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M40 recoilless rifle

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The M40 recoilless rifle is a portable, crew-served 105 mm recoilless rifle made in the United States . Intended primarily as an anti-tank weapon , it could also be employed in an antipersonnel role with the use of an antipersonnel-tracer flechette round . The bore was commonly described as being 106 mm caliber but is in fact 105 mm; the 106 mm designation was intended to prevent confusion with incompatible 105 mm ammunition from the failed M27. The air-cooled, breech-loaded , single-shot rifle fired fixed ammunition and was used primarily from a wheeled ground mount or M92 ground mount. It was designed for direct firing only, and sighting equipment for this purpose was furnished with each weapon, including an affixed M8C .50 cal spotting rifle .

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107-535: 297 M50 "Ontos" were built as self-propelled light armored tracked anti-tank vehicles. They had six 105 mm M40 recoilless rifles as their main armament, which could be fired in rapid succession against a single target to guarantee a kill. The M40 could also be used on the M274 4×4 utility platform "mechanical mule." Replacing the M27 recoilless rifle , the M40 primarily saw action during

214-506: A province . Taipei became the permanent capital in 1893. Liu's efforts to increase revenues on Taiwan's produce were hampered by foreign pressure not to increase levies. A land reform was implemented, increasing revenue which still fell short of expectation. Modern technologies such as electric lighting, a railway, telegraph lines, steamship service, and industrial machinery were introduced under Liu's governance, but several of these projects had mixed results. A campaign to formally subjugate

321-651: A Japanese expedition was sent to survey Taiwan. After being attacked by the Indigenous people, they took some prisoners and returned home. In 1616, a Japanese fleet of 13 ships were sent to Taiwan. Due to a storm, only one ship made it there and is presumed to have returned to Japan. In 1624, the Dutch East India Company (VOC) established Fort Zeelandia on the coastal islet of Tayouan (in modern Tainan ). The lowland areas were occupied by 11 Indigenous chiefdoms , some of which fell under Dutch control, including

428-489: A Republic, and to distribute land equally among the people." Revolutionary leader Sun Yat-sen proposed the name Chunghwa Minkuo as the assumed name of the new country when the revolution succeeded. During the 1950s and 1960s, after the ROC government had withdrawn to Taiwan, it was commonly referred to as "Nationalist China" (or " Free China ") to differentiate it from "communist China" (or " Red China "). Over subsequent decades,

535-513: A democracy. Chiang Ching-kuo , Chiang Kai-shek's son, served as premier from 1972 and rose to the presidency in 1978. He sought to move more authority to " bensheng ren " (residents of Taiwan before Japan's surrender and their descendants). Pro-democracy activists Tangwai emerged as the opposition. In 1979, the Kaohsiung Incident took place in Kaohsiung on Human Rights Day . Although

642-552: A few were kept in service with safety barriers to protect the gunners, who fired the guns remotely. In December 2002, two M40s at Mammoth Mountain were destroyed by catastrophic bore explosions 13 days apart. The gunners were uninjured, having been protected by the safety barriers, but the incidents prompted the USFS to retire all remaining M40s in July 2003. Also in the mid-1990s, Parks Canada acquired four M40s for avalanche control to replace

749-632: A good proportion of islanders and re-privatizing businesses. After the end of World War II, the Chinese Civil War resumed. A series of Chinese Communist offensives in 1949 led to the capture of its capital Nanjing on 23 April and the subsequent defeat of the Nationalists on the mainland. The Communists founded the People's Republic of China on 1 October. On 7 December 1949, Chiang Kai-Shek evacuated his Nationalist government to Taiwan and made Taipei

856-888: A locking wheel, when the wheel is down, the rifle is locked in traverse, and can only be moved right and left with the traverse wheel. When the wheel is raised, the rifle can be traversed by hand. Austria produced a two-wheeled mount for the M40. The whole mounting can be placed on an M151 Jeep for mobile use. It has also been mounted on M113s , UMM 4x4s , Jongas , Fath Safirs , Land Rover Defenders , Mercedes-Benz G-Wagen , Hotchkiss M201 jeeps, Toyota Land Cruisers , Jeep CJs , Willys M38s , HMMWVs , M274 Mechanical Mules , Tiuna 106 mm weapons platforms , JODDB (formerly King Abdullah II Design and Development Bureau) Al Jawad vehicles, RBY MK 1s , AIL Abirs and AIL Storms . They were also used on US Navy minesweepers (MSO) during Operation Market Time in Vietnam. A special vehicle called

963-925: A name for the island, or the part of it closest to Penghu . Elsewhere, the name was used for the Ryukyu Islands in general or Okinawa specifically; the name Ryūkyū is the Japanese form of Liúqiú . The name also appears in the Book of Sui (636) and other early works, but scholars cannot agree on whether these references are to the Ryukyus, Taiwan or even Luzon . The name Formosa ( 福爾摩沙 ) dates from 1542, when Portuguese sailors noted it on their maps as Ilha Formosa ( Portuguese for " beautiful island "). The name Formosa eventually "replaced all others in European literature" and remained in common use among English speakers into

1070-491: A number of design and engineering meetings from March through October 1951, manufacturer Allis-Chalmers was awarded an initial contract to produce 14 pilot vehicles, encompassing 6 variants. Allis-Chalmers' first vehicle, completed in 1952, was based on the running gear of the M56 Scorpion light anti-tank vehicle. The vehicle mounted a cast steel turret with two arms holding three rifles each. This early model could traverse

