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98-509: During a siege , a coupure is a ditch or an earthwork or wooden palisade built behind a breach made by the attacker's guns in the walls of a fortress or a city. Its purpose is to hinder and frustrate an attack made by the forlorn hope . This was a strategy used many times by defenders of fortifications, for example, by the Irish defenders during the Siege of Clonmel (April - May 1650). It can also be

196-438: A 'horizontal' or east–west alliance called lianheng ( 連橫{ ), in which a state would ally with Qin to participate in its ascendancy. There were some initial successes in hezong , though mutual suspicions between allied states led to the breakdown of such alliances. Qin repeatedly exploited the horizontal alliance strategy to defeat the states one by one. During this period, many philosophers and tacticians travelled around

294-404: A city or fortress that cannot be easily taken by a quick assault, and which refuses to surrender . Sieges involve surrounding the target to block provision of supplies and reinforcement or escape of troops (a tactic known as " investment "). This is typically coupled with attempts to reduce the fortifications by means of siege engines , artillery bombardment, mining (also known as sapping), or

392-524: A coupure is with soil or sandbags . More sophisticated means of closing a coupure consist of wooden or metal beams or doors. Older coupures are usually brick structures with provisions for placing two stacks of beams between them. Between the stacks of beams, which form two walls, horse manure or other animal faeces mixed with straw is dumped and compacted. This type of material swells when wet, thus providing additional waterproofing. Modern coupures can consist of only one wall and can be made watertight with

490-509: A good relationship with his Qi counterpart, with both promising to recognize the other as "king". Early in the Warring States period, Chu was one of the strongest states in China. The state rose to a new level of power around 389 BC when King Dao of Chu ( 楚悼王 ) named the famous reformer Wu Qi as his chancellor. Chu rose to its peak in 334 BC, when it conquered Yue to its east on

588-413: A great defeat at the hands of Qin. King Kao of Zhou had enfeoffed his younger brother as Duke Huan of Henan. Three generations later, this cadet branch of the royal house began calling themselves "dukes of East Zhou". Upon the ascension of King Nan in 314, East Zhou became an independent state. The king came to reside in what became known as West Zhou. Towards the end of the Warring States period,

686-419: A minor force could seldom be maintained. A besieging army, encamped in possibly squalid field conditions and dependent on the countryside and its own supply lines for food, could very well be threatened with the disease and starvation intended for the besieged. To end a siege more rapidly, various methods were developed in ancient and medieval times to counter fortifications, and a large variety of siege engines

784-513: A passage through a glacis to create a sally port , so that the defenders can launch a sortie against the attackers. When a road or railway crosses a floodwall or levee the road or railway can either be laid on a grade or through a cut in the floodwall or levee. In case of expected flooding the cut can temporarily be closed. This type of coupure is also known as vehicle gate , floodwall gate or similar names. The closure can be accomplished by various means. The most basic means of closing

882-405: A rebellious Anatolian vassal in the 14th century BC ended when the queen mother came out of the city and begged for mercy on behalf of her people. The Hittite campaign against the kingdom of Mitanni in the 14th century BC bypassed the fortified city of Carchemish . If the main objective of a campaign was not the conquest of a particular city, it could simply be passed by. When the main objective of

980-611: A result, King Hui of Wei (still a Marquess at the time) was able to ascend the throne of Wei. Zhao extended from the Shanxi plateau across the plain to the borders of Qi. Wei reached east to Qi, Lu , and Song . To the south, the weaker state of Han held the east–west part of the Yellow River valley, surrounded the Zhou royal domain at Luoyang and held an area north of Luoyang called Shangdang . Duke Kang of Qi died in 379 BC with no heir from

1078-403: A siege might be a surprise attack, attempting to overwhelm the defenders before they were ready or were even aware there was a threat. This was how William de Forz captured Fotheringhay Castle in 1221. The most common practice of siege warfare was to lay siege and just wait for the surrender of the enemies inside or, quite commonly, to coerce someone inside to betray the fortification. During

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1176-436: A siege progressed, the surrounding army would build earthworks (a line of circumvallation ) to completely encircle their target, preventing food, water, and other supplies from reaching the besieged city. If sufficiently desperate as the siege progressed, defenders and civilians might have been reduced to eating anything vaguely edible – horses, family pets, the leather from shoes, and even each other . The Hittite siege of

1274-614: A simple battering ram had come into use in the previous millennium, the Assyrians improved siege warfare and used huge wooden tower-shaped battering rams with archers positioned on top. In ancient China, sieges of city walls (along with naval battles) were portrayed on bronze 'hu' vessels , like those found in Chengdu , Sichuan in 1965, which have been dated to the Warring States period (5th to 3rd centuries BC). An attacker's first act in

