This is an overview of Chinese siege weapons.
This is an overview of Chinese siege weapons.
Siege ladders were used starting from the Warring States period. A hinged folding ladder known as the "cloud ladder" was quite prominent. Originally it used a counterweight to unfold once within reach of the enemy walls, but the contraption proved to be too vulnerable, and switched to a simple pulling mechanism during the Song dynasty. The newer version had men pull on ropes from behind with the aid of a long pole to move the top ladder into position. Some ladders had a compartment built below it to house soldiers who provided covering fire with crossbows. [1]
Hook carts such as the fork and falcon carts were used to pull down parapets and the top part of walls to make it easier for ladders to access. Once attached, 50 to 100 men took hold of a rope and pulled until the wall came down. They were used as early as the Three Kingdoms period, as mentioned by Chen Lin:
The hook carts join the fray and the nine oxen turn and heave, bellowing like thunder, and furiously smash the towers and overturn the parapets... Then the flying ladders, movable overlooks, cloud pavilions and the buildings in the void are rolled forward into the breaches so that the attackers can swarm into the city. [2]
— Chen Lin
Various protective covers were used during a siege. The most typical were mobile screens and assault wagons. More complex contraptions such as plaited galleries were used for mining and filling in moats. [3]
Static observation towers such as the nest and watchtower carts were used to see into the city. [4] Static towers were also used in close proximity to enemy walls to rain down projectiles on the defenders. [5]
Mobile siege towers have been used in China since the 6th century BC. They were often called overlook carts, assault carts, or some combination of the two. [2] A typical mobile siege tower was five stories tall mounted on axles with two wheels on each side. The tower was pushed forward by men on the lowest storey or pulled by horses and oxen. [6]
The king of Wu mentioned it in a passage comparing land armies to the navy.
These days in training we use the (same) tactics of land armies for the best effect. Thus big wing ships correspond to the army's heavy chariots, small wing ships to their light chariots, stomach strikers to battering rams, castled ships to mobile assault towers and bridge ships to the light cavalry. [2]
— King of Wu (514 – 496 BC)
During the Tang dynasty, in the 783 siege of Fengtian, an assault cart 10 m (33 ft) tall was constructed, protected by layers of cowhide and equipped with leather bags of water to douse fires. It was used in an attempt to breach the city. The defenders managed to dig a trench in front of the siege engine, which tipped it over, and they burnt it and had it destroyed. [2]
In 1132, the Jurchen Jin dynasty constructed assault carts called "sky bridges" during the Siege of De'an, but failed to reach the enemy walls due to the use of long beams to push them away. [7]
The last recorded use of assault carts was in 1851 by the Taiping rebels to besiege Guilin after their first attempt with ladders failed. They mounted cannons on it to bombard the Qing soldiers manning the walls, but the tower was destroyed by a combination of burning oil and long poles wrapped in incendiary material at the ends. [2]
The Chinese ram used an iron-plated head. After the introduction of gunpowder it added a cannon as well. [3]
The traction trebuchet, also referred to as a mangonel in some sources, is an artillery weapon which derives from manpower its motive force, and was probably used by the Mohists starting from the 4th century BC. Descriptions of it can be found in the Mojing (compiled in the 4th century BC). It consisted of an arm and sling mounted on a wooden frame, sometimes with wheels. Attached to one end of the arm were pulling ropes for men to power the weapon. [8] In Chapter 14 of the Mojing, the traction trebuchet is described hurling hollowed out logs filled with burning charcoal at enemy troops. [2] Trebuchets mounted on wheels were said to have needed 200 men to pull each of them. [9]
By the Qin and Han dynasties, traction trebuchets were a common weapon used in both attack and defense. Later on in 617 Li Mi (Sui dynasty) constructed 300 trebuchets for his assault on Luoyang, in 621 Li Shimin did the same at Luoyang, and onward into the Song dynasty when in 1161, trebuchets operated by Song dynasty soldiers fired bombs of lime and sulphur against the ships of the Jin dynasty navy during the Battle of Caishi. [10]
