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{{Short description|383 battle between Eastern Jin and Former Qin}}
{{Expand Chinese|topic=mil|date=May 2021}}
{{Infobox military conflict
| conflict          = Battle of Fei River
| partof            = 
| image             = Battle of Fei River.png
| caption           = The situation during Battle of Fei River
| date              = 30 November 383
| place             = Fei River, China
| casus             = 
| territory         = Jin recaptures territories south of the Yellow River.
| result            = Jin victory
| combatant1        = [[Former Qin|Former Qin dynasty]]
| combatant2        = [[Jin dynasty (266-420)#Eastern Jin|Eastern Jin dynasty]]
| commander1        = [[Fu Jiān]] (Emperor Xuanzhao of Former Qin)<br/>[[Fu Rong]]{{KIA}}<br/>[[Yao Chang]]<br/>[[Murong Wei]]<br/>[[Murong De]]<br/>[[Murong Bao]]
| commander2        = [[Xie An]]<br/>[[Xie Xuan]]<br/>Xie Shi (謝石)<br/>Xie Yan (謝琰)<br/>[[Huan Chong]]<br/>[[Huan Yi (Shuxia)|Huan Yi]]
| strength1         = Book of Jin records 870,000{{efn|
A 2012 study of the historicity of the battle and the accuracy of descriptions carried in historical texts concluded with strong possibility that the scale of the engagement was "dramatically exaggerated", but that it did indeed occur.<ref>{{cite journal
|last=Diefenbach|first=Thilo
|year=2012
|journal=Zeitschrift der Deutschen Morgenländischen Gesellschaft
|publisher=Harrassowitz Verlag
|title=Die Schlacht am Fei (383) und ihre Folgen. Ein Beitrag zur chinesischen Historiographie nebst einer Übersetzung aus Sima Guangs Zizhi tongjian
|volume=162
|number=2
|pages=411–438
|jstor=10.13173/zeitdeutmorggese.162.2.0411
|url=https://www.jstor.org/stable/10.13173/zeitdeutmorggese.162.2.0411
|access-date=2022-06-14}}</ref> This study was spurred by a 1968 paper which called into question the historicity of the entire episode apart from the smaller initial sortie led by Liu Laozhi, based on the historical circumstances under which the records of the event were created and transmitted.<ref>{{cite journal 
|last=Rogers|first=Michael C.
|journal=T'oung Pao
|year=1968
|pages=50–72
|publisher=Brill
|location=Lieden
|volume=54
|number=1/3
|title=The Myth of the Battle of the Fei River (A.D. 383)
|doi=10.1163/156853268X00024
|jstor=4527704
|url=https://www.jstor.org/stable/4527704
|access-date=2022-06-14|url-access=subscription
}}</ref> The myth theory was never widely accepted, having been largely refuted in 1996 by scrutiny of the subsequent rewards of the successful generals named, and the fact that records of the battle were carried by texts composed and transmitted by the defeated side, although the compilers of the ''Book of Jin'' were deemed "careless".<ref>{{cite journal 
|last=Bielenstein|first=Hans
|author-link=Hans Bielenstein 
|pages=6–324 at '''87–88'''
|volume=68
|year=1996
|location=Stockholm
|journal=Bulletin of the Museum of Far Eastern Antiquities 
|title=The Six Dynasties, Volume 1}}</ref>
}}
| strength2         = 80,000 elite Beifu troops
| casualties1       = [[Book of Jin]] records 700,000+ {{citation need|date=November 2020}}
| casualties2       = Minimal
| casualties3       = 
| notes             = 
}}

The '''Battle of Fei River''', also known as the '''Battle of Feishui''' ({{zh|t=淝水之戰|s=淝水之战|p=Féishǔi zhī zhàn}}), took place in the autumn of 383 AD in China, where forces of the [[Di (Five Barbarians)|Di]]-led [[Former Qin|Former Qin dynasty]] were decisively defeated by the outnumbered army of the [[Jin dynasty (266-420)#Eastern Jin|Eastern Jin dynasty]].<ref name=MAA>{{cite book|author=C J Peers| title=Imperial Chinese Armies (1) 200 BC - AD 589 | publisher=Osprey Publishing | year=1995 | isbn=1-85532-514-4 }}</ref> The location of the battle, the Fei River, no longer exists but is believed to have flowed through modern [[Lu'an]], [[Anhui]], near the [[Huai River]].<ref>{{cite book|author=Bo Yang|author-link=Bo Yang|title=Bo Yang Edition of the [[Zizhi Tongjian]]|volume=26}}</ref> The battle is considered to be one of the most significant and pivotal battles in Chinese history, as it ensured the survival of the Eastern Jin and Han-ruled regimes in [[South China]], whereas the Former Qin fell into a massive civil war, resulting in its eventual collapse.<ref name="ZS">{{cite book|author=Bo Yang|author-link=Bo Yang|trans-title=Summaries of the History of the Chinese People|script-title=zh:中國人史綱|title=Zhongguoren Shigang|volume=1|chapter=17|location=Taipei|publisher=Yuanliu chuban {{lang|zh|italics=no|遠流出版}} |year=2002}}</ref>