1177-549: A pontoon bridge. In the Battle of Huế , Colonel Stanley S. Hughes felt the Ontos was the most effective of all Marine supporting arms. At ranges of 300 to 500 yards (270 to 460 m), its recoilless rifles could knock holes in or completely knock down walls. The appearance of an Ontos was sometimes enough to make the enemy break and run, and anecdotal accounts describe the enemy fleeing occupied buildings when an Ontos's spotting round entered

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1284-401: A puff of smoke on impact with the target. On the left side, there is an elevating wheel, in the center of which is the trigger wheel used to fine adjust the elevation and at the same time firing the spotting rifle when pulled, and the gun when pushed. The mounting is a tripod , but the front leg has a castering wheel. On top of the mount is a traverse wheel. On the center of the traverse wheel is

1391-559: A purely tactical reason—to conceal the vulnerable M40 and its crew from the enemy until the main rifle was ready to fire. However, this restriction is believed to be the source of a long-standing misconception that the laws of war restrict the use of .50-caliber projectiles against enemy personnel more generally. In the early 1990s, the United States Forest Service (USFS) introduced the M40 for avalanche control as ammunition stocks for its M27 rifles became depleted. The M40

1498-513: A rebellion" (三年一反、五年一亂), primarily in reference to the period between 1820 and 1850. Many officials stationed in Taiwan called for an active colonization policy over the 19th century. In 1788, Taiwan Prefect Yang Tingli supported the efforts of a settler named Wu Sha to claim land held by the Kavalan people . In 1797, Wu Sha was able to recruit settlers with financial support from the local government but

1605-573: A surplus of $ 46.5 million. Along with Hong Kong, Singapore, and South Korea, Taiwan became known as one of the Four Asian Tigers . Because of the Cold War, most Western nations and the United Nations regarded the ROC as the sole legitimate government of China until the 1970s. Eventually, especially after Taiwan's expulsion from the United Nations , most nations switched diplomatic recognition to

1712-534: A tracer round with the same trajectory as the 105 mm round, and which gave off a flash and puff of white smoke on impact. The spotting rifles were used to line up the 105 mm recoilless rifles with the target. The Ontos also carried a single .30 caliber (7.62 mm) M1919A4 machine gun for anti-infantry use. The vehicle was taken to the Aberdeen Proving Ground where single rifles had been tested earlier. When all six weapons were fired at once,

1819-507: A two-year grace period, which few saw as feasible. Estimates say around 4,000 to 6,000 departed before the expiration of the grace period, and 200,000 to 300,000 followed during the subsequent disorder. On 25 May 1895, a group of pro-Qing high officials proclaimed the Republic of Formosa to resist impending Japanese rule. Japanese forces entered the capital at Tainan and quelled this resistance on 21 October 1895. About 6,000 inhabitants died in

1926-458: A window. In Operation Desoto , the introduction of the large CH-53 Sea Stallion helicopter made possible moving a platoon 25 miles (40 km) south of Quảng Ngãi City carrying Ontos in slings underneath the aircraft. The Ontos was taken out of service in 1969, and by 1970 were removed entirely from service. Some of the vehicles were handed over to an Army light infantry brigade. They used them until they ran out of spare parts, and then removed

2033-583: Is a developed country . It is ranked highly in terms of civil liberties , healthcare , and human development . The political status of Taiwan is contentious. Despite being a founding member, the ROC no longer represents China as a member of the United Nations after UN members voted in 1971 to recognize the PRC instead. The ROC maintained its claim of being the sole legitimate representative of China and its territory until 1991, when it ceased to regard

2140-625: Is a country in East Asia . The main island of Taiwan , also known as Formosa , lies between the East and South China Seas in the northwestern Pacific Ocean , with the People's Republic of China (PRC) to the northwest, Japan to the northeast, and the Philippines to the south. It has an area of 35,808 square kilometres (13,826 square miles), with mountain ranges dominating the eastern two-thirds and plains in

2247-505: Is the "Republic of China". Shortly after the ROC's establishment in 1912, while it was still located on the Chinese mainland, the government used the short form "China" ( Zhōngguó , 中國 ) to refer to itself, derived from zhōng ("central" or "middle") and guó ("state, nation-state"). The term developed under the Zhou dynasty in reference to its royal demesne , and was then applied to

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2354-836: The Canadian Armed Forces using 105 mm towed howitzers in Rogers Pass (British Columbia) on the Trans-Canada Highway. Special pedestals were built at specific locations and a pneumatic remote firing system was devised to allow the operators to fire the recoilless rifle safely in case of ammunition malfunction. After a trial period, the M40s plan was abandoned and the Canadian Armed Forces once again began providing 105 mm towed howitzers and artillery personnel to conduct avalanche control. M50 Ontos Ontos , officially

2461-538: The Dominican Civil War : on 29 April 1965 an M50 Ontos and an M48 Patton of the 6th MEU engaged and destroyed two rebel L/60L light tanks, each destroying one. In another instance, an Ontos destroyed an AMX-13 . Of the 297 built, only 14 remain, many of which are the M50A1 model. There are Ontos on display at the following US locations: Taiwan Taiwan , officially the Republic of China ( ROC ),