1372-520: A son of King Hui by a concubine (i.e. a younger half-brother of King Wu) could be established as King Zhao , who in stark contrast to his predecessor went on to rule for an unprecedented 53 years. After the failure of the first vertical alliance, Su Qin eventually came to live in Qi, where he was favored by King Xuan and drew the envy of the ministers. An assassination attempt in 300 BC left Su mortally wounded but not dead. Sensing death approaching, he advised

1470-515: A succession struggle in 307, yielded to the new coalition and appointed Lord Mengchang its chief minister. The alliance between Qin and Qi was sealed by a Qin princess marrying King Min. This horizontal or east–west alliance might have secured peace except that it excluded the State of Zhao . Around 299 BC, the ruler of Zhao became the last of the seven major states to proclaim himself "king". In 298 BC, Zhao offered Qin an alliance and Lord Mengchang

1568-454: A wheeled siege ramp with grappling hooks known as the Cloud Bridge (the protractible, folded ramp slinging forward by means of a counterweight with rope and pulley), and wheeled 'hook-carts' used to latch large iron hooks onto the tops of walls to pull them down. When enemies attempted to dig tunnels under walls for mining or entry into the city, the defenders used large bellows (the type

1666-399: A young age and passed tax laws to encourage raising multiple children. He also enacted policies to free convicts who worked in opening wastelands for agriculture. Shang abolished primogeniture and created a double tax on households that had more than one son living in the household, to break up large clans into nuclear families. Shang also moved the capital to reduce the influence of nobles on

1764-493: Is a military blockade of a city, or fortress , with the intent of conquering by attrition, or by well-prepared assault. Siege warfare (also called siegecraft or poliorcetics ) is a form of constant, low-intensity conflict characterized by one party holding a strong, static, defensive position. Consequently, an opportunity for negotiation between combatants is common, as proximity and fluctuating advantage can encourage diplomacy . A siege occurs when an attacker encounters

1862-421: Is known from Egyptian tomb reliefs of the 24th century BC, showing Egyptian soldiers storming Canaanite town walls on wheeled siege ladders. Later Egyptian temple reliefs of the 13th century BC portray the violent siege of Dapur , a Syrian city, with soldiers climbing scale ladders supported by archers. Assyrian palace reliefs of the 9th to 7th centuries BC display sieges of several Near Eastern cities. Though

1960-407: Is to build a line of earth-works, consisting of a rampart and trench, surrounding it. During the process of circumvallation, the attacking force can be set upon by another force, an ally of the besieged place, due to the lengthy amount of time required to force it to capitulate. A defensive ring of forts outside the ring of circumvallated forts, called contravallation, is also sometimes used to defend

2058-457: The Huo Long Jing , this manuscript of Jiao Yu recorded an earlier Song-era cast-iron cannon known as the 'flying-cloud thunderclap eruptor' (fei yun pi-li pao). The manuscript stated that ( Wade–Giles spelling): The shells ( phao ) are made of cast iron, as large as a bowl and shaped like a ball. Inside they contain half a pound of 'magic' gunpowder ( shen huo ). They are sent flying towards

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2156-701: The Battle of Alesia , the Roman legions created two huge fortified walls around the city. The inner circumvallation, 16 km (10 mi), held in Vercingetorix 's forces, while the outer contravallation kept relief from reaching them. The Romans held the ground in between the two walls. The besieged Gauls, facing starvation, eventually surrendered after their relief force met defeat against Caesar's auxiliary cavalry. The Sicarii Zealots who defended Masada in AD 73 were defeated by

2254-578: The Battle of Maling . After the battle all three of the Jin successor states appeared before King Xuan of Qi , pledging their loyalty. In the following year Qin attacked the weakened Wei. Wei was devastatingly defeated and ceded a large part of its territory in return for truce. With Wei severely weakened, Qi and Qin became the dominant states in China. Wei came to rely on Qi for protection, with King Hui of Wei meeting King Xuan of Qi on two occasions. After Hui's death, his successor King Xiang also established

2352-718: The Indus Valley civilization were also fortified. By about 3500 BC, hundreds of small farming villages dotted the Indus River floodplain. Many of these settlements had fortifications and planned streets. The stone and mud brick houses of Kot Diji were clustered behind massive stone flood dikes and defensive walls, for neighbouring communities quarrelled constantly about the control of prime agricultural land. Mundigak (c. 2500 BC) in present-day south-east Afghanistan has defensive walls and square bastions of sun-dried bricks . City walls and fortifications were essential for

