桶狭間の戦い（1560年）と刀剣文化——奇襲戦が示した戦国刀の実戦性

The Battle of Okehazama

On May 19, Eiroku 3 (June 12, 1560), the forces of Oda Nobunaga and Imagawa Yoshimoto clashed at Okehazama in Chita County, Owari Province (present-day Aichi Prefecture). Against Imagawa Yoshimoto, who invaded Owari leading a great army said to number between 25,000 and 50,000, Nobunaga launched a surprise attack on the enemy's main camp with merely around 2,000 troops and defeated Yoshimoto. This battle is widely known as the turning point where Nobunaga set out toward the unification of all Japan.

The Yoshimoto Samonji—A Famous Blade Claimed as War Spoils

The Shinchō-kōki records a samonji blade that Imagawa Yoshimoto wore. This blade, which was Yoshimoto's prized possession, came into Nobunaga's hands as war spoils when he defeated Yoshimoto, and came to be called "Yoshimoto Samonji" and "The Blade of Heaven's Conquest" in later ages. After Nobunaga's death, it is said to have passed to Toyotomi Hideyoshi and was ultimately presented to Tokugawa Ieyasu. The lineage of this blade, passed from one ruler of all Japan to another, demonstrates that swords functioned as symbols of authority beyond mere weapons.

Surprise Attack Tactics and the Practical Effectiveness of Swords

The Battle of Okehazama is also a prime example of a surprise attack involving hand-to-hand combat in an era when firearms were not yet the dominant force on the battlefield. In close combat amid chaotic fighting, it is believed that blades, along with spears, were employed as the decisive weapon. The fact that Imagawa's main camp, despite commanding a large army, was caught off guard and attacked demonstrates that tactical skill and mobility determined victory more than equipment advantage.

Experiencing Sword Culture Online

The histories of blades worn by Sengoku-period warlords continue to captivate sword enthusiasts today. On our site's online catalog, we introduce swords for sale from various periods and traditions.