2568-477: The Formosa Air Battle was fought between American carriers and Japanese forces in Taiwan. Over 200,000 of Taiwanese served in the Japanese military , with over 30,000 casualties. Over 2,000 women, euphemistically called " comfort women ", were forced into sexual slavery for Imperial Japanese troops. After Japan's surrender , most Japanese residents were expelled . While Taiwan was under Japanese rule,

2675-573: The Kingdom of Middag . When the Dutch arrived, southwestern Taiwan was already frequented by a mostly transient Chinese population numbering close to 1,500. The VOC encouraged Chinese farmers to immigrate and work the lands under Dutch control and by the 1660s, some 30,000 to 50,000 Chinese were living on the island. Most of the farmers cultivated rice for local consumption and sugar for export while some immigrants engaged in deer hunting for export. In 1626,

2782-780: The Ontos carried six M40s. A version specific to the T195E5 mount, the M40A1C, was used. It was used only by the U.S. Marine Corps . Some Pakistani M113s have a dual mounting. Three Panagopoulos coastal patrol boats class of the Hellenic Coast Guard and the Hellenic Navy in service of 1976-2003 was armed with two sextuples M40. The M40 was a very successful export item and continues to be used by South Korea , Ecuador , Estonia , Greece , Honduras , Iran , Lebanon , Malaysia , Mexico , Morocco ,

2889-427: The Philippines were launched from Taiwan. The Imperial Japanese Navy operated heavily from Taiwanese ports, and its think tank " South Strike Group " was based at Taihoku Imperial University . Military bases and industrial centers, such as Kaohsiung and Keelung , became targets of heavy Allied bombings , which destroyed many of the factories, dams, and transport facilities built by the Japanese. In October 1944,

2996-506: The Philippines , Taiwan , Turkey , Colombia , Venezuela and many others, as well as anti-government forces in the Libyan Civil War and Syrian civil war . Ammunition for the 105 mm rifle was issued as one-piece fixed cartridges. The term "fixed" means that the projectile and the cartridge case are crimped together. This ensures correct alignment of the projectile and the cartridge case . It also permits faster loading because

3103-564: The Plains Indigenous peoples rarely rebelled against the government and the mountain Indigenous peoples were left to their own devices until the last 20 years of Qing rule. Most of the more than 100 rebellions during the Qing period, such as the Lin Shuangwen rebellion , were caused by Han settlers. Their frequency was evoked by the common saying "every three years an uprising, every five years

3210-644: The Republic of China was founded on mainland China on 1 January 1912 following the Xinhai Revolution of 1911. Central authority waxed and waned in response to warlordism (1915–28), Japanese invasion (1937–45), and the Chinese Civil War (1927–49), with central authority strongest during the Nanjing decade (1927–37), when most of China came under the control of the Kuomintang (KMT). During World War II ,

3317-496: The Rifle, Multiple 106 mm, Self-propelled, M50 , was an American light armored tracked anti-tank vehicle developed in the 1950s. It mounted six 106 mm manually loaded M40 recoilless rifles as its main armament, which could be fired in rapid succession against single targets to increase the probability of a kill. Although the actual caliber of the main guns was 105 mm, it was designated 106 mm to prevent confusion with

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3424-606: The Ryukyu Islands 30,000 years ago. Slash-and-burn agriculture practices started at least 11,000 years ago. Stone tools of the Changbin culture have been found in Taitung and Eluanbi . Archaeological remains suggest they were initially hunter-gatherers that slowly shifted to intensive fishing. The distinct Wangxing culture , found in Miaoli County , were initially gatherers who shifted to hunting. Around 6,000 years ago, Taiwan

3531-573: The Spanish Empire occupied northern Taiwan as a trading base, first at Keelung and in 1628 building Fort Santo Domingo at Tamsui . This colony lasted until 1642, when the last Spanish fortress fell to Dutch forces. The Dutch then marched south, subduing hundreds of villages in the western plains. Following the fall of the Ming dynasty in Beijing in 1644, Koxinga (Zheng Chenggong) pledged allegiance to

3638-531: The Taiwan Area , and Taiwan underwent a process of localization in which Taiwanese culture and history were promoted over a pan-China viewpoint while assimilationist policies were replaced with support for multiculturalism . In 1996, Lee was re-elected in the first direct presidential election . During Lee's administration, both he and his party were involved in corruption controversies that came to be known as " black gold " politics. Chen Shui-bian of

3745-779: The Vietnam War and was widely used during various conflicts thereafter in Africa or in the Middle East. It was replaced by the BGM-71 TOW anti-tank missile system in the US Armed Forces. The earlier M27 recoilless rifle was a 105 mm weapon developed in the early 1950s and fielded in the Korean War . Although a recoilless rifle of this caliber had been a concept since the Second World War ,

3852-535: The White Terror , as the period is known, 140,000 people were imprisoned or executed for being perceived as anti-KMT or pro-Communist. Many citizens were arrested, tortured, imprisoned or executed for their real or perceived link to the Chinese Communist Party. Since these people were mainly from the intellectual and social elite, an entire generation of political and social leaders was destroyed. Following

3959-543: The Yongli Emperor and attacked the Qing dynasty along the southeastern coast of China. In 1661, under increasing Qing pressure, he moved his forces from his base in Xiamen to Taiwan, expelling the Dutch the following year. The Dutch retook the northern fortress at Keelung in 1664, but left the island in 1668 in the face of indigenous resistance. The Zheng regime, known as the Kingdom of Tungning , proclaimed its loyalty to