[[File:Feiriverbattle.PNG|right|350px|thumb|Former Qin is in purple, while the Eastern Jin is in yellow. The red line marks the new border between Former Qin and Eastern Jin after the latter's victory at Fei River, while the border marked on the map represents the pre-battle border, the furthest line reached by Former Qin forces before their catastrophic defeat.]]

== Background ==
The state of Former Qin, led by ethnic [[Di (Five Barbarians)|Di]] ({{zhi|氐}}) tribesmen,<ref name=MAA/> rose rapidly from a string of successes in the 350s. Fu Jiān, the nephew of the founder [[Fu Jiàn]], was a vigorous leader of tremendous drive and ambition.<ref name=ZS/> In 370 he conquered the state of [[Former Yan]] and in 373 seized modern [[Sichuan]] and [[Chongqing]] from Jin. In 379, the strategically important city of [[Xiangyang District, Xiangfan|Xiangyang]], gateway to the Middle Yangtze, fell to Qin. By 381, he had conquered all of north China and was preparing for an invasion of the south.<ref name=ZZTJ104>{{harvnb|''Zizhi Tongjian''|1084|loc=[[s:zh:資治通鑑:第104卷|vol. 104]]}}</ref><ref name=ZZTJ105>{{harvnb|''Zizhi Tongjian''|1084|loc=[[s:zh:資治通鑑:第105卷|vol. 105]]}}</ref>

In May 383, a Jin army of 100,000 commanded by [[Huan Chong]] attempted to recover Xiangyang but was driven off by a Qin relief column of 50,000 men.<ref name="autogenerated1">{{harvnb|''Zizhi Tongjian''|1084}}{{volume needed|i=0|date=June 2024}}</ref> In response, Fu Jiān ordered a general mobilization against Jin: 6 of every 10 able-bodied men were conscripted, and 30,000 elite guards ({{zhi|羽林郎}}) were gathered. In August 383, Fu Jiān sent his brother, [[Fu Rong]], the Duke of Yangping (who had opposed the campaign), with an army of 300,000 as the advance force. Later that month, Fu Jiān marched with his army of 270,000 cavalry and 600,000 infantry from [[Chang'an]].<ref name="autogenerated1" /> In September, Fu Jiān reached Xiangcheng. Separate columns were to push downstream from Sichuan, but the main offensive would occur against the city of [[Shouchun]] on the [[Huai River]]. [[Emperor Xiaowu of Jin]] hurriedly made preparations for defense. He gave [[Huan Chong]] responsibility for the defense of the Middle Yangtze. The pressing defense of the Huai River was given to Xie Shi ({{lang|zh|[[:zh:謝石|謝石]]}}) and [[Xie Xuan]] and the elite 80,000-strong Beifu Army {{nowrap|({{zhi|北府兵}}).}}<ref name="autogenerated1" /> Prime Minister [[Xie An]] oversaw overall strategy.<ref name=ZZTJ104/><ref name=ZZTJ105/>