2450-518: The Mandate of Heaven to justify their conquest of other states and spread their influence. The struggle for hegemony eventually created a state system dominated by several large states, such as Jin , Chu, Qin, Yan, and Qi, while the smaller states of the Central Plain tended to be their satellites and tributaries. Other major states also existed, such as Wu and Yue in the southeast. The last decades of

2548-685: The Piankhi stela , records how the Nubians laid siege to and conquered several Egyptian cities by using battering rams, archers, and slingers and building causeways across moats. During the Peloponnesian War , one hundred sieges were attempted and fifty-eight ended with the surrender of the besieged area. Alexander the Great 's army successfully besieged many powerful cities during his conquests. Two of his most impressive achievements in siegecraft took place in

2646-549: The State of Zhao , Handan , founded in 386 BC, also had walls that were 20 m (66 ft) wide at the base; they were 15 m (49 ft) tall, with two separate sides of its rectangular enclosure at a length of 1,400 m (1,530 yd). The cities of the Indus Valley Civilization showed less effort in constructing defences, as did the Minoan civilization on Crete . These civilizations probably relied more on

2744-520: The Vietnam War . Until the invention of gunpowder -based weapons (and the resulting higher-velocity projectiles), the balance of power and logistics definitely favored the defender. With the invention of gunpowder, cannon and mortars and howitzers (in modern times), the traditional methods of defense became less effective against a determined siege. Although there are numerous ancient accounts of cities being sacked, few contain any clues to how this

2842-465: The Western Zhou dynasty underwent enormous changes after 771 BC with the flight of the Zhou court to modern-day Luoyang and the diminution of its relevance and power. The Spring and Autumn period led to a few states gaining power at the expense of many others, the latter no longer able to depend on central authority for legitimacy or protection. During the Warring States period, many rulers claimed

2940-537: The Yuan dynasty in 1271, was very effective, allowing the Mongols to sweep through large areas. Even if they could not enter some of the more well-fortified cities, they used innovative battle tactics to grab hold of the land and the people: By concentrating on the field armies, the strongholds had to wait. Of course, smaller fortresses, or ones easily surprised, were taken as they came along. This had two effects. First, it cut off

3038-676: The concentric castle from the period of the Crusades —and more dangerous to attackers—witness the increasing use of machicolations and murder-holes , as well the preparation of hot or incendiary substances . Arrowslits (also called arrow loops or loopholes), sally ports (airlock-like doors) for sallies and deep water wells were also integral means of resisting siege at this time. Particular attention would be paid to defending entrances, with gates protected by drawbridges , portcullises , and barbicans . Moats and other water defenses, whether natural or augmented, were also vital to defenders. In

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3136-519: The early modern period , siege warfare dominated the conduct of war in Europe. Leonardo da Vinci gained some of his renown from design of fortifications. Medieval campaigns were generally designed around a succession of sieges. In the Napoleonic era , increasing use of ever more powerful cannons reduced the value of fortifications. In the 20th century, the significance of the classical siege declined. With

3234-473: The siege of Tyre and the siege of the Sogdian Rock . His engineers built a causeway that was originally 60 m (200 ft) wide and reached the range of his torsion-powered artillery, while his soldiers pushed siege towers housing stone throwers and light catapults to bombard the city walls. Most conquerors before him had found Tyre , a Phoenician island-city about 1 km (1,100 yd) from

3332-451: The state of Qin became disproportionately powerful compared with the other six states. As a result, the policies of the six states became overwhelmingly oriented towards dealing with the Qin threat, with two opposing schools of thought. One school advocated a 'vertical' or north–south alliance called hezong ( 合縱 ) in which the states would ally with each other to repel Qin. The other advocated

3430-454: The 6th century BC to their nominally subordinate nobles and military commanders, a situation arising from the traditions of the Jin which forbade the enfeoffment of relatives of the ducal house. This allowed other clans to gain fiefs and military authority, and decades of internecine struggle led to the establishment of four major families, the Han, Zhao, Wei and Zhi. The Battle of Jinyang saw

3528-450: The Chinese commonly used in heating up a blast furnace for smelting cast iron ) to pump smoke into the tunnels in order to suffocate the intruders. Advances in the prosecution of sieges in ancient and medieval times naturally encouraged the development of a variety of defensive countermeasures. In particular, medieval fortifications became progressively stronger—for example, the advent of

3626-731: The European Middle Ages , virtually all large cities had city walls— Dubrovnik in Dalmatia is a well-preserved example—and more important cities had citadels , forts , or castles . Great effort was expended to ensure a good water supply inside the city in case of siege. In some cases, long tunnels were constructed to carry water into the city. Complex systems of tunnels were used for storage and communications in medieval cities like Tábor in Bohemia , similar to those used much later in Vietnam during