"Whirlwind" and "four footed" trebuchets appeared during the Tang dynasty. The whirlwind trebuchet used a single vertical pole which could be rotated 360 degrees for increased versatility at the cost of projectile strength. The four footed trebuchets were essentially the same as the previous Warring States weapons, differentiated from the whirlwinds by specifying its stability and larger size. [11]
As defensive weapons, traction trebuchets were positioned behind city walls and guided by an "artillery observer" on the walls. Range was determined by the strength and number of men pulling. Increasing and decreasing range meant adding and removing men from the pulling ropes. [11]
The traction trebuchet continued to be used until the counterweight trebuchet was introduced in 1272 during the Mongol conquest of the Song dynasty. [11]
A military engineer of the Three Kingdoms period, Ma Jun, devised a device which threw large stones using a wheel. This device consisted of a drum wheel attached with a curved knife. When rotated, the stones which hung on the wheel would be cut loose by the knife and launched. It is not clear how well this device worked in practice. Successful tests with roof tiles instead of stones are mentioned, but according to Liang Jieming, this contraption never made it past the testing phase and could not have been possible with the available technology at the time. [2]
The introduction of the counterweight trebuchet in China is usually attributed to Muslim engineers during the Battle of Xiangyang in 1273, but it is possible that it was independently invented earlier in 1232 by the Jurchen Jin commander Qiang Shen. Qiang Shen invented a device called the "Arresting Trebuchet" which only needed a few men to work it, and could hurl great stones more than a hundred paces, further than even the strongest traction trebuchet. However no details on the construction of the machine are given. Qiang died the following year and no further references to the Arresting Trebuchet appear. [2] Even earlier, a Song officer, Wei Sheng, had invented a trebuchet in 1176 that could hurl stones and gunpowder projectiles some 200 paces. [12]
Qiang Shen furthermore invented a trebuchet called the 'Arresting Trebuchct' [E Pao], which was used to prevent [the enemy] from overrunning [his positions]. Only a few men were needed to work it, yet (with this engine] great stones could be hurled more than 100 paces, and there was no target which it did not hit right in the middle. [13]
The counterweight trebuchet, known as the Muslim trebuchet (or Huihui Pao) in China, replaced the traction version after its introduction in the late 13th century. Its greater range was however, somewhat countered by the fact that it had to be constructed at the site of the siege unlike traction trebuchets, which were easier to take apart and put back together again where necessary. [14]
The counterweight trebuchet remained in use in China for roughly two centuries, at which point it was well on its way to obsolescence. [15]
| Weapon | Crew | Projectile weight: kilograms (pounds) | Range: meters (feet) |
|---|---|---|---|
| Whirlwind trebuchet | 50 | 1.8 kg (4.0 lb) | 78 m (256 ft) |
| Crouching tiger trebuchet | 70 | 7.25 kg (16.0 lb) | 78 m (256 ft) |
| Four footed (one arm) trebuchet | 40 | 1.1 kg (2.4 lb) | 78 m (256 ft) |
| Four footed (two arm) trebuchet | 100 | 11.3 kg (25 lb) | 120 m (390 ft) |
| Four footed (five arm) trebuchet | 157 | 44.5 kg (98 lb) | 78 m (256 ft) |
| Four footed (seven arm) trebuchet | 250 | 56.7 kg (125 lb) | 78 m (256 ft) |
| Counterweight trebuchet | ? | ~86 kg (190 lb) | 200–275 m (656–902 ft) |
Large crossbows called "bed crossbows" were mounted on rectangular frameworks, often wheeled. Bowstaves were also sometimes combined to increase tension and initial velocity of the bolt. [16]
Large mounted crossbows known as "bed crossbows" were used as early as the Warring States period. Mozi described them as defensive weapons placed on top the battlements. The Mohist siege crossbow was described as humongous device with frameworks taller than a man and shooting arrows with cords attached so that they could be pulled back. By the Han dynasty, crossbows were used as mobile field artillery and known as "Military Strong Carts". [2] Around the 5th century AD, multiple bows were combined to increase draw weight and length, thus creating the double and triple bow crossbows. Tang versions of this weapon are stated to have obtained a range of 1,060 m (3,480 ft), which is supported by Ata-Malik Juvayni on the use of similar weapons by the Mongols in 1256. [17] According to Juvayni, Hulagu Khan brought with him 3,000 giant crossbows from China, for the siege of Nishapur, and a team of Chinese technicians to work a great 'ox bow' shooting large bolts a distance of 2,500 paces, which was used at the siege of Maymun Diz. [18] Constructing these weapons, especially the casting of the large triggers, and their operation required the highest order of technical expertise available at the time. They were primarily used from the 8th to 11th centuries. [19] The bed crossbow has been compared with the ballista elephant that can be seen on the bas-relief of the 13th century Bayon in Cambodia. [20]
