Practice English Speaking&Listening with: Gunpowder Technology of the Mongol Army

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The rapid expansion of the Mongol Empire in the thirteenth century cannot be attributed

to a single new military invention providing technological supremacy over their enemies.

Still, the Mongols were adept in employing the tools of their foes.

As historian Timothy May wrote, the Mongols rarely met a weapon they did not like.

In todays entry in our series on the Mongol army, we will examine the Mongol Empires

use of and possible role in the transmission in gunpowder and gunpowder weapons over the

13th and 14th centuries.

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For some historians, like J.J.

Saunders or Kate Raphael, the idea of the Mongols as both users of gunpowder and transmitters

of its knowledge to the west is a total negative or extremely unlikely.

But the great British sinologist Joseph Needham demonstrated thoroughly that the Mongols used

a variety of gunpowder weapons during their wars in China, while more recent historians

such as Iqtidar Alam Khan, Thomas T. Allsen and Stephen G. Haw, have argued that the Mongols

carried a number of gunpowder weapons, such as bombs, fire-lances and rockets, west in

their conquests over the rest of Eurasia.

The first recipe for gunpowder appears during the Tang Dynasty in the 8th century CE, in

a Taoist work urging alchemists not to mix saltpetre (potassium nitrate), sulphur and

carbon-rich materials like coal, and to especially not add arsenic to the mixture, as the result

would light aflame.

The Chinese quickly found the energy produced by these materials quite mesmerizing when

used in fireworks display, and in civil engineering projects and mining.

Contrary to some popular sentiments that the Chinese only used it for peaceful purposes,

it did not take long for it to be turned to warfare.

By 1044, possibly in reaction to military defeats against the Tangut Xi Xia, the Song

Dynasty was presented a collection of nine kinds of gunpowder weapons and three distinct

gunpowder recipes in the Wujing Zongyao.

This technology advanced under the Song Dynasty, which faced a collection of ever-more fearsome

foes on its northern borders.

These weapons took a number of forms . Bombs thrown from catapults (huopao), enclosed in

pottery or fragmenting metal shells.

Arrows (huojian) with incendiary packages strapped to them, launched from bows or massive

mounted crossbows, developing into early rockets over the twelfth century.

Most infamous was the fire-lance (huojiang): a bamboo or metal tube capable of shooting

a jet of flame three metres in length, sometimes with shrapnel and toxic materials packed into

the tube to form a terrifying, flame-spouting shotgun . some to explode and throw armour

piercing shrapnel, some to spread flame and destroy buildings, with others to have a choking,

blinding gas dispersed by the explosion to envelop and confuse the enemy.

The Song Dynasty government was so terrified of their foes acquiring them- that it prohibited

the sale of any of the materials composing gunpowder to the Khitan Liao Dynasty or Tangut

Xi Xia in the 11th century.

Both lacked access to natural reserves of saltpetre producing lands.

But with the Jurchen conquest of the Liao and Northern Song in the early 12th century,

the newly formed Jin Dynasty seized not only stores of these weapons, but the knowledge

and resources to produce their own.

The first textual references to fire-lances, rockets, and new kinds of bombs appear as

Song forces desperately resisted Jin invasions.

When Chinggis Khan invaded the Jin Dynasty in 1211, whole companies of Chinese siege

engineers entered into his service , bringing with them knowledge to construct Chinese siege

machines.

One such Chinese siege specialist who willingly deserted, Guo Baoyu, accompanied Chinggis

Khan west on his campaign against the Khwarezmian Empire.

According to his biography in the Yuanshi, when the Mongols attempted to force a crossing

of the Amu Darya, a number of Khwarezmian ships blocked their path.

Guo Baoyu ordered a volley of huojian to be launched against the fleet.

The ships were all set aflame, allowing the Mongols passage.

While huojian originally and literally meant fire arrows, according to Joseph Needham,

Jixing Pan, and Thomas Allsen, over the twelfth century the term came to signify rockets,

when powdered gunpowder mixtures with higher percentages of saltpetre, charcoal and less

sulphur made for effective rocket propellants .

