North Korean 'super rocket' terrified Japanese samurai in 15th century

DNUM_DAZBCZCABH 07:00

A hwacha rocket launcher was capable of firing 50 large arrows at once, penetrating many of the best protective armors of the 15th century.

14th Century Korean Rocket Launcher That Terrified Japanese Samurai

Hwacha system firing test

In the late 14th century, the Joseon Dynasty of Korea launched an espionage campaign to obtain secret Chinese gunpowder and rocket technology to fight against Japanese pirates. This campaign helped Korea develop the hwacha "super rocket" that would be the nightmare of pirates and Japanese samurai armies in the 15th century, according to War is Boring.

During this period, China was the world leader in gunpowder technology. However, the rockets it produced at that time were too inaccurate, difficult to cause damage, and were often used only to scare the horses of the enemy cavalry. In addition, China was not willing to share technology with North Korea, despite the long-standing friendly relationship between the two countries.

In 1377, a Chinese merchant agreed to ship a batch of gunpowder manufacturing manuals and samples to Korea, while inventor Choe Mu-seon discovered a way to synthesize gunpowder from soil. The resulting technology helped Korea develop a variety of explosive weapons such as rockets, cannons, and matchlocks. From 1380, Korea began using these weapons to destroy pirates in naval battles.

The Korean expeditionary fleet completely destroyed the Japanese pirate force in 1419 with the powerful support of hwacha rockets, one of the world's first multiple rocket launcher systems.

Hwacha is a product of two inventors.Yi Do and Choi Hae-san developed it. They believe that it is difficult for a single missile to hit a target due to its low accuracy, but launching dozens to hundreds of arrows at the same time will ensure that everything in sight is destroyed. This missile system uses a Chinese design, but can launch 50-100 arrows at the same time, far surpassing the system developed by China.

Each hwacha complex is mounted on two wheels for increased mobility. The launcher consists of dozens of tubes placed in rows, inside which can hold 1.1 m long arrows with paper tubes filled with propellant near the tip. The arrows are all connected by slow-burning fuses, allowing them to be fully fired in 2-3 seconds with just one ignition.

Bệ phóng hwacha cùng mũi tên gắn ống thuốc súng. Ảnh: Wikipedia.

Hwacha launcher with gunpowder tube arrow. Photo: Wikipedia.

The hwacha was made of wood, making it much more maneuverable than the cast iron cannons of the time, while the crew required only four men. The hwacha had an effective range of about 100-150 m, and tests showed that the heavy arrows were capable of penetrating all types of armor and shields at this distance. The range of the hwacha could be increased to 300-500 m if fired from a high position and using light arrows.

Contemporary artillery was used in siege warfare, but hwacha were used against infantry to defend the Joseon Dynasty's strongholds. Korea deployed at least 130 hwacha around Seoul and its northern border to prevent raids by the Jurchen tribe.

The North Korean military also mounted the weapon on panokseon warships, which were typically 20-30 meters long and had flat bottoms for use in shallow waters close to shore. The hwacha was small and light enough to maneuver on deck, providing firepower from all directions.

Nightmare for Japanese Samurai

In 1592, Japanese warlord Toyotomi Hideyoshi sent 158,000 troops to attack Korea, starting the Imjin War. Toyotomi's goal was to conquer China, but the Joseon court refused to let the Japanese army pass, prompting the Japanese warlord to organize an invasion of Korea.

The Ming Dynasty allied with the Joseon army to push the Japanese army out of Pyongyang and launched an attack to regain control of Seoul. However, the attack failed, the Ming expeditionary force was defeated, and the task of retaking Seoul became the responsibility of the Korean army.

By February 1593, General Kwon Yul had assembled an army of 2,300 men at the ancient fortress of Haengjiu, which had only one approach and was about 10 kilometers from Seoul. This force was supplemented by 700 men from the surrounding area, including monks and female warriors.

Over three days, Kwon Yul built a dense defense system, with at least 40 hwacha systems. Facing them were 30,000 samurai and Japanese soldiers, under the command of famous generals such as Ukita Hideie, Kato Kiyomasa, and Kuroda Nagasama.

The Japanese army launched three continuous attacks on the ancient fortress from the morning of February 12, 1593. However, the hwacha system and Joseon archers continuously rained arrows, while Korean soldiers threw large rocks, boiling oil and molten metal at the enemy. The thick defense repelled all Japanese attacks.

Hwacha có thể dùng mũi tên nhỏ để tăng tầm bắn. Ảnh: Wikipedia.

Hwacha can use small arrows to increase the range of the shot. Photo: Wikipedia.

At noon on February 12, 1593, the fourth wave of attacks led by Ukita broke through the outermost defenses of the Korean army. However, the Japanese forces were still repelled by the hwacha rocket launchers, while Ukita was seriously wounded. By the afternoon, the supply of hwacha arrows began to run out, and the Korean army faced the risk of being completely annihilated.

Just as the Japanese were preparing for a full-scale assault, the Korean soldiers inside the castle were reinforced with 10,000 arrows. They were quickly loaded into all the hwacha bases, creating a storm of missiles that rained down on the charging Japanese samurai. By the night of February 12, all three famous Japanese generals had been wounded by the hwacha and were forced to retreat. The Japanese suffered a total of 1,000 deaths after nine attacks.

Three months later, the Koreans retook Seoul. General Kwon Yul claimed that the hwacha's formidable firepower was the decisive factor in repelling the Japanese in this campaign.

The Imjin War lasted for another five years, devastating much of Korea. The decisive battle took place at dawn on December 16, 1598, when a force of 63 Chinese warships and 82 Korean panokseons secretly attacked a fleet of 500 Japanese warships south of the Korean Peninsula.

The Koreans took full advantage of the firepower of their hwachas and cannons. By the morning of December 16, the Japanese fleet had lost more than half of its warships and was forced to withdraw. Eight days later, the entire Japanese army had completed its withdrawal from the Korean Peninsula.

According to VNE

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North Korean 'super rocket' terrified Japanese samurai in 15th century
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