3724-466: The Great Wall. Sima Qian writes that the other states were so awestruck that nobody dared attack Qi for more than 20 years. The demonstrated military prowess also had a calming effect on Qi's own population, which experienced great domestic tranquility during Wei's reign. By the end of King Wei's reign, Qi had become the strongest of the states and proclaimed itself "king"; establishing independence from

3822-509: The Pacific coast. The series of events leading up to this began when Yue prepared to attack Qi to its north. The King of Qi sent an emissary who persuaded the King of Yue to attack Chu instead. Yue initiated a large-scale attack at Chu but was defeated by Chu's counter-attack. Chu then proceeded to conquer Yue. King Xian of Zhou had attempted to use what little royal prerogative he had left by appointing

3920-679: The Roman legions, who built a ramp 100 metres (330 ft) high up to the fortress's west wall. During the Roman–Persian Wars , siege warfare was extensively being used by both sides. In the Middle Ages, the Mongol Empire 's campaign against China (then comprising the Western Xia dynasty , Jin dynasty , and Southern Song dynasty ) by Genghis Khan until Kublai Khan , who eventually established

4018-754: The Southern Song Chinese held out against the enormous barrage of Mongol attacks. Much of this success in defense lay in the world's first use of gunpowder (i.e. with early flamethrowers , grenades , firearms , cannons, and land mines ) to fight back against the Khitans , the Tanguts , the Jurchens , and then the Mongols. The Chinese of the Song period also discovered the explosive potential of packing hollowed cannonball shells with gunpowder. Written later c.  1350 in

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4116-460: The Spring and Autumn era were marked by increased stability, as the result of peace negotiations between Jin and Chu which established their respective spheres of influence. This situation ended with the partition of Jin, whereby the state was divided between the houses of Han, Zhao and Wei, leading to the seven major warring states. The rulers of Jin had steadily lost political powers since the middle of

4214-509: The State of Zhongshan to the northeast on the other side of Zhao. At the same time he pushed west across the Yellow River to the Luo River taking the area of Xihe (literally 'west of the [Yellow] river'). The growing power of Wei caused Zhao to back away from the alliance. In 383 BC it moved its capital to Handan and attacked the small state of Wey . Wey appealed to Wei which attacked Zhao on

4312-497: The Zhou dynasty (see below). King Hui of Wei (370–319 BC) set about restoring the state. In 362–359 BC he exchanged territories with Han and Zhao in order to make the boundaries of the three states more rational. In 364 BC, Wei was defeated by Qin at the Battle of Shimen and was only saved by the intervention of Zhao. Qin won another victory in 362 BC. In 361 BC the Wei capital

4410-608: The Zhou dynasty, instead proclaiming themselves fully independent kingdoms. During the early Warring States period Qin generally avoided conflicts with the other states. This changed during the reign of Duke Xiao , when prime minister Shang Yang made centralizing and authoritarian reforms in accordance with his Legalist philosophy between the years 356 and 338 BC. Shang introduced land reforms, privatized land, rewarded farmers who exceeded harvest quotas, enslaved farmers who failed to meet quotas, and used enslaved subjects as rewards for those who met government policies. As manpower

4508-544: The administration. The rise of Qin was recognized by the royal court, and in 343 BC the king conferred the title of Count (伯 Bó) on Duke Xiao. As was customary, a conference was hosted which the feudal lords attended, and during which the Son of Heaven bestowed the title. After the reforms Qin became much more aggressive. In 340 Qin took land from Wèi after it had been defeated by Qi. In 316 Qin conquered Shu and Ba in Sichuan to

4606-556: The advent of mobile warfare , a single fortified stronghold is no longer as decisive as it once was. While traditional sieges do still occur, they are not as common as they once were due to changes in modes of battle, principally the ease by which huge volumes of destructive power can be directed onto a static target. Modern sieges are more commonly the result of smaller hostage, militant, or extreme resisting arrest situations. The Assyrians deployed large labour forces to build new palaces, temples, and defensive walls. Some settlements in

4704-479: The allied Han, Zhao and Wei destroy the Zhi family (453 BC) and their lands were distributed among them. With this, they became the de facto rulers of most of Jin's territory, though this situation would not be officially recognised until half a century later. The Jin division created a political vacuum that enabled during the first 50 years expansion of Chu and Yue northward and Qi southward. Qin increased its control of

4802-487: The ancient Near East in historical sources and in art, there are very few examples of siege systems that have been found archaeologically. Of the few examples, several are noteworthy: The earliest representations of siege warfare have been dated to the Protodynastic Period of Egypt , c.  3000 BC . These show the symbolic destruction of city walls by divine animals using hoes. The first siege equipment