Huan Chong was deeply worried and sent three thousand elite soldiers into the city to support the capital, but was resolutely stopped by Xie An, saying: "The way the imperial court will deal with it has been decided, there is no shortage of soldiers and weapons, please stay in the west, just in case." Huan Chong sighed at his subordinates and said, "Xie An has the strength to live in the imperial court, but he is not familiar with the means of leading troops to fight. Now that the great enemy is coming, they are still playing to their heart's content, they will talk big, and they can only send young people (Xie Xuan) who have never fought to resist, coupled with the lack of numbers and weak troops, the end of the country has long been known, and we are about to be ruled by barbarians!"<ref>{{harvnb|''Book of Jin''| 648| loc= vol. 74: [[:zh:s:晉書/卷074#桓沖|biography of Huan Chong]]}}: "沖深以根本為慮，乃遣精銳三千來赴京都。謝安謂三千人不足以為損益，而欲外示閒暇，聞軍在近，固不聽。報云：「朝廷處分已定，兵革無闕，西籓宜以為防。」時安已遣兄子玄及桓伊等諸軍，沖謂不足以為廢興，召佐吏，對之歎曰：「謝安乃有廟堂之量，不閑將略。今大敵垂至，方游談不暇，雖遣諸不經事少年，眾又寡弱，天下事可知，吾其左衽矣！」"</ref> Later, the Jin army on the eastern front defeated the Qin army, and Huan Chong was ashamed to learn the news, and died of an attack of illness at the age of 57.<ref>{{harvnb|''Book of Jin''| 648| loc= vol. 74: [[:zh:s:晉書/卷074#桓沖|biography of Huan Chong]]}}: "俄而聞堅破，大勳克舉，又知朱序因以得還，沖本疾病，加以慚恥，發病而卒，時年五十七。"</ref>

===Former Qin Army===
Fu Jiān's force was composed of many smaller armies levied from the conquered northern territories, along with cavalry drawn from the nomadic peoples of the north (the [[Xianbei]] and [[Xiongnu]]).<ref name=MAA/> Most men had little or no loyalty to the Former Qin, and many were forced to join or joined only because of military [[ration]]s and pay. Many [[battalion]]s had problems following orders as instructed by their commanding officers. Fu was warned of the poor training of his [[heterogeneous]] army, but instead chose to rely on the vast number of men that made up the army, saying, "My army is so huge that if all the men throw their whips into the Yangtze, its flow will be stopped" ({{lang|zh|投鞭断流}}).<ref name=MAA/>

===Jin Army===
[[Xie Xuan]]'s Beifu army was drawn from the militarized settlements of powerful local families, with officers bringing along their own hereditary troops. This army underwent significant training and could be considered a professional military unit.<ref>{{cite book
|last=Lewis|first=Mark Edward
|author-link=Mark Edward Lewis
|title=China Between Empires: The Northern and Southern Dynasties
|pages=67–68
|publisher=Belknap 
|place=Cambridge MA 
|orig-year=2009
|year=2011
|isbn=9780674060357}}</ref>

== Battle ==
In October 383, the Former Qin forces under Fu Rong captured the important Jin city of Shouyang ({{zhi|壽陽}}, in modern [[Lu'an]], [[Anhui]]).<ref name="autogenerated1" /> Fu Jiān, seeing the possibility of achieving a quick victory, left his main force at Xiangcheng and led 8,000 light cavalry to rendezvous with Fu Rong. Fu Jiān sent captured Jin official [[Zhu Xu (Jin dynasty)|Zhu Xu]] as a messenger to try to persuade Xie Shi to surrender.<ref name="autogenerated1" /> Instead, Zhu tipped off Xie Shi to the fact that the entire Former Qin force had not yet arrived and that he should try to defeat the advanced Former Qin forces to cripple the Former Qin's campaign.<ref name="autogenerated1" /> At Zhu's suggestion, Xie Xuan and {{III|Liu Laozhi|zh|劉牢之}} led 5,000 elite troops to engage the advanced Former Qin force, scoring a devastating victory, killing 15,000 men.<ref name="autogenerated1" /> Afterwards, Jin troops were lined up in a wide formation to give the illusion that the Jin forces could match Former Qin's manpower. Because of the early minor defeats and the Jin formation, Fu Jiān overestimated the amount of Jin forces.

In November 383, the Former Qin troops set up camp west of the {{ill|North Fei River|lt=Fei River|zh|北淝河}}.<ref name="autogenerated1" /> The Jin forces stopped east of the Fei and could not advance.<ref name="autogenerated1" /> Xie Xuan sent a messenger to Fu Rong, suggesting that the Former Qin forces retreat slightly west to allow Jin troops to cross the Fei River so that the two armies could engage.<ref name="autogenerated1" /> Most Former Qin generals opposed that plan,<ref name="autogenerated1" /> since maneuvering such a large army in that manner was too complicated for the benefits that might be obtained, especially with so many poorly trained troops. Fu Jiān overruled them, however, planning to attack the Jin army as it was crossing the river<ref name="autogenerated1" /> to seize a tactical advantage, as the Jin would be split in two. Fu Rong agreed and ordered a retreat.<ref name="autogenerated1" />