Joseph Needham on the range of the triple-bow crossbow:
This range seems credible only with difficulty, yet strangely enough there is a confirmation of it from a Persian source, namely the historian 'Alā'al-Dīn al-Juwainī, who wrote of what happened when one of the almost impregnable castles of the Assassins was taken by Hulagu Khan. Here, in 1256, the Chinese arcuballistae shot their projectiles 2500 (Arab) paces 1,000 m (3,300 ft)) from a position on the top of some mountain... His actual words are: "and a kamān-i-gāu which had been constructed by Cathayan craftsmen, and which had a range of 2500 paces, was brought to bear on those fools, when no other remedy remained, and of the devil-like Heretics many soldiers were burnt by those meteoric shots". The castle in question was not Alamūt itself, but Maimūn-Diz, also in the Elburz range, and it was the strongest military base of the Assassins. [21]
— Joseph Needham
The multiple bolt crossbow appeared around the late 4th century BC. A passage dated to 320 BC states that it was mounted on a three-wheeled carriage and stationed on the ramparts. The crossbow was drawn using a treadle and shot 3 m (9.8 ft) long arrows. Other drawing mechanisms such as winches and oxen were also used. [22] Later on pedal release triggers were also used. [23] Although this weapon was able to discharge multiple bolts, it was at the cost of reduced accuracy. [2] It had a maximum range of 460 m (1,510 ft). [24]
When Qin Shi Huang's magicians failed to get in touch with "spirits and immortals of the marvellous islands of the Eastern Sea", they excused themselves by saying large monsters blocked their way. Qin Shi Huang personally went out with a multiple bolt crossbow to see these monsters for himself. He found no monsters but killed a big fish. [25]
In 99 BC, they were used as field artillery against attacking nomadic cavalry. [2]
In 759 AD, Li Quan described a type of multiple bolt crossbow capable of destroying ramparts and city towers:
The arcuballista is a crossbow of a strength of 12 dan, mounted on a wheeled frame. A winch cable pulls on an iron hook; when the winch is turned round until the string catches on the trigger the crossbow is drawn. On the upper surface of the stock there are seven grooves, the centre carrying the largest arrow. This has a point 275 cm (108 in) long and 125 cm (49 in) round, with iron tail fins 125 cm (49 in) round, and a total length of 91.5 cm (36.0 in). To left and right there are three arrows each steadily decreasing in size, all shot forth when the trigger is pulled. Within 700 paces (525 m (1,722 ft)) whatever is hit will collapse, even solid things like ramparts and city towers." [2]
— Li Quan
In 950 AD, Tao Gu described multiple crossbows connected by a single trigger:
The soldiers at the headquarters of the Xuan Wu army were exceedingly brave. They had crossbow catapults such that when one trigger was released, as many as 12 connected triggers would all go off simultaneously. They used large bolts like strings of pearls, and the range was very great. The Jin people were thoroughly frightened by these machines. Literary writers called them Ji Long Che (Rapid Dragon Carts; 疾龙车). [2]
— Tao Gu
The weapon was considered obsolete by 1530. [23]
| Weapon | Shots per minute | Range: meters (feet) |
|---|---|---|
| Chinese composite bow | 150 m (490 ft) | |
| Manchu bow | 180–230 m (590–750 ft) | |
| Chinese crossbow | 170–450 m (560–1,480 ft) | |
| Cavalry crossbow | 150–300 m (490–980 ft) | |
| Repeating crossbow | 28–48 | 73–180 m (240–591 ft) |
| Double shot repeating crossbow | 56–96 | 73–180 m (240–591 ft) |
| Weapon | Crew | Shots per minute | Range: meters (feet) |
|---|---|---|---|
| Mounted multi-bolt | 6–12 | 365–460 m (1,198–1,509 ft) | |
| Mounted single-bow | 250–500 m (820–1,640 ft) | ||
| Mounted double-bow | 4–7 | 350–520 m (1,150–1,710 ft) | |
| Mounted triple-bow | 20–30 | 1,060 m (3,480 ft) |