4900-522: The arts, and is perhaps best remembered for hosting the Confucian philosopher Mencius at his court; their conversations form the first two chapters of the book which bears Meng Zi's name . The title of king ( wang , 王 ) was held by figurehead rulers of the Zhou dynasty, while the rulers of most states held the title of duke ( gong , 公 ) or marquess ( hou , 侯 ). A major exception was Chu, whose rulers were called kings since King Wu of Chu started using

4998-519: The attackers from outside. Ancient cities in the Middle East show archaeological evidence of fortified city walls . During the Warring States period of ancient China , there is both textual and archaeological evidence of prolonged sieges and siege machinery used against the defenders of city walls . Siege machinery was also a tradition of the ancient Greco-Roman world . During the Renaissance and

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5096-522: The backdrop for the machinations of the eponymous Warring States. The label "Warring States period" derives from the Record of the Warring States , a work of history compiled during the early Han dynasty (202 BC – 220 AD). The political geography of the era was dominated by the Seven Warring States , namely: Besides these seven major states other smaller states survived into

5194-500: The beginning of the Warring States period, Sima Qian 's choice of 475 BC is the most often cited. The era largely corresponds to the second half of the Eastern Zhou period, where the king of Zhou formally ruled as Chinese sovereign , but had lost political power and functioned in practice as a figurehead. Instead, actual power was shared among the king of the warring states which function similar to Duchies . This dynamic served as

5292-620: The beginning of the era. Proposed starting points include: The Eastern Zhou dynasty began its fall around 5th century BC. As their influence waned, they had to rely on armies in allied states rather than their own military force. Hundreds of smaller polities coalesced into seven major states which included: Chu, Han, Qin, Wei, Yan, Qi and Zhao. However, there eventually was a shift in alliances because each state's ruler wanted independence. This caused hundreds of wars between 535 and 286 BC. The victorious state would have overall rule and control in China. The system of feudal states created by

5390-655: The booty of his conquest undamaged, and retain his men and equipment intact, for the price of a well-placed bribe to a disgruntled gatekeeper. The Assyrian siege of Jerusalem in the 8th century BC came to an end when the Israelites bought them off with gifts and tribute, according to the Assyrian account, or when the Assyrian camp was struck by mass death, according to the Biblical account. Due to logistics, long-lasting sieges involving

5488-468: The campaign had been fulfilled, the Hittite army returned to Carchemish and the city fell after an eight-day siege. Disease was another effective siege weapon, although the attackers were often as vulnerable as the defenders. In some instances, catapults or similar weapons were used to fling diseased animals over city walls in an early example of biological warfare . If all else failed, a besieger could claim

5586-520: The defence of the first cities in the ancient Near East . The walls were built of mudbricks, stone, wood, or a combination of these materials, depending on local availability. They may also have served the dual purpose of showing potential enemies the might of the kingdom. The great walls surrounding the Sumerian city of Uruk gained a widespread reputation. The walls were 9.5 km (5.9 mi) in length, and up to 12 m (39 ft) in height. Later,

5684-458: The defence of their outer borders or sea shores. Unlike the ancient Minoan civilization, the Mycenaean Greeks emphasized the need for fortifications alongside natural defences of mountainous terrain, such as the massive Cyclopean walls built at Mycenae and other adjacent Late Bronze Age (c. 1600–1100 BC) centers of central and southern Greece. Although there are depictions of sieges from

5782-609: The demands on stored food and water. During the Warring States period in China (481–221 BC), warfare lost its honorable, gentlemen's duty that was found in the previous era of the Spring and Autumn period , and became more practical, competitive, cut-throat, and efficient for gaining victory. The Chinese invention of the hand-held, trigger-mechanism crossbow during this period revolutionized warfare, giving greater emphasis to infantry and cavalry and less to traditional chariot warfare. The philosophically pacifist Mohists (followers of

5880-484: The diplomat Su Qin spent years visiting the courts of Yan, Zhao, Han, Wei, Qi and Chu and persuaded them to form a united front against Qin. In 318 BC all states except Qi launched a joint attack on Qin, which was not successful. King Hui of Qin died in 311 BC, followed by prime minister Zhang Yi one year later. The new monarch, King Wu , reigned only four years before dying without legitimate heirs. Some damaging turbulence ensued throughout 307 BC before

5978-401: The dukes Xian (384–362 BC), Xiao (361–338 BC) and Hui (338–311 BC) of Qin as hegemons, thereby in theory making Qin the chief ally of the court. However, in 325 the confidence of Duke Hui grew so great that he proclaimed himself "king" of Qin; adopting the same title as the king of Zhou and thereby effectively proclaiming independence from the Zhou dynasty. King Hui of Qin