While Chinggis Khan certainly brought Chinese siege engineers westwards with him, gunpowder

was not a key component of his tactics.

Likely, Chinggis lacked the resources to manufacture gunpowder and gunpowder weapons, and if he

was making use of them, it was in limited quantities and quickly depleted.

After Chinggis Khans death in 1227, his son and successor Ogedai completed the war

with the Jin Dynasty, in the process acquiring greater experience with gunpowder weapons,

as well as the natural and manpower resources to produce them.

In 1231, for instance, the Jin utilized a new development in bomb technology, the heaven-shaking

thunder-bomb (zhen tien lei), to sink Mongol ships in a naval engagement.

These were bombs with high nitrate content encased in a cast-iron shell.

When set off, they created a monstrous noise like thunder, splintering the iron shell into

a wave of armour and flesh tearing shrapnel, an early fragmentation grenade.

In 1232, the great Mongol general Subedei besieged the Jin capital of Kaifeng, in a

year-long siege in which both sides utilized gunpowder weapons.

Subedeis catapults launched bombs into the city, while the Jin defenders annihilated

mobile shelters pushed up to the walls by dropping thundercrash bombs on them via an

iron chain.

The defenders also employed a number of flying-fire-spears (feihuojiang).

Depending on the interpretation, these were fire-lances packed with wads of shrapnel and

arrows which when fired acted like a flaming shot gun, while others like Jixing Pan suggest

these were rockets.

At one point in the siege, a Jin commander took 450 men armed with flying fire-lances

into the Mongol encampment, a surprise attack resulting in hundreds of Mongol troops killed

or drowned then they tried to flee.

It was remarked that the thundercrash bombs and flying-fire-lances were the only two weapons

the Mongols feared.

Yet, these devices could not arrest the fate of the dynasty .

The reliability of these weapons was questionable.

Different proportions of the chemicals, might result in a device going off early, too late,

or not at all.

The range of these weapons was short, and they were best utilized in the defense, in

situations where their effect on enemy morale could be maximized.

These bombs were not yet the secret to destroying city walls, though they could damage wooden

structures, towers or gates along the battlements.

Regardless, they were a frightful weapon when used properly.

Thus it seems unusual that Subedei, the commander of the final campaigns against the Jin who

faced these gunpowder weapons, made little use of them in the great western campaign

begun a few years later.

Though specialized Chinese artillery was employed against the Alans of the north Caucasus, Rus

principalities and Hungarians, there is little direct indication of the use of gunpowder

weaponry in the west.

Many of the mostly wooden cities of the Rus principalities were burned, but the Rus

sources generally offer no description of how this occurred.

A possible indication is supplied by the Franciscan friar John de Plano Carpini, who travelled

through the Rus principalities late in the 1240s bearing messages from the Pope to

the Great Khan.

In his report Carpini very accurately describes Mongol battle and siege tactics, with the

intention that his observations would help prepare Christendom against further attacks.

He wrote that the Mongols threw Greek fire onto cities, in addition to melted down fat

from prisoners, a combination which was very difficult to extinguish.

As the Mongols, as far as is known, did not use Greek Fire, it seems that Carpini attempted

to describe an incendiary of unusual properties using cultural terms he was familiar with.

As Carpinis knowledge of Mongol siege tactics came from survivors in the Rus territories,

it seems to imply that a special type of fire-causing weapon was used against the Rus: quite

possible gunpowder weapons Subedei had brought from China.

The famous smoke screen employed by Mongol forces at the battle of Liegnitz in Poland

in April 1241 may also have been a type of gunpowder weapon, as suggested by Stephen

Haw.

Devices to deploy toxic smoke and smoke screens have been used in Chinese warfare since at

least the 4th century CE, but during the Song Dynasty more effective versions were developed

with gunpowder.