Prior to the introduction of gunpowder, fire arrows used mineral oil and sulphur as incendiaries. They were most commonly used by defenders to burn enemy siege engines such as ladders and rams. They were also used to create fires in defending cities. [26]
When gunpowder arrived in the 10th century, fire arrows switched to gunpowder incendiaries. Production of gunpowder and fire arrows heavily increased in the 11th century as the court centralized the production process, constructing large gunpowder production facilities, hiring artisans, carpenters, and tanners for the military production complex in the capital of Kaifeng. One surviving source from c. 1023 lists all the artisans working in Kaifeng while another notes that in 1083 the imperial court sent 100,000 gunpowder arrows to one garrison and 250,000 to another. [27] When the Jin captured Kaifeng in 1126 they captured 20,000 fire arrows for their arsenal. [28]
Gunpowder was also used in fire balls launched by trebuchets. "Barbed fire balls" used a series of hooks to latch onto its target. A "molten metal bomb" also saw use during the Jin siege of Kaifeng in 1126. These were ceramic containers filled with molten metal kept in a mobile furnace. [29]
Fire birds were a form of live delivery system for incendiaries. A walnut sized piece of burning tinder was tied to the birds' neck or leg. The idea was that once released, they would settle on the roofs of the enemy city, setting fire to the thatch. [30]
The fire ox was another live delivery system. The ox was let loose with two spears attached to its sides and an incendiary tied to its behind. Later on a delayed-action bomb was also added. [31]
Around 900, Greek fire entered the Chinese arsenal. The flamethrower consisted of a brass container and a horizontal pump connected to the gunpowder ignition chamber. When pushed, the pump caused burning petrol to squirt out. It was recommended that these devices be placed on the walls so that when rolls of straw were thrown at siege engines, they would be ignited by the petrol fire. Flamethrowers were also used at sea, sometimes disastrously. In 975, the commander of Southern Tang's navy panicked when enemy ships assaulted them with a barrage of arrows. In desperation, he projected petrol from flamethrowers at the enemy, but a sudden northern wind blew the flames in the opposite direction, setting his entire fleet ablaze. The commander jumped into the fire and died. [32]
Gas bombs consisting of gunpowder mixed with various poisons wrapped in hemp and moxa were used as defensive weapons. These were said to cause great discomfort in the enemy, having effects such as bleeding from the mouth and nose. Other than poison, lime and excrement were also used for their noxious and blinding properties. [33]
A crossbow is a ranged weapon using an elastic launching device consisting of a bow-like assembly called a prod, mounted horizontally on a main frame called a tiller, which is hand-held in a similar fashion to the stock of a long gun. Crossbows shoot arrow-like projectiles called bolts or quarrels. A person who shoots crossbow is called a crossbowman or an arbalist.
A catapult is a ballistic device used to launch a projectile a great distance without the aid of gunpowder or other propellants – particularly various types of ancient and medieval siege engines. A catapult uses the sudden release of stored potential energy to propel its payload. Most convert tension or torsion energy that was more slowly and manually built up within the device before release, via springs, bows, twisted rope, elastic, or any of numerous other materials and mechanisms.
A trebuchet is a type of catapult that uses a rotating arm with a sling attached to the tip to launch a projectile. It was a common powerful siege engine until the advent of gunpowder. The design of a trebuchet allows it to launch projectiles of greater weights and further distances than that of a traditional catapult.
The Battle of Xiangyang was a protracted series of battles between the Yuan dynasty and the Southern Song dynasty from 1267 to 1273. The battle was a significant victory for the Yuan dynasty and ended a 30-year defensive campaign waged by the Southern Song dynasty, allowing Yuan forces to advance into the Southern Song heartland. The capture of Xiangyang also allowed the Yuan dynasty to take control of the Han and Yangtze rivers, thereby depriving the Southern Song dynasty of two formidable natural barriers. The defeat devastated the Southern Song dynasty, which collapsed several years later at the Battle of Yamen.
