More incidents from the Imjin War. These are taken from Firearms: A Global History to 1700 by Kenneth Chase. Bizarrely, Chase takes the typical position that bows were a superior battlefield weapon to firearms despite his book being full of evidence to the contrary. This quote by the Korean official Yu Song-nyong, for example, is pretty damning:
In the 1592 invasion, everything was swept away. Within a fortnight or a month the cities and fortresses were lost, and everything in the eight directions had crumbled. Although it was [partly] due to there having been a century of peace and the people not being familiar with warfare that this happened, it was really because the Japanese had the use of muskets that could reach beyond several hundred paces, that always pierced what they struck, that came like the wind and the hail, and with which bows and arrows could not compare.
The Japanese were in agreement that their musketry was a great advantage. One of the Japanese commanders wrote home in 1592:
Please arrange to send us guns and ammunition. There is absolutely no use for spears. It is vital that you arrange somehow to obtain a number of guns. Furthermore, you should certainly see to it that those person departing [for Korea] understand this situation. The arrangements for guns should receive your closest attention.
More from Yu Song-nyong:
However, the musket is a very intricate instrument, and very difficult to produce. The Jixiao xinshu [written by Qi Jiguang in 1560] says one month for boring the barrel is optimal- that is, one musket takes the labor of one person for one month before it is ready for use. The difficulty and expense are like that. In recent days, the muskets used by the supervisorate have all been captured Japanese weapons. There are not many and they frequently burst, becoming fewer by the day.
I wonder why the captured Japanese muskets were bursting. Maybe the Koreans, lacking instructors to teach them how to safely use the muskets, were overloading them with powder or were failing to fully seat the bullet against the powder.
Although the musket is superior to the bow and arrow, it is slow and clumsy when loading powder and shot, lighting the match, and aiming and shooting. As for advancing and withdrawing at will, responding to opportunities with leisure or haste, being convenient for both infantry and cavalry, and being suitable for all situations, then it is not equal to the bow and arrow.
When Yu Song-nyong talks about firearms being inconvenient for cavalry, keep in mind that he is talking about matchlock weapons. In Europe at this time, cavalry firearms were of the far more convenient snaphaunce or wheellock variety.
Today, the Japanese exclusively use muskets to attack fortifications. They can reach [the target] from several hundred paces away. Our country’s bows and arrows cannot reach them. At any flat spot outside the walls, the Japanese will build earthen mounds and “flying towers.” They look down into the fortifications and fire their bullets so that the people inside the fortifications cannot conceal themselves. In the end the fortifications are taken. One cannot blame [the defenders] for their situation.
When the Japanese invaded Korea for the second time, there were more firearms on both sides.
The Japanese vanguard of a hundred or more arrived under the fortifications. They fanned out and took cover in the fields in groups of three and five. They fired their muskets at the top of the fortifications for a while, then stopped. They left and then returned again. The men on the fortifications respond with [Chinese-style] “victory guns,” and the Japanese main body sent out skirmishers from a distance to engage them. They advanced cautiously so the guns fired but did not hit them, while the Japanese bullets hit the men on the fortifications, many of whom fell dead.
The combined Korean and Chinese army launched a failed attack on the Japanese base at Ulsan:
At the foot of the hill were rotting fields; our soldiers had no place to plant their feet. The Japanese used their guns from the loopholes, and every shot struck its target…. If [the besiegers] lay prone the guns could not reach them easily; if they stood up they had to move in a crouch to avoid [being shot]. And those who lay prone suffered from the mud that covered their knees. Night and day they surrounded the fortress, and the ice and snow cracked their skin.
The Japanese commander Asano Yukinaga wrote home to his father:
When the troops come [to Korea] from the province of Kai, have them bring as many guns as possible, for no other equipment is needed. Give strict orders that all men, even the samurai, carry guns.