The Jin's tactics of [[ambush]] and [[bribery]] now paid off. Many soldiers in the Former Qin army began to wonder why a sudden retreat order was given. Already retreating and demoralized, the Former Qin army went into a panic when Zhu Xu raised a cry of "the Qin army has been defeated" and it was routed.<ref name=MAA/> Xie Xuan and generals {{III|Xie Yan|zh|謝琰}} and [[Huan Yi (Shuxia)|Huan Yi]] crossed the river and launched a major assault.<ref name="autogenerated1" /> The "Qin is Defeated" rumor spread like wildfire, and chaos followed. Fu Rong personally tried to halt the retreat and reorganize his troops,<ref name="autogenerated1" /> but his horse suddenly fell and he was killed by advancing Jin troops.<ref name="autogenerated1" />

The Jin generals noticed the chaotic footprints and wheel marks and declared that the Former Qin army was not in an organized retreat but was indeed in total disarray. The Jin soldiers continued their pursuit, and the entire Former Qin force collapsed.<ref name="autogenerated1" />
A large amount of food and supplies were abandoned as Former Qin soldiers tried to escape with their lives. In the ensuing retreat and pursuit, an estimated 70-80% of the Former Qin troops died from combat, starvation and exposure to the elements.<ref name="autogenerated1" />

==Aftermath==
[[File:Jin Iron Swordss.jpg|thumb|Jin iron swords]]
The Jin army defeated the overwhelming Former Qin forces with only minor casualties. The Jin had routed and killed most of the escaping soldiers of the Former Qin army, greatly weakening the pool of troops from which the Former Qin could draw. Fu Jiān's forces were not able to be reorganized, even after he eventually withdrew to [[Luoyang]] under the protection of [[Murong Chui]], whose 30,000-man army was one of the few that did not collapse.<ref name=ZZTJ105/>

Meanwhile, agrarian rebellions arose after news of the defeat at Fei River. Murong Chui used this opportunity to ask Fu Jiān to let him try to lead an army to pressure the rebels in the eastern empire back into submission. Instead, Murong Chui himself rebelled in early 384, which started a chain reaction of many [[Xianbei]] and [[Qiang (historical people)|Qiang]] uprisings. The Former Qin capital [[Chang'an]] would fall in 385 to the Xianbei forces of [[Western Yan]], and Fu Jiān himself would die later that year at the hands of his former general [[Yao Chang]], the founder of [[Later Qin]]. While Former Qin would last until 394, it would never regain its power and glory.<ref name="JS 114">{{harvnb|''Book of Jin''|648|loc=[[:zh:s:晉書/114|vol. 114]]}}</ref> In addition, after the battle, Jin forces advanced to the Yellow River and recovered much of the Chinese heartland, forming a basis for [[Liu Yu's expeditions]] and the Southern and Northern dynasties period that would follow soon afterward.

This battle is famous not only because of its significance in history but also because it demonstrated the importance of troop training, morale, loyalty and organized battle command. The battle was also significant in that it ensured South China would remain independent until 589 AD, when North China was again under a Han Chinese regime, the [[Sui dynasty]].

==References==
{{notelist}}
{{Reflist}}
* {{ Cite book| title= Book of Jin | title-link= Book of Jin
| editor= Fang Xuanling
| editor-link= Fang Xuanling
| display-editors=etal
| orig-date= 648 | date= 1974
| publisher= Zhonghua Shuju| place= Beijing
| script-title= zh:晉書
| ref={{sfnref|''Book of Jin''|648}}
| language=zh 
}}
** Volumes: [[:zh:s:晉書/卷009|9]], [[:zh:s:晉書/卷074|74]], [[:zh:s:晉書/卷079|79]], [[:zh:s:晉書/卷113|113]].
*{{ cite book | editor = Sima Guang | editor-link= Sima Guang| title= Zizhi Tongjian | title-link= Zizhi Tongjian| orig-date= 1084 | date= 1934 | publisher= Zhonghua Shuju| place= Hong Kong | ref={{sfnref|''Zizhi Tongjian''|1084}} |language=zh}}

{{Jin dynasty (265–420) topics}}
{{16 Kingdoms}}

{{Coord|31|44|10|N|116|31|12|E|display=title}}

[[Category:380s conflicts|Fei River]]
[[Category:Battles involving Imperial China|Fei River 383]]
[[Category:Former Qin]]
[[Category:Jin dynasty (266–420)]]
[[Category:4th century in China]]
[[Category:383]]