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6076-527: The early 13th century, but did not become significant weapons for another 150 years or so. In early decades, cannons could do little against strong castles and fortresses, providing little more than smoke and fire. By the 16th century, however, they were an essential and regularized part of any campaigning army, or castle's defences. Warring States period The Warring States period in Chinese history ( c.  475  – 221 BC) comprises

6174-454: The enemy camp from an eruptor ( mu phao ); and when they get there a sound like a thunder-clap is heard, and flashes of light appear. If ten of these shells are fired successfully into the enemy camp, the whole place will be set ablaze... During the Ming dynasty (AD 1368–1644), the Chinese were very concerned with city planning in regards to gunpowder warfare. The site for constructing the walls and

6272-541: The field, he was unable to capture Rome itself. The legionary armies of the Roman Republic and Empire are noted as being particularly skilled and determined in siege warfare. An astonishing number and variety of sieges, for example, formed the core of Julius Caesar 's mid-1st-century BC conquest of Gaul (modern France). In his Commentarii de Bello Gallico ( Commentaries on the Gallic War ), Caesar describes how, at

6370-662: The final centuries of the Zhou dynasty ( c.  1046  – 256 BC), which were characterized by warfare, bureaucratic and military reform, and political consolidation. It followed the Spring and Autumn period and concluded with the wars of conquest that saw the state of Qin annex each of the other contender states by 221 BC and found the Qin dynasty , the first imperial dynastic state in East Asian history. While scholars have identified several different dates as marking

6468-490: The first night while laying siege to a city, the leader of the Mongol forces would lead from a white tent : if the city surrendered, all would be spared. On the second day, he would use a red tent: if the city surrendered, the men would all be killed, but the rest would be spared. On the third day, he would use a black tent: no quarter would be given. However, the Chinese were not completely defenseless, and from AD 1234 until 1279,

6566-403: The fortification's walls, could allow the attackers to fire down upon the defenders and also advance troops to the wall with less danger than using ladders. In addition to launching projectiles at the fortifications or defenders, it was also quite common to attempt to undermine the fortifications, causing them to collapse. This could be accomplished by digging a tunnel beneath the foundations of

6664-517: The help of rubber flaps or other materials. Stephen Francis Wyley A Dictionary of Military Architecture Fortification and Fieldworks from the Iron Age to the Eighteenth Century , Drawings by Steven Lowe This military base or fortification article is a stub . You can help Misplaced Pages by expanding it . Siege A siege ( Latin : sedere , lit.   'to sit')

6762-431: The house of Jiang, which had ruled Qi since the state's founding. The throne instead passed to the future King Wei , from the house of Tian. The Tian had been very influential at court towards the end of Jiang rule, and now openly assumed power. The new ruler set about reclaiming territories that had been lost to other states. He launched a successful campaign against Zhao, Wey and Wei, once again extending Qi territory to

6860-443: The improbably high numbers which he used for both the Mongols and the defenders do give one a sense of the large numbers of machines used at a single siege. Another Mongol tactic was to use catapults to launch corpses of plague victims into besieged cities. The disease-carrying fleas from the bodies would then infest the city, and the plague would spread, allowing the city to be easily captured, although this transmission mechanism

6958-439: The last remaining Jin territory between themselves, which marked the final end of the Jin state. In 370 BC, Marquess Wu of Wei died without naming a successor, which led to a war of succession. After three years of civil war, Zhao from the north and Han from the south invaded Wei. On the verge of conquering Wei, the leaders of Zhao and Han fell into disagreement about what to do with Wei, and both armies abruptly retreated. As

7056-467: The local tribes and began its expansion southwest to Sichuan . In 403 BC, the court of King Weilie of Zhou officially recognized Zhao, Wei and Han as immediate vassals, thereby raising them to the same rank as the other warring states. From before 405 until 383 BC the three Jins were united under the leadership of Wei and expanded in all directions. The most important figure was Marquess Wen of Wei (445–396 BC). In 408–406 BC he conquered

7154-529: The mainland, impregnable. The Macedonians built a mole , a raised spit of earth across the water, by piling stones up on a natural land bridge that extended underwater to the island, and although the Tyrians rallied by sending a fire ship to destroy the towers, and captured the mole in a swarming frenzy, the city eventually fell to the Macedonians after a seven-month siege. In complete contrast to Tyre, Sogdian Rock

