Army was advancing. Among soldiers and party personnel, suicide was often deemed an honourable and heroic alternative to surrender. First-hand accounts and propaganda about the uncivilised behaviour of the advancing Soviet troops caused panic among civilians on the Eastern Front, especially women, who feared being raped. More than

7371-494: Was a powerful ally, the relationship was distant, with little co-ordination or co-operation. For example, Germany refused to share their formula for synthetic oil from coal until late in the war. Germany invaded Poland and captured the Free City of Danzig on 1 September 1939, beginning World War II in Europe. Honouring their treaty obligations, Britain and France declared war on Germany two days later. Poland fell quickly, as

7462-535: Was built by Nicolas Florine in 1927. Advantages of the tandem rotor system are a larger center of gravity range and good longitudinal stability . Disadvantages of the tandem rotor system are a complex transmission and the need for two large rotors. The two rotors are linked by a transmission that ensures the rotors are synchronized and do not hit each other, even during an engine failure. Tandem-rotor designs achieve yaw by applying opposite left and right cyclic to each rotor, effectively pulling both ends of

7553-562: Was conquered by the Soviet Union from the east and the other Allies from the west, and capitulated on 8 May 1945. Hitler's refusal to admit defeat led to massive destruction of German infrastructure and additional war-related deaths in the closing months of the war. The Allies initiated a policy of denazification and put many of the surviving Nazi leadership on trial for war crimes at the Nuremberg trials . Common English terms for

7644-417: Was dropped. Germany was now a totalitarian state with Hitler at its head. As head of state, Hitler became Supreme Commander of the armed forces. The new law provided an altered loyalty oath for servicemen so that they affirmed loyalty to Hitler personally rather than the office of supreme commander or the state. On 19 August, the merger of the presidency with the chancellorship was approved by 90 per cent of

7735-692: Was good, and food supplies remained adequate in Western Europe. Germany and Europe as a whole were almost totally dependent on foreign oil imports. In an attempt to resolve the shortage, in June 1942 Germany launched Fall Blau ("Case Blue"), an offensive against the Caucasian oilfields. The Red Army launched a counter-offensive on 19 November and encircled the Axis forces, who were trapped in Stalingrad on 23 November. Göring assured Hitler that

7826-526: Was greeted with cheers when he landed in London, saying the agreement brought "peace for our time". Austrian and Czech foreign exchange reserves were seized by the Nazis, as were stockpiles of raw materials such as metals and completed goods such as weaponry and aircraft, which were shipped to Germany. The Reichswerke Hermann Göring industrial conglomerate took control of steel and coal production facilities in both countries. In January 1934, Germany signed

7917-497: Was in violation of the Versailles Treaty. On 17 May 1933, Hitler gave a speech before the Reichstag outlining his desire for world peace and accepted an offer from American President Franklin D. Roosevelt for military disarmament, provided the other nations of Europe did the same. When the other European powers failed to accept this offer, Hitler pulled Germany out of the World Disarmament Conference and

8008-432: Was not prepared to fight should be court-martialed, and thousands of people were executed. In many areas, people surrendered to the approaching Allies in spite of exhortations of local leaders to continue to fight. Hitler ordered the destruction of transport, bridges, industries, and other infrastructure—a scorched earth decree—but Armaments Minister Albert Speer prevented this order from being fully carried out. During

8099-489: Was succeeded by Grand Admiral Karl Dönitz as Reich President and Goebbels as Reich Chancellor. Goebbels and his wife Magda committed suicide the next day after murdering their six children . Between 4 and 8 May 1945, most of the remaining German armed forces unconditionally surrendered. The German Instrument of Surrender was signed 8 May, marking the end of the Nazi regime and the end of World War II in Europe . Popular support for Hitler almost completely disappeared as

8190-608: Was tested with a Boeing B-29 Superfortress .50 cal. remote turret mounted beneath the nose. The H-21C (later designated CH-21C) was first deployed to South Vietnam in December 1961 with the Army's 8th and 57th Transportation Companies, in support of Army of the Republic of Vietnam troops. In Army service, the CH-21C Shawnee could be armed with 7.62 mm (.308 in) or 12.7 mm (.50 in) flexible door guns. Relatively slow,

8281-682: Was the fourth nation to join the Axis, signing the Tripartite Pact on 27 September 1940. Bulgaria signed the pact on 17 November. German efforts to secure oil included negotiating a supply from their new ally, Romania , who signed the Pact on 23 November, alongside the Slovak Republic. By late 1942, there were 24 divisions from Romania on the Eastern Front, 10 from Italy, and 10 from Hungary. Germany assumed full control in France in 1942, Italy in 1943, and Hungary in 1944. Although Japan

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