The mangonel, also called the traction trebuchet, was a type of trebuchet used in Ancient China starting from the Warring States period, and later across Eurasia by the 6th century AD. Unlike the later counterweight trebuchet, the mangonel operated on manpower-pulling cords attached to a lever and sling to launch projectiles.
A siege engine is a device that is designed to break or circumvent heavy castle doors, thick city walls and other fortifications in siege warfare. Some are immobile, constructed in place to attack enemy fortifications from a distance, while others have wheels to enable advancing up to the enemy fortification. There are many distinct types, such as siege towers that allow foot soldiers to scale walls and attack the defenders, battering rams that damage walls or gates, and large ranged weapons that attack from a distance by launching projectiles. Some complex siege engines were combinations of these types.
The repeating crossbow, also known as the repeater crossbow, and the Zhuge crossbow due to its association with the Three Kingdoms-era strategist Zhuge Liang (181–234 AD), is a crossbow invented during the Warring States period in China that combined the bow spanning, bolt placing, and shooting actions into one motion.
During the Mongol invasions and conquests, which began under Genghis Khan in 1206–1207, the Mongol army conquered nearly all of continental Asia, including parts of the Middle East, and parts of Eastern Europe. The efforts of Mongol troops and their allies enabled the Mongol Empire to become the contemporarily largest polity in human history. Today, the former Mongol Empire remains the world's largest polity to have ever existed in terms of contiguous land area and the second-largest polity overall, behind only the British Empire.
Fire arrows were one of the earliest forms of weaponized gunpowder, being used from the 9th century onward. Not to be confused with earlier incendiary arrow projectiles, the fire arrow was a gunpowder weapon which receives its name from the translated Chinese term huǒjiàn (火箭), which literally means fire arrow. In China a 'fire arrow' referred to a gunpowder projectile consisting of a bag of incendiary gunpowder attached to the shaft of an arrow. Fire arrows are the predecessors of fire lances, the first firearm.
The hwacha or hwach'a was a multiple rocket launcher and an organ gun of similar design which were developed in fifteenth century Korea. The former variant fired one or two hundred rocket-powered arrows while the latter fired several dozen iron-headed arrows or bolts out of gun barrels. The term was used to refer to other war wagons or other cart-based artillery in later periods, such as that developed by Byeon Yijung in the 1590s.
The Battle of Tangdao (唐岛之战) was a naval engagement that took place in 1161 between the Jurchen Jin and the Southern Song dynasty of China on the East China Sea. The conflict was part of the Jin-Song wars, and was fought near Tangdao Island. It was an attempt by the Jin to invade and conquer the Southern Song dynasty, yet resulted in failure and defeat for the Jurchens. The Jin dynasty navy was set on fire by huopao and fire arrows, suffering heavy losses. For this battle, the commander of the Song dynasty squadron, Li Bao, faced the opposing commander Zheng Jia, the admiral of the Jin dynasty. On the fate of Zheng Jia, the historical text of the Jin Shi states:
Zheng Jia did not know the sea routes well, nor much about the management of ships, and he did not believe. But all of a sudden they appeared, and finding us quite unready they hurled incendiary gunpowder projectiles on to our ships. So seeing all his ships going up in flames, and having no means of escape, Zheng Jia jumped into the sea and drowned.
The Wujing Zongyao, sometimes rendered in English as the Complete Essentials for the Military Classics, is a Chinese military compendium written from around 1040 to 1044.