7252-472: The medieval period, negotiations would frequently take place during the early part of the siege. An attacker – aware of a prolonged siege's great cost in time, money, and lives – might offer generous terms to a defender who surrendered quickly. The defending troops would be allowed to march away unharmed, often retaining their weapons. However, a garrison commander who was thought to have surrendered too quickly might face execution by his own side for treason. As

7350-442: The newly crowned King Min have him publicly executed to draw out the assassins. King Min complied with Su's request and killed him, putting an end to the first generation of Vertical alliance thinkers. King Min of Qi came to be highly influenced by Lord Mengchang , a grandson of the former King Wei of Qi . Lord Mengchang made a westward alliance with the states of Wei and Han . In the far west, Qin, which had been weakened by

7448-422: The period. They include: The eastward flight of the Zhou court in 771 BC marks the start of the Spring and Autumn period . No one single incident or starting point inaugurated the Warring States era. The political situation of the period represented a culmination of historical trends of conquest and annexation which also characterised the Spring and Autumn period. As a result, there is some controversy as to

7546-417: The philosopher Mozi ) of the 5th century BC believed in aiding the defensive warfare of smaller Chinese states against the hostile offensive warfare of larger domineering states. The Mohists were renowned in the smaller states (and the enemies of the larger states) for the inventions of siege machinery to scale or destroy walls. These included traction trebuchet catapults , 8-foot (2.4 m) high ballistas ,

7644-428: The principal city from communicating with other cities where they might expect aid. Secondly, refugees from these smaller cities would flee to the last stronghold. The reports from these cities and the streaming hordes of refugees not only reduced the morale of the inhabitants and garrison of the principal city, it also strained their resources. Food and water reserves were taxed by the sudden influx of refugees. Soon, what

7742-434: The siege was of a location on a coastline, from ships launched from the harbor of the location. The universal method for defending against siege is the use of fortifications, principally walls and ditches , to supplement natural features. A sufficient supply of food and water was also important to defeat the simplest method of siege warfare: starvation . On occasion, the defenders would drive 'surplus' civilians out to reduce

7840-447: The southwest. Development of this area took a long time but slowly added greatly to Qin's wealth and power. In 341 BC, Wei attacked Han. Qi allowed Han to be nearly defeated and then intervened. The generals from the Battle of Guiling met again ( Sun Bin and Tian Ji versus Pang Juan ), using the same tactic, attacking Wei's capital. Sun Bin feigned a retreat and then turned on the overconfident Wei troops and decisively defeated them at

7938-483: The states, recommending that the rulers put their respective ideas into use. These "lobbyists", such as Su Qin , who advocated vertical alliances, and Zhang Yi , who advocated horizontal alliances, were famous for their tact and intellect, and were collectively known as the School of Diplomacy , whose Chinese name ( 縱橫家 'the school of the vertical and horizontal') was derived from the two opposing ideas. Beginning in 334 BC

8036-615: The thickness of the walls in Beijing's Forbidden City were favoured by the Chinese Yongle Emperor (r. 1402–1424) because they were in pristine position to resist cannon volley and were built thick enough to withstand attacks from cannon fire. For more, see Technology of the Song dynasty . The introduction of gunpowder and the use of cannons brought about a new age in siege warfare. Cannons were first used in Song dynasty China during

8134-431: The title c.  703 BC . In 344 BC the rulers of Qi and Wei mutually recognized each other as kings: King Wei of Qi and King Hui of Wei , in effect declaring their independence from the Zhou court. This marked a major turning point: unlike those in the Spring and Autumn period , the new generation of rulers ascending the thrones in the Warring States period would not entertain even the pretence of being vassals of

8232-401: The use of deception or treachery to bypass defenses. Failing a military outcome, sieges can often be decided by starvation, thirst, or disease, which can afflict either the attacker or defender. This form of siege, though, can take many months or even years, depending upon the size of the stores of food the fortified position holds. The attacking force can circumvallate the besieged place, which

8330-529: The walls of Babylon , reinforced by towers, moats, and ditches, gained a similar reputation. In Anatolia , the Hittites built massive stone walls around their cities atop hillsides, taking advantage of the terrain. In Shang dynasty China, at the site of Ao, large walls were erected in the 15th century BC that had dimensions of 20 m (66 ft) in width at the base and enclosed an area of some 1,900 m (2,100 yd) squared. The ancient Chinese capital for

8428-534: The walls, and then deliberately collapsing or exploding the tunnel. This process is known as mining . The defenders could dig counter-tunnels to cut into the attackers' works and collapse them prematurely. Fire was often used as a weapon when dealing with wooden fortifications. The Roman Empire used Greek fire , which contained additives that made it hard to extinguish. Combined with a primitive flamethrower , it proved an effective offensive and defensive weapon. A sallying out might also occur with such weapons, or if

