The Boshin War (1868–1869) and Japanese Swords: The Clash Between Samurai Blades and Modern Weaponry in Japan's Last Civil War

The Boshin War: Watershed Moment in Sword Culture History

The Boshin War (ぼしんせんそう, 1868–1869) was the largest civil conflict in modern Japanese history, fought between the Meiji government (centered on the new government forces of Satsuma, Chōshū, Tosa, and others) and the allied forces of the old Edo bakufu and various domains (the old bakufu forces).

Beginning with the Battle of Toba-Fushimi (January 1868), continuing through the bloodless opening of Edo, the resistance of northeastern domains, and culminating in the final decisive battles at Hakodatе (Hakodate) and Goryōkaku (May 1869), the war ended. More than a mere transfer of power, this conflict represented the end of samurai society and the birth of the modern nation-state.

From the perspective of sword history, the Boshin War represents one of the "last large-scale battles in which samurai actually used swords in combat."

The Shinsengumi and Swords: The Twilight of Bakumatsu Swordsmen

The most emblematic "story of swords and swordsmen" in the Boshin War was provided by the Shinsengumi. Members of the Shinsengumi—including Kondō Isao, Hijikata Toshizō, and Okita Sōji—fought with swords as their primary weapons, from maintaining order in late Edo period Kyoto through to the battlefields of the Boshin War.

From Toba-Fushimi to Kōfu: Facing the Meiji government's modern firearms (Snider rifles, Gras rifles, and others), the Shinsengumi fought with swords and spears as their primary equipment. While suffering repeated defeats due to overwhelming firepower superiority, records indicate they achieved certain results in close-quarters combat with swords.

The Final Days of Hijikata Toshizō: Hijikata Toshizō, who fought continuously until the final decisive battle at Hakodatе and Goryōkaku, embodied a samurai general who carried swords while wielding Western firearms—a contradiction itself. His death in June 1869, killed by gunfire, has been passed down through the centuries as a symbol of "the end of the age of swords."

The Aizu Domain and Swords: Samurai Honor and Tragedy

The most tragic episodes involving swords during the Boshin War were left by the Aizu Domain (present-day Fukushima Prefecture).

The Aizu Domain fought to the end on the side of the old bakufu, and the siege of Aizu Wakamatsu Castle (Tsuruga Castle) from August to September 1868 was fierce and bitter. In this battle, many samurai fought sword in hand both inside and outside the castle walls, and the scene of young warriors of the Byakkotai (White Tiger Unit) taking their own lives while wearing their swords is known as a tragedy in modern Japanese history.

The Byakkotai's Swords: The members of the Byakkotai, composed of the younger sons of Aizu Domain samurai, were boys aged 16–17, many just past their coming-of-age ceremony. The swords they wore at the time of their self-inflicted deaths at Iiamoriyama (19 warriors died by their own hands) are preserved today in the Byakkotai Memorial Hall and other locations in Aizu Wakamatsu, symbolizing the tragic aspects of sword culture during the Boshin War.

The Reality of Sword Equipment in the Old Bakufu Forces

During the Boshin War, the equipment of old bakufu and domain samurai consisted of more than swords alone. The Edo bakufu had already actively introduced Western firearms, and under the guidance of French military advisors (including Brunel), infantry units were armed primarily with rifles.

However, the sword remained worn as a personal weapon and functioned as an identity marker for officers and samurai. The frequency of actual combat use varied by era and unit, but it is said that swords were drawn many times in close-quarters combat.

Impact on Sword Culture in the Aftermath

The Path to the Sword Abolition Edict

During the seven years between the end of the Boshin War (1869) and the promulgation of the Hattō Edict (1876), the Meiji government addressed the issue of samurai sword-wearing with caution. The experience of the Boshin War—the reality that old bakufu samurai and their swords could become powerful resistance forces—was one reason the government hesitated to ban sword-wearing.

Finally, with the Hattō Edict of 1876, sword-wearing was prohibited. However, this was not a simple matter of "modernization," but rather a political decision made after the bloodshed and internal conflict of the Boshin War and the Satsuma Rebellion.

Swords Transformed into Heirlooms and Memorabilia

The swords worn by samurai who participated in the Boshin War were inherited by their descendants as heirlooms and keepsakes after the war. These swords, bearing the special historical value of "swords used in the Boshin War," are now housed in museums and historical archives throughout the country—in Aizu, Hakodatе, Yamagata, and elsewhere.

Impact on Swordsmiths

Some regions experienced a temporary activation of sword-forging due to demand from the Boshin War (particularly swordsmiths in the Kantō and Tōhoku regions within the old bakufu sphere of influence). However, with the war's end and the Hattō Edict, the sword industry underwent rapid decline in the years that followed.

Conclusion

The Boshin War symbolizes "the last era when the Japanese sword was used in large-scale actual combat." The swords of the Shinsengumi swordsmen, the young samurai of the Byakkotai, and the warriors who continued fighting through the final stages at Aizu and Hakodatе embody the moment when Japanese sword culture concluded its "age as a practical weapon." To understand the subsequent flow of the Hattō Edict, the Satsuma Rebellion, and the aestheticization of swords during the Meiji period, the Boshin War provides an indispensable historical context.