4066-472: The Zhu Yigui settler rebellion in 1722, separation of aboriginals and settlers became official policy via 54 stelae used to mark the frontier boundary. The markings were changed four times over the latter half of the 18th century due to continued settler encroachment. Two aboriginal affairs sub-prefects, one for the north and one for the south, were appointed in 1766. During the 200 years of Qing rule in Taiwan,

4173-451: The temporary capital of the ROC. Some 2 million people, mainly soldiers, members of the ruling Kuomintang and intellectual and business elites, were evacuated to Taiwan, adding to the earlier population of approximately six million. These people and their descendants became known in Taiwan as " waisheng ren " ( 外省人 ). The ROC government took to Taipei many national treasures and much of China's gold and foreign currency reserves. Most of

4280-423: The " Taiwan Miracle ". In the late 1980s and early 1990s, the ROC transitioned from a one-party state under martial law to a multi-party democracy , with democratically elected presidents beginning in 1996 . Taiwan's export-oriented economy is the 21st-largest in the world by nominal GDP and the 20th-largest by PPP measures, with a focus on steel, machinery, electronics, and chemicals manufacturing. Taiwan

4387-554: The 1943 Cairo Declaration specified that Formosa and the Pescadores be returned by Japan to the ROC; the terms were later repeated in the 1945 Potsdam Declaration that Japan agreed to carry out in its instrument of surrender . On 25 October 1945 , Japan surrendered Taiwan to the ROC, and in the Treaty of San Francisco , Japan formally renounced their claims to the islands, though without specifying to whom they were surrendered. In

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4494-540: The 1950s and were defeated by Communists in 1961 . Since losing control of mainland China, the Kuomintang continued to claim sovereignty over 'all of China', which it defined to include mainland China (including Tibet), Taiwan (including Penghu), Outer Mongolia , and other minor territories . Martial law , declared on Taiwan in May 1949, continued to be in effect until 1987, and was used to suppress political opposition. During

4601-401: The 20th century. In 1603, a Chinese expedition fleet anchored at a place in Taiwan called Dayuan, a variant of "Taiwan". In the early 17th century, the Dutch East India Company established a commercial post at Fort Zeelandia (modern-day Anping ) on a coastal sandbar called "Tayouan", after their ethnonym for a nearby Taiwanese aboriginal tribe, possibly Taivoan people . This name

4708-565: The Chinese Communist Party as a rebellious group and acknowledged its control over mainland China. Taiwan is claimed by the PRC, which refuses to establish diplomatic relations with countries that recognise the ROC. Taiwan maintains official diplomatic relations with 11 out of 193 UN member states and the Holy See . Many others maintain unofficial diplomatic ties through representative offices and institutions that function as de facto embassies and consulates . International organizations in which

4815-735: The DPP was elected as the first non-KMT president in 2000 . However, Chen lacked legislative majority. The opposition KMT developed the Pan-Blue Coalition with other parties, mustering a slim majority over the DPP-led Pan-Green Coalition . Polarized politics emerged in Taiwan with the Pan-Blue preference for eventual Chinese unification , while the Pan-Green prefers Taiwanese independence . Chen's reference to " One Country on Each Side " of

4922-492: The Indigenous peoples ended with the loss of a third of the army after fierce resistance from the Mkgogan and Msbtunux peoples. Liu resigned in 1891 due to criticism of these costly projects. By the end of the Qing period, the western plains were fully developed as farmland with about 2.5 million Chinese settlers. The mountainous areas were still largely autonomous under the control of Indigenous peoples. Indigenous land loss under

5029-799: The Legislative Yuan and prevented the ratification of the Cross-Strait Service Trade Agreement in what became known as the Sunflower Student Movement . The movement gave rise to youth-based third parties such as the New Power Party , and is viewed to have contributed to the DPP's victories in the 2016 presidential and legislative elections , the latter of which resulted in the first DPP legislative majority in Taiwanese history. In January 2024, William Lai Ching-te of

5136-531: The M27 that was type-designated the M40 106-mm recoilless rifle in 1955. Although unsuitable for military purposes, M27 recoilless rifles were used to trigger controlled avalanches at ski resorts and mountain passes in the United States. The M40 is shaped like a long tube with an M8C .50 cal spotting rifle above. The spotting rifle fires a round whose trajectory closely matches that of the 105 mm round and gives off

5243-550: The M368 dummy round which could not be fired and was used for crew drill. The original U.S. HEAT round penetrated more than 400 mm of armor. Near the end of the M40's service life, both Austria and Sweden produced HEAT rounds for the weapon capable of penetrating more than 700 mm of armor. The ammunition for the M8C spotting rifle is not .50 BMG , but a 22mm shorter (12.7x77mm) round than used in .50 caliber machine guns. The spotter round

5350-426: The Marines, only 176 were converted between 1963 and 1965 to this standard. A mockup was built of an Ontos chassis with a Maxson M45 quadmount .50 BMG antiaircraft mount. While the M50 was designed as a tank destroyer, during the Vietnam War most M50s did not engage enemy armor as the North Vietnamese Army deployed few tanks. The Ontos was therefore more widely used by the US Marines for direct fire support for

5457-415: The Musha Incident of 1930. Intellectuals and laborers who participated in left-wing movements were also arrested and massacred (e.g. Chiang Wei-shui and Masanosuke Watanabe ). Around 1935, the Japanese began an island-wide assimilation project . Chinese-language newspapers and curriculums were abolished. Taiwanese music and theater were outlawed. A national Shinto religion was promoted in parallel with