8526-448: The western side. Being in danger, Zhao called in Chu. As usual, Chu used this as a pretext to annex territory to its north, but the diversion allowed Zhao to occupy a part of Wei. This conflict marked the end of the power of the united Jins and the beginning a period of shifting alliances and wars on several fronts. In 376 BC, the states of Han, Wei and Zhao deposed Duke Jing of Jin and divided

8624-634: Was achieved. Some popular tales existed on how the cunning heroes succeeded in their sieges. The best-known is the Trojan Horse of the Trojan War , and a similar story tells how the Canaanite city of Joppa was conquered by the Egyptians in the 15th century BC. The Biblical Book of Joshua contains the story of the miraculous Battle of Jericho . A more detailed historical account from the 8th century BC, called

8722-404: Was captured by stealthy attack. Alexander used commando-like tactics to scale the cliffs and capture the high ground, and the demoralized defenders surrendered. The importance of siege warfare in the ancient period should not be underestimated. One of the contributing causes of Hannibal 's inability to defeat Rome was his lack of siege engines , thus, while he was able to defeat Roman armies in

8820-434: Was developed for use by besieging armies. Ladders could be used to escalade over the defenses. Battering rams and siege hooks could also be used to force through gates or walls, while catapults , ballistae , trebuchets , mangonels , and onagers could be used to launch projectiles to break down a city's fortifications and kill its defenders. A siege tower , a substantial structure built to equal or greater height than

8918-507: Was driven out of Qin. The remaining three allies, Qi, Wei and Han, attacked Qin, driving up the Yellow River below Shanxi to the Hangu Pass . After 3 years of fighting they took the pass and forced Qin to return territory to Han and Wei. They next inflicted major defeats on Yan and Chu. During the 5-year administration of Lord Mengchang, Qi was the major power in China. In 294, Lord Mengchang

9016-477: Was guided by his prime minister Zhang Yi , a prominent representative of the School of Diplomacy . He was followed in 323 BC by King Xuanhui of Han and King Yi of Yan , as well as King Cuo of the minor state Zhongshan. In 318 BC even the ruler of Song , a relatively minor state, declared himself king. Uniquely, while King Wuling of Zhao had joined the other kings in declaring himself king, he retracted this order in 318 BC, after Zhao suffered

9114-499: Was implicated in a coup d'état and fled to Wei. His alliance system collapsed. Qi and Qin made a truce and pursued their own interests. Qi moved south against the state of Song whilst the Qin General Bai Qi pushed back eastward against a Han/Wei alliance, gaining victory at the Battle of Yique . In 288, King Zhao of Qin and King Min of Qi took the title di ( 帝 'emperor'), of the west and east respectively. They swore

9212-450: Was moved east to Daliang to be out of the reach of Qin. In 354 BC, King Hui of Wei started a large-scale attack on Zhao. By 353 BC, Zhao was losing badly and its capital, Handan , was under siege. The state of Qi intervened. The famous Qi strategist, Sun Bin the great-great-great-grandson of Sun Tzu , the author of the Art of War , proposed to attack the Wei capital while the Wei army

9310-570: Was not known at the time. In 1346, the bodies of Mongol warriors of the Golden Horde who had died of plague were thrown over the walls of the Crimean city of Kaffa (now Feodosiya ) during the siege of Caffa . It has been speculated that this operation may have been responsible for the advent of the Black Death in Europe. The Black Death is estimated to have killed 30%–60% of Europe's population. On

9408-507: Was once a formidable undertaking became easy. The Mongols were then free to lay siege without interference of the field army, as it had been destroyed. At the siege of Aleppo , Hulagu used twenty catapults against the Bab al-Iraq ( Gate of Iraq ) alone. In Jûzjânî, there are several episodes in which the Mongols constructed hundreds of siege machines in order to surpass the number which the defending city possessed. While Jûzjânî surely exaggerated,

9506-404: Was short in Qin relative to the other states at the time, Shang enacted policies to increase its manpower. As Qin peasants were recruited into the military, he encouraged active immigration of peasants from other states into Qin as a replacement workforce; this policy simultaneously increased the manpower of Qin and weakened the manpower of Qin's rivals. Shang made laws forcing citizens to marry at

9604-471: Was tied up besieging Zhao. The strategy was a success; the Wei army hastily moved south to protect its capital, was caught on the road and decisively defeated at the Battle of Guiling . The battle is remembered in the second of the Thirty-Six Stratagems , "besiege Wei, save Zhao"—meaning to attack a vulnerable spot to relieve pressure at another point. Domestically, King Hui patronized philosophy and

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