Gunpowder is the first explosive to have been developed. Popularly listed as one of the "Four Great Inventions" of China, it was invented during the late Tang dynasty while the earliest recorded chemical formula for gunpowder dates to the Song dynasty. Knowledge of gunpowder spread rapidly throughout Asia and Europe, possibly as a result of the Mongol conquests during the 13th century, with written formulas for it appearing in the Middle East between 1240 and 1280 in a treatise by Hasan al-Rammah, and in Europe by 1267 in the Opus Majus by Roger Bacon. It was employed in warfare to some effect from at least the 10th century in weapons such as fire arrows, bombs, and the fire lance before the appearance of the gun in the 13th century. While the fire lance was eventually supplanted by the gun, other gunpowder weapons such as rockets and fire arrows continued to see use in China, Korea, India, and this eventually led to its use in the Middle East, Europe, and Africa. Bombs too never ceased to develop and continued to progress into the modern day as grenades, mines, and other explosive implements. Gunpowder has also been used for non-military purposes such as fireworks for entertainment, or in explosives for mining and tunneling.
The thunder crash bomb, also known as the heaven-shaking-thunder bomb, was one of the first bombs or hand grenades in the history of gunpowder warfare. It was developed in the 12th-13th century Song and Jin dynasties. Its shell was made of cast iron and filled with gunpowder. The length of the fuse could be adjusted according to the intended throwing distance.
It is not clear where and when the crossbow originated, but it is believed to have appeared in China and Europe around the 7th to 5th centuries BC. In China the crossbow was one of the primary military weapons from the Warring States period until the end of the Han dynasty, when armies were composed of up to 30 to 50 percent crossbowmen. The crossbow lost much of its popularity after the fall of the Han dynasty, likely due to the rise of the more resilient heavy cavalry during the Six Dynasties. One Tang dynasty source recommends a bow to crossbow ratio of five to one as well as the utilization of the countermarch to make up for the crossbow's lack of speed. The crossbow countermarch technique was further refined in the Song dynasty, but crossbow usage in the military continued to decline after the Mongol conquest of China. Although the crossbow never regained the prominence it once had under the Han, it was never completely phased out either. Even as late as the 17th century AD, military theorists were still recommending it for wider military adoption, but production had already shifted in favour of firearms and traditional composite bows.
Gunpowder weapons in the Song dynasty included fire arrows, gunpowder lit flamethrowers, soft shell bombs, hard shell iron bombs, fire lances, and possibly early cannons known as "eruptors". The eruptors, such as the "multiple bullets magazine eruptors", consisting of a tube of bronze or cast iron that was filled with about 100 lead balls, and the "flying-cloud thunderclap eruptor", were early cast-iron proto-cannons that did not include single shots that occluded the barrel. The use of proto-cannon, and other gunpowder weapons, enabled the Song dynasty to ward off its generally militarily superior enemies—the Khitan led Liao, Tangut led Western Xia, and Jurchen led Jin—until its final collapse under the onslaught of the Mongol forces of Kublai Khan and his Yuan dynasty in the late 13th century.
The siege of De'an (德安之戰) was fought as part of the Jin-Song Wars of China in 1132, during the Jin invasion of Hubei and Shaanxi. The battle between the besiegers, a group of rebels led by Li Heng and the Song Chinese defenders is important in global history as the first recorded instance of the fire lance, an early ancestor of firearms, being used in battle.
Hu dun pao (虎蹲砲) is the name of two different missile weapons in Chinese history. In the Song dynasty (960–1279), it was a trebuchet and its name is translated into English as Crouching Tiger Trebuchet; in the Ming dynasty (1368–1644), the name was given to a type of bombard and it is known in English as Crouching Tiger Cannon.
The Ming dynasty continued to improve on gunpowder weapons from the Yuan and Song dynasties as part of its military. During the early Ming period larger and more cannons were used in warfare. In the early 16th century Turkish and Portuguese breech-loading swivel guns and matchlock firearms were incorporated into the Ming arsenal. In the 17th century Dutch culverin were incorporated as well and became known as hongyipao. At the very end of the Ming dynasty, around 1642, Chinese combined European cannon designs with indigenous casting methods to create composite metal cannons that exemplified the best attributes of both iron and bronze cannons. While firearms never completely displaced the bow and arrow, by the end of the 16th century more firearms than bows were being ordered for production by the government, and no crossbows were mentioned at all.
The military history of the Song dynasty encompasses military activity of the Han Chinese state of Song from 960 AD with the overthrow of Later Zhou until 1279 AD when China was conquered by the Mongol-led Yuan dynasty.