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5564-421: The Ontos's 106 mm rifles with a new 105 mm design that included a revolver -style autoloader . This project was not accepted. Another proposed upgrade was replacing the GMC engine with a newer Chrysler 361 cu in (5.92 L) V8 engine. This upgrade was implemented and the variant was named Rifle, Multiple 106 mm, Self-propelled, M50A1 . However, of the 297 vehicles initially accepted by

5671-519: The PRC participates either refuse to grant membership to Taiwan or allow it to participate on a non-state basis. Domestically, the major political contention is between parties favoring eventual Chinese unification and promoting a pan-Chinese identity, contrasted with those aspiring to formal international recognition and promoting a Taiwanese identity ; in the 21st century, both sides have moderated their positions to broaden their appeal. In his Daoyi Zhilüe (1349), Wang Dayuan used " Liuqiu " as

5778-440: The PRC under a policy of " mutual non-denial ". Under Ma, Taiwan and China opened up direct flights and cargo shipments. The PRC government even made the atypical decision to not demand that Taiwan be barred from the annual World Health Assembly . Ma also made an official apology for the White Terror. However, closer economic ties with China raised concerns about its political consequences. In 2014, university students occupied

5885-406: The PRC. Until the 1970s, the ROC government was regarded by Western critics as undemocratic for upholding martial law, severely repressing any political opposition, and controlling the media. The KMT did not allow the creation of new parties and competitive democratic elections did not exist. From the late 1970s to the 1990s, Taiwan underwent political and social reforms that transformed it into

5992-439: The Qing administration into acculturated aborigines who had adopted Han culture and non-acculturated aborigines who had not. The Qing did little to administer or subjugate them. When Taiwan was annexed, there were 46 aboriginal villages under its control, likely inherited from the Kingdom of Tungning. During the early Qianlong period there were 93 acculturated villages and 61 non-acculturated villages that paid taxes. In response to

6099-400: The Qing occurred at a relatively slow pace due to the absence of state-sponsored land deprivation for the majority of Qing rule. Following the Qing defeat in the First Sino-Japanese War (1894–1895), Taiwan, its associated islands, and the Penghu archipelago were ceded to Japan by the Treaty of Shimonoseki . Inhabitants wishing to remain Qing subjects had to move to mainland China within

6206-537: The Republic of China has become commonly known as "Taiwan", after the main island. To avoid confusion, the ROC government in Taiwan began to put "Taiwan" next to its official name in 2005. In ROC government publications, the name is written as "Republic of China (Taiwan)", "Republic of China/Taiwan", or sometimes "Taiwan (ROC)". "Taiwan Area" was defined to mean the island of Taiwan, Penghu, Kinmen, Matsu, and other territory under ROC's effective control, in contrast to "Mainland Area" which refers to ROC territory outside

6313-484: The South China Sea . The ROC also briefly retained control of the entirety of Hainan , parts of Zhejiang ( Chekiang )—specifically the Dachen Islands and Yijiangshan Islands —and portions of Tibet , Qinghai , Xinjiang and Yunnan . The Communists captured Hainan in 1950, captured the Dachen Islands and Yijiangshan Islands during the First Taiwan Strait Crisis in 1955 and defeated the ROC revolts in Northwest China in 1958. ROC forces entered Burma and Thailand in

6420-400: The Taiwan Area and under Chinese Communist control. The Republic of China participates in most international forums and organizations under the name " Chinese Taipei " as a compromise with the People's Republic of China (PRC). For instance, it is the name under which it has participated in the Olympic Games as well as the APEC . "Taiwan authorities" is sometimes used by the PRC to refer to

6527-412: The Taiwan Strait undercut cross-Strait relations in 2002. He pushed for the first national referendum on cross-Strait relations, and called for an end to the National Unification Council . State-run companies began dropping "China" references in their names and including "Taiwan". In 2008, referendums asked whether Taiwan should join the UN. This act alienated moderate constituents who supported

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6634-415: The ammunition for the 105 mm M27 recoilless rifle, which the M40 replaced. It was produced in limited numbers for the United States Marine Corps after the United States Army cancelled the project. The Marines consistently reported excellent results when they used the Ontos for direct fire support against infantry in numerous battles and operations during the Vietnam War . The American stock of Ontos

6741-404: The area around Luoyi (present-day Luoyang ) during the Eastern Zhou and later to China's Central Plain , before being used as an occasional synonym for the state during the Qing era. The name of the republic had stemmed from the party manifesto of the Tongmenghui in 1905, which says the four goals of the Chinese revolution was "to expel the Manchu rulers, to revive Chunghwa , to establish

6848-423: The back blast from the firing knocked bricks out of a nearby building and knocked the rear windows out of several cars. The prototype and testing stage was completed by 1955, at which point the Army canceled its order. As an anti-tank vehicle the Ontos had several problems, including a small ammunition load, a very high profile for such a small vehicle, and the need for the crew to exit the vehicle in order to reload

6955-496: The capital. The Qing government generally tried to restrict migration to Taiwan throughout the duration of its administration because it believed that Taiwan could not sustain too large a population without leading to conflict. After the defeat of the Kingdom of Tungning, most of its population in Taiwan was sent back to the mainland, leaving the official population count at only 50,000, including 10,000 troops. Despite official restrictions, officials in Taiwan solicited settlers from