In easily shatterable pottery containers, these weapons were packed with poisons, foul-smelling

ingredients, shrapnel, arsenic and lime.

Dispersed by the force of the explosion, these bombs unleashed a cloud or fog of painful

gas which blinded, disoriented and confused enemy forces- very similar to the smoke weapon

described at Liegnitz.

Not understanding it was a gunpowder weapon, either a bomb via a small catapult or modified

fire-lance, the Poles focused on the most visible tool as the origins of the smoke,

mistakenly identifying a Mongolian horse-hair standard as the device .

Lacking words for these new devices, which the Mongols were unwilling to let non-military

individuals examine, it is hard to determine when a medieval author is using a familiar

term, such as Greek Fire or Naptha, to refer to a new technology which served a similar

purpose.

In some cases, it is even hard to tell if it is just a dramatic description.

Such is the case of the Persian writer Juvainis account of Hulegus campaign in the 1250s,

to which he was a direct eye-witness.

Juvaini writes of how Hulegu was provided by his brother, the Grand Khan Mongke, a thousand

households of Chinese catapultmen, as well as naptha throwers.

At the siege of the Nizari Assassin fortress of Maymun Diz, Juvaini mentions a large crossbow-like

weapon deployed by Hulegus Chinese siege engineers, which he called an ox-bow , a direct

translation of the Chinese term for the weapon ba niu nu.

Juvaini writes that it delivered meteoric shafts which burnt the enemy, in comparison

to stones lobbed by the defenders, which did little but harm a single person.

These ox-bows in Chinese warfare, as described by the Wujing Zongyao, could have gunpowder

packages attached to the bolts, and were used in the same manner as Juvaini describes.

While some historians like Stephen Haw see this as a clear usage of gunpowder, it must

be remarked that Juvainis tendency for over-flowery language makes it difficult to

gauge how literal this passage must be taken, though he was an eye-witness to the siege.

Generally it seems that gunpowder was little used in the Mongols western campaigns.

Likely difficulties in travelling with it prevented them from taking great quantities

of it, and at the time of the conquests there was not sufficient knowledge in the west that

allowed them to procure more supplies.

The matter was very different in the continuing Mongol wars in China, where under Khubilai

Khan bombs were a main component of the wars against the Song Dynasty, which also employed

them.

Thousands of bombs were made every month in the Song Dynasty, though getting them to where

they needed to be was another matter.

One Song official in 1257 inspecting the border arsenals lamented how poorly supplied these

vulnerable sites were in these weapons, and how repeated requests to the central government

were fruitless.

The Song continued to throw whatever they could against the Mongols as they advanced

deeper into southern China, but by then the Mongols not only had ample supplies of these

weapons for war in China, but manpower reserves, a powerful military structure and a leadership

hell-bent on overrunning the south, driven by the energetic Khubilai who believed in

the eventuality of his conquest.

Khubilais great general Bayan set up ranks upon ranks of huopao during his drive to Hangzhou,

lobbing stones to pound down the walls, gunpowder bombs to annihilate gates and towers and terrify

the defenders within.

Against such an implacable foe, the last of Song resistance was ground to dust .

It appears that an advance in gunpowder weapons was made sometime in the late thirteenth century.

Near the ruins of Khubilais summer capital of Shangdu, the earliest confirmed cannon

has been found.

Bearing a serial number and an inscription in the Phags-pa script dating it to 1298,

weighing 6 kilograms (13 lb 11 oz) and just under 35 cm (approx.

14 in) in length, it suggests a product of considerable experimentation and systemization.

Much more primitive and rougher versions have been found that seem to date to the last years

of the Tangut Xi Xia Dynasty, crushed in 1227 by Chinggis Khan.

It is probable that the evolution of fire-lances from bamboo to metal tubes was a stepping

stone to larger metal tubes capable of larger gunpowder charges and projectiles, brought

on by the emergency of the Mongol invasions.

Only in the last years of the 13th century did these models reach a level of standardization

and sophistication to become true bombards, and more and more sophisticated models are

known from over the fourteenth century.