7062-520: The colonization of the area but were ignored. The Qing took on a more active colonization policy after 1874 when Japan invaded Indigenous territory in southern Taiwan and the Qing government was forced to pay an indemnity for them to leave. The administration of Taiwan was expanded with new prefectures, sub-prefectures, and counties. Mountain roads were constructed to make inner Taiwan more accessible. Restrictions on entering Taiwan were ended in 1875 and agencies for recruiting settlers were established on

7169-403: The development of textile, food, and other labor-intensive industries. As the Chinese Civil War continued, the government built up military fortifications throughout Taiwan. Veterans built the Central Cross-Island Highway through the Taroko Gorge in the 1950s. During the Second Taiwan Strait Crisis in 1958, Nike Hercules missiles were added to the formation of missile batteries throughout

7276-569: The eruption of the Korean War , US President Harry S. Truman dispatched the United States Seventh Fleet into the Taiwan Strait to prevent hostilities between the ROC and the PRC. The United States also passed the Sino-American Mutual Defense Treaty and the Formosa Resolution of 1955 , granting substantial foreign aid to the KMT regime between 1951 and 1965. The US foreign aid stabilized prices in Taiwan by 1952. The KMT government instituted many laws and land reforms that it had never effectively enacted on mainland China. Economic development

7383-465: The expropriation of businesses into government-operated monopolies, and the hyperinflation of 1945–1949. The shooting of a civilian on 28 February 1947 triggered island-wide unrest, which was suppressed with military force in what is now called the February 28 Incident . Mainstream estimates of the number killed range from 18,000 to 30,000. Chen was later replaced by Wei Tao-ming , who made an effort to undo previous mismanagement by re-appointing

7490-406: The gold was used to pay soldiers' salaries, with some used to issue the New Taiwan dollar , part of a price stabilization program to slow inflation in Taiwan. After losing control of mainland China in 1949, the ROC retained control of Taiwan and Penghu ( Taiwan, ROC ), parts of Fujian ( Fujian, ROC )—specifically Kinmen, Wuqiu (now part of Kinmen) and the Matsu Islands and two major islands in

7597-399: The government in Taiwan. Taiwan was joined to the Asian mainland in the Late Pleistocene , until sea levels rose about 10,000 years ago. Human remains and Paleolithic artifacts dated 20,000 to 30,000 years ago have been found. Study of the human remains suggested they were Australo-Papuan people similar to Negrito populations in the Philippines. Paleolithic Taiwanese likely settled

7704-533: The guns, exposing them to enemy fire. Although the Army had canceled its order, the Marine Corps was desperate for any anti-tank vehicles it could get, and ordered 297. Production ran from 1955 through 1957. The Marine Corps accepted its first vehicle on 31 October 1956. Several variants were also studied. The Utility Vehicle, Tracked, Infantry, T55 was a light Armored personnel carrier (APC), but only two versions of

7811-491: The infantry in combat, a role that was never emphasized in training or doctrine. Its light armor was effective against small arms but vulnerable to mines and rocket-propelled grenades . Consequently, many Ontos were deployed in static defense positions. The relatively light weight of the M50 made it exceptionally mobile for the amount of firepower it carried. In one operation, the Ontos was the only tracked vehicle light enough to cross

7918-554: The initial fighting and some 14,000 died in the first year of Japanese rule. Another 12,000 "bandit-rebels" were killed from 1898 to 1902. Subsequent rebellions against the Japanese (the Beipu uprising of 1907, the Tapani incident of 1915, and the Musha incident of 1930) were unsuccessful but demonstrated opposition to Japanese rule. The colonial period was instrumental to the industrialization of

8025-561: The island around 6,000 years ago. In the 17th century, large-scale Han Chinese immigration began under a Dutch colony and continued under the Kingdom of Tungning , the first predominantly Han Chinese state in Taiwanese history . The island was annexed in 1683 by the Qing dynasty of China and ceded to the Empire of Japan in 1895. The Republic of China , which had overthrown the Qing in 1912 under

8132-466: The island's most important trading center and served as its capital until 1887. Use of the current Chinese name ( 臺灣 / 台灣 ) became official as early as 1684 during the Qing dynasty with the establishment of Taiwan Prefecture centered in modern-day Tainan . Through its rapid development the entire Taiwanese mainland eventually became known as "Taiwan". The official name of the country in English

8239-434: The island, with its expansion of railways and other transport networks, the building of an extensive sanitation system, the establishment of a formal education system , and an end to the practice of headhunting . The resources of Taiwan were used to aid the development of Japan. The production of cash crops such as sugar greatly increased, and large areas were therefore diverted from the production of rice. By 1939, Taiwan

8346-476: The island. During the 1960s and 1970s, the ROC maintained an authoritarian, single-party government under the Kuomintang's Dang Guo system while its economy became industrialized and technology-oriented. This rapid economic growth, known as the Taiwan Miracle , occurred following a strategy of prioritizing agriculture, light industries, and heavy industries, in that order. Export-oriented industrialization

8453-551: The leadership of Sun Yat-sen , took control following the surrender of Japan in 1945. The immediate resumption of the Chinese Civil War resulted in the loss of the Chinese mainland to Communist forces , who established the People's Republic of China and the flight of the ROC central government to Taiwan in 1949. The effective jurisdiction of the ROC has since been limited to Taiwan, Penghu , and smaller islands. The early 1960s saw rapid economic growth and industrialization called

8560-642: The main island of Taiwan. After Chiang Ching-kuo's death in 1988, Lee Teng-hui became the first president of the ROC born in Taiwan. Lee's administration oversaw a period of democratization in which the Temporary Provisions against the Communist Rebellion were abolished and the Additional Articles of the Constitution were introduced. Congressional representation was allocated to only

8667-512: The mainland, but efforts to promote settlement ended soon after. In 1884, Keelung in northern Taiwan was occupied during the Sino-French War but the French forces failed to advance any further inland while their victory at Penghu in 1885 resulted in disease and retreat soon afterward as the war ended. Colonization efforts were renewed under Liu Mingchuan . In 1887, Taiwan's status was upgraded to

8774-612: The mainland, causing tens of thousands of annual arrivals by 1711. A permit system was officially recorded in 1712, but it likely existed as early as 1684; its restrictions included only allowing those to enter who had property on the mainland, family in Taiwan, and who were not accompanied by wives or children. Many of the male migrants married local Indigenous women. Over the 18th century, restrictions were relaxed. In 1732, families were allowed to move to Taiwan. By 1811, there were more than two million Han settlers in Taiwan, and profitable sugar and rice production industries provided exports to

8881-506: The mainland. In 1875, restrictions on entering Taiwan were repealed. Three counties nominally covered the entire western plains, but actual control was restricted to a smaller area. A government permit was required for settlers to go beyond the Dajia River . Qing administration expanded across the western plains area over the 18th century due to continued illegal crossings and settlement. The Taiwanese Indigenous peoples were categorized by

8988-588: The overthrown Ming, but ruled independently. However, Zheng Jing 's return to China to participate in the Revolt of the Three Feudatories paved the way for the Qing invasion and occupation of Taiwan in 1683. Following the defeat of Koxinga 's grandson by an armada led by Admiral Shi Lang in 1683, the Qing dynasty formally annexed Taiwan in May 1684, making it a prefecture of Fujian province while retaining its administrative seat (now Tainan) under Koxinga as

9095-452: The projectile and the cartridge case are loaded as one unit. The rear end of the cartridge case is perforated, to allow the propellant gas to escape through the vented breech, thus neutralizing recoil. Most projectiles (except HEAT) used are pre-engraved, that is, the rotating bands are cut to engage the rifled bore. Types of ammunition included HEAT , High Explosive Plastic- Tracer ( HEP-T ), canister , High Explosive Anti Personnel, and

9202-564: The protest was rapidly crushed by the authorities, it is considered as the main event that united Taiwan's opposition. In 1984, Chiang Ching-kuo selected Lee Teng-hui as his vice-president. After the Democratic Progressive Party (DPP) was (illegally) founded as the first opposition party in Taiwan to counter the KMT in 1986, Chiang announced that he would allow the formation of new parties. On 15 July 1987, Chiang lifted martial law on

9309-475: The prototype were built. It proved impractical due to the limited room inside, carrying only five infantry and forcing the driver to lie prone. A "stretched" version known as the Utility Vehicle, Tracked, Infantry, T56 was also built, and while it held a complete eight-man team, their equipment had to be carried on the outside. Neither was considered very useful. In 1960 there was a brief study made to replace

9416-458: The same year, Japan and the ROC signed a peace treaty . While initially enthusiastic about the return of Chinese administration and the Three Principles of the People , Formosans grew increasingly dissatisfied about being excluded from higher positions, the postponement of local elections even after the enactment of a constitution on the mainland, the smuggling of valuables off the island,

9523-481: The southern coast of Taiwan, mostly for seasonal fishing but also subsistence farming and trading, by the early 17th century. In 1603, Chen Di visited Taiwan on an anti- wokou expedition and recorded an account of the Taiwanese Indigenous people. In 1591, Japan sent envoys to deliver a letter requesting tribute relations with Taiwan. They found no leader to deliver the letter to and returned home. In 1609,

9630-431: The status quo, as well as those with cross-strait economic ties. It also created tension with the mainland and disagreements with the United States. Chen's administration was also dogged by public concerns over reduced economic growth, legislative gridlock, and corruption investigations . The KMT's nominee Ma Ying-jeou won the 2008 presidential election on a platform of increased economic growth and better ties with

9737-460: The suppression of traditional Taiwanese beliefs. Starting from 1940, families were also required to adopt Japanese surnames , although only 2% had done so by 1943. By 1938, 309,000 Japanese were residing in Taiwan. During the Second World War, the island was developed into a naval and air base while its agriculture, industry, and commerce suffered. Air attacks and the subsequent invasion of

9844-539: The transformation of Kaohsiung into a special municipality on par with Taipei. In the 1970s, Taiwan became the second fastest growing economy in Asia. Real growth in GDP averaged over 10 percent. In 1978, the combination of tax incentives and a cheap, well-trained labor force attracted investments of over $ 1.9 billion from overseas Chinese , the United States, and Japan. By 1980, foreign trade reached $ 39 billion per year and generated

9951-424: The turret only about 15 degrees. A second prototype used a new suspension system, new tracks, and a newer turret with about 40 degrees traverse. The vehicle could carry only eighteen rounds for the main guns inside the vehicle due to limited space. Its most prominent armament was its six M40 recoilless rifles . Four of the recoilless rifles also had .50 BAT (12.7x77mm) M8C spotting rifles attached, each of which fired