There are a few passages from 13th and 14th century Chinese texts which may indicate the

usage of these cannons, usually in naval engagements; where muzzle flashes seem to be described

when Mongol ships fire upon fleeing Jin ships, or with small vessels at the blockade of Xiangyang

bearing huopao, but from ships too small for catapult.

Much like the western texts, the Chinese did not yet have a name for this new technology

though.

Calling them huopao, the same name for the catapults which threw gunpowder bombs, it

is impossible to know, unless a description is given, which texts refer to bombs, and

which to early cannons.

From 1288 we have perhaps the earliest description of small hand-held guns or cannons.

In the war against his rebel cousin Nayan, Khubilai Khan led his army against Nayan himself,

but attacked from multiple fronts.

One such operation was led by a Jurchen commander in Khubilais service, Li Ting.

Using the word for fire-catapult or cannon, huopao, Li Ting and his small squad of Korean

soldiers one night snuck into an encampment of Nayans men in Manchuria and set off

these weapons to great effect.

From the context, it is clear that these weapons are too small and mobile to be catapults.

In further support of this interpretation, it appears one of these actual weapons was

found.

Discovered in 1970 in Heilongjiang province, near where Li Tings troops fought Nayan,

a small bronze cannon or handgun has been discovered from an archaeological site supporting

a late thirteenth century context.

Weighing 3 and a half kilograms, 34 cm in length, with a bore of 2 and a half centimeters,

these were small, anti-personnel weapons.

Not much use against walls, but devastating against men and horses.

The Yuan Dynasty continued to produce cannon over the fourteenth century.

One well known example from 1332 bears an inscription with its date and purpose of manufacture,

intended to be used on board a ship for suppression of rebels.

By the rise of Zhu Yuanzhang and the Ming Dynasty in the late fourteenth century, cannons

and other firearms were standard features of Chinese armies.

So did the Mongols spread gunpowder westwards?

Recipes for gunpowder and even the first gunpowder weapons appear in Europe, the Islamic World

and India late in the thirteenth century and early fourteenth centuries, after the Mongol

expansions.

However, the diffusion is difficult to track due to the already mentioned ambiguities in

terminology.

Its likely the Mongol armies did not travel with great quantities of powder and were reluctant

to share its knowledge.

It is notable though that when perhaps the earliest recipe for gunpowder is recorded

in Arabic in 1280 by Hasan al-Rammah, he records the ingredients as being Chinese in origin,

with saltpetre for instance called Chinese snow, or rockets as Chinese arrows.

A common word for gunpowder in Arabic and Persian meant drug , a literal translation

of the Chinese huoyao, fire-drug which implies that knowledge was transmitted directly from

Chinese engineers in Mongol service.

By the start of the fourteenth century, fireworks appear as objects of regular entertainment

in the Ilkhanate.

Many diplomats, travellers, priests and merchants made the trek from Europe across the Mongol

Empire and back, and many brought gifts from the Khans with them, or observed closely the

Mongol army in an attempt to learn its secrets.

The Franciscan friar, William of Rubruck, spent time with a European goldsmith in Mongol

service, William Buchier, the man who made the famous Silver Tree of Karakorum.

Buchier appears to have worked often in conjunction with Chinese artisans in his work for the

Mongols.

Though Rubruck does not describe gunpowder, he did meet, while back in Paris, the first

European who did: Roger Bacon, who later describes with amazement his experience viewing Chinese

firecrackers going off in Europe.

Even if the Mongol army itself did not directly or intentionally transfer gunpowder, or use

it in quantities to replace their own bows and arrows, they opened the pathways that

allowed its knowledge to move across the Eurasian continent.

Over the early decades of the fourteenth century, fearsome hand guns and bombards became regular

features of battlefield across the continent, the secret to gunpowder no longer restricted

to Chinese dynasties.

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The Description of Gunpowder Technology of the Mongol Army