10058-475: The turrets and used them as fixed fortifications. Both these and the rest of the vehicles returned from Vietnam in 1970 and were cut up for scrap, with some of the chassis being sold off to be converted into construction vehicles. Some of the Ontos that were sold to construction companies were later acquired by collectors for restoration. The Ontos did see use as an anti-tank weapon during the American involvement in

10165-489: The weapon was hurriedly produced with the onset of the Korean War. The speed with which it was developed and fielded resulted in problems with reliability caused by trunnions that were mounted too far to the rear. The M27 was also considered too heavy by the U.S. Army and had a disappointing effective range due to the lack of a spotting rifle. Taking the M27 as the basis for a new design, the Army developed an improved version of

10272-516: The western third, where its highly urbanized population is concentrated. The combined territories under ROC control consist of 168 islands in total covering 36,193 square kilometres (13,974 square miles). The largest metropolitan area is formed by Taipei (the capital), New Taipei City , and Keelung . With around 23.9 million inhabitants, Taiwan is among the most densely populated countries . Taiwan has been settled for at least 25,000 years. Ancestors of Taiwanese indigenous peoples settled

10379-548: Was achieved by tax rebate for exports, removal of import restriction, moving from multiple exchange rate to single exchange rate system, and depreciation of the New Taiwan dollar. Infrastructure projects such as the Sun Yat-sen Freeway , Taoyuan International Airport , Taichung Harbor , and Jinshan Nuclear Power Plant were launched, while the rise of steel, petrochemical, and shipbuilding industries in southern Taiwan saw

10486-421: Was also adopted into the Chinese vernacular as the name of the sandbar and nearby area (Tainan). The modern word "Taiwan" is derived from this usage, which is written in different transliterations ( 大員 , 大圓 , 大灣 , 臺員 , 臺圓 or 臺窩灣 ) in Chinese historical records. The area occupied by modern-day Tainan was the first permanent settlement by both European colonists and Chinese immigrants. The settlement grew to be

10593-565: Was attached to Jinjiang . The Yuan dynasty officially incorporated Penghu under the jurisdiction of Tong'an County in 1281. Penghu was evacuated in the 15th century by the Ming dynasty as part of their maritime ban , which lasted until the late 16th century. In 1349, Wang Dayuan provided the first written account of a visit to Taiwan. By the 1590s, a small number of Chinese from Fujian had started cultivating land in southwestern Taiwan. Some 1,500-2,000 Chinese lived or stayed temporarily on

10700-556: Was developed to replicate the trajectory of the 106 mm ammunition, and features a tracer element and a point-detonating incendiary filler to create a puff of white smoke at the impact point. Four of the six 106mm rifles on the M50 Ontos mounted spotter rifles. Spotter rounds had a yellow tip with a red band and practice cartridges had a green tip. Although the spotting rifle could conceivably be used in an antipersonnel role, historic U.S. military doctrine strongly discouraged this use, for

10807-567: Was encouraged by American aid and programs such as the Joint Commission on Rural Reconstruction , which turned the agricultural sector into the basis for later growth. Under the combined stimulus of the land reform and the agricultural development programs, agricultural production increased at an average annual rate of 4 percent from 1952 to 1959. The government also implemented a policy of import substitution industrialization , attempting to produce imported goods domestically. The policy promoted

10914-440: Was initially successful due to operational similarities to the familiar M27 and ready availability from the U.S. military; however, in 1995, a USFS gunner was killed by shrapnel after a low-level premature warhead detonation inside an M40 barrel. The accident was attributed to an undiscovered hairline crack in the projectile's base plate. Following this incident, most USFS M40s were quickly replaced with surplus 105 mm howitzers , but

11021-426: Was largely expended towards the end of the conflict and the Ontos was removed from service in 1969. The Ontos (Greek for "thing" ) project was created to be an air transportable tank destroyer capable of being lifted by the cargo aircraft of the 1950s. This limited the vehicle to a weight between 10 and 20 metric tons . The Ontos also had to use the six-cylinder engine then widely used in the Army's GMC trucks. After

11128-563: Was settled by farmers of the Dapenkeng culture , most likely from what is now southeast China. These cultures are the ancestors of modern Taiwanese Indigenous peoples and the originators of the Austronesian language family . Trade with the Philippines persisted from the early 2nd millennium BCE, including the use of Taiwanese jade in the Philippine jade culture . The Dapenkeng culture

11235-702: Was succeeded by a variety of cultures throughout the island, including the Tahu and Yingpu ; the Yuanshan were characterized by rice harvesting. Iron appeared in such cultures as the Niaosung culture , influenced by trade with China and Maritime Southeast Asia . The Plains Indigenous peoples mainly lived in permanent walled villages, with a lifestyle based on agriculture , fishing , and hunting . They had traditionally matriarchal societies . The Penghu Islands were inhabited by Han Chinese fishermen by 1171, and in 1225 Penghu

11342-416: Was the seventh-greatest sugar producer in the world. The Han and Indigenous populations were classified as second- and third-class citizens, and many prestigious government and business positions were closed to them. After suppressing Han guerrillas in the first decade of their rule, Japanese authorities engaged in bloody campaigns against the Indigenous people residing in mountainous regions, culminating in

11449-405: Was unable to officially register the land. In the early 1800s, local officials convinced the emperor to officially incorporate the area by playing up the issue of piracy if the land was left alone. In 1814, some settlers attempted to colonize central Taiwan by fabricating rights to lease aboriginal land. They were evicted by government troops two years later. Local officials continued to advocate for

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