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Battles, incidents, and historical events related to Japanese swords
18 events
November 9, 1180 (20th day, 10th month, Jishō 4)
In the 10th month of Jishō 4 (1180), at the Fuji River in Suruga Province, the eastern warrior coalition under Minamoto no Yoritomo routed the pursuing Taira force led by Taira no Koremori. The Taira army's legendary flight at the sound of startled waterbirds masked the real significance: the rapid consolidation of Kantō warriors behind Yoritomo, establishing the foundation of what would become the Kamakura shogunate.
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23rd day of the 8th month, Jishō 4 (1180)
On the 23rd day of the 8th month of Jishō 4 (1180), Minamoto no Yoritomo, having just raised his banner in Izu, suffered a crushing defeat at Ishibashiyama in Sagami Province against the far larger Taira-aligned army of Ōba Kagechika. Yoritomo narrowly escaped with his life to Awa Province, rallied the warriors of the eastern provinces, and entered Kamakura in the 10th month of that year. This defeat — said to be the only one of his career — proved the turning point toward the founding of the Kamakura shogunate.
5th month, Jishō 4 (1180) – 3rd month, Juei 4 (1185)
A civil war fought by the Minamoto and Taira across Japan from Jishō 4 (1180) to Juei 4 (1185). This five-year war marked a fundamental turning point in the history of the Japanese sword. The tachi style, completed in the late Heian period, was put into actual combat. It is a campaign deeply engraved in later literature and performing arts, including Yoshitsune's stratagems, Taira no Tomomori's loyalty, and the fate of the Three Sacred Treasures.
1083–1087 (Eihō 3 – Kanji 1)
The contest for hegemony in Mutsu and Dewa, which broke out from Eihō 3 to Kanji 1 (1083–1087). Minamoto no Yoshiie intervened in the internal strife of the Kiyohara clan, brought down the Kanazawa Stockade, and established hegemony. Alongside the Earlier Nine Years' War as one of the two great Tōhoku wars, it raised the martial prestige of the Minamoto clan.
935–941 CE (Jōhei 5 – Tengyō 4)
Two simultaneous uprisings between 935 and 941 — Taira no Masakado's revolt in the Kantō and Fujiwara no Sumitomo's maritime rebellion in the Seto Inland Sea — marking the collapse of the ritsuryō state and the rise of the warrior class.
935–940 (Jōhei 5 – Tengyō 3)
An armed rebellion in the Kantō region during the Jōhei and Tengyō eras (935–940). Taira no Masakado seized the eight provinces of Bandō, proclaimed himself "New Emperor" (Shinnō) and defied the imperial court. The allied forces of Fujiwara no Hidesato and Taira no Sadamori killed Masakado and suppressed the rebellion, but the uprising became a historic turning point heralding the dawn of the age of the warriors.
797 (Enryaku 16): appointment as Sei'i Taishogun; 801–802 (Enryaku 20–21): decisive campaign
In 797 (Enryaku 16), Sakanoue no Tamuramaro was appointed Sei'i Taishogun (Shogun). Leading the third Emishi campaign in 801–802, he forced the submission of the Emishi chieftain Aterui and established Isawa Castle, relocating the military headquarters northward. Tamuramaro's combination of military force and conciliation consolidated central government control over northeastern Japan and established the historical precedent for the title of "Sei'i Taishogun"—a designation later inherited by Minamoto no Yoritomo, Ashikaga Takauji, and Tokugawa Ieyasu, becoming the defining title of samurai governance in Japan.
19 January–5 February 1160 (Heiji 1/12/9–12/26)
The 12th month of Heiji 1 (1159; January–February 1160 in the Western calendar): the second armed coup after the Hōgen Rebellion. Fujiwara no Nobuyori and Minamoto no Yoshitomo confined Retired Emperor Go-Shirakawa, but Taira no Kiyomori rapidly returned to the capital and suppressed them. Yoshitomo was killed in defeat, and the young Yoritomo was exiled to Izu. This civil war sealed Kiyomori's ascendancy and the fall of the Minamoto.
March 4, 1184 (Juei 3/1/20)
A civil war in the 1st month of Juei 3 (1184), in which Minamoto no Yoshinaka (Kiso Yoshinaka) clashed with Minamoto no Yoritomo's generals Minamoto no Yoshitsune and Minamoto no Noriyori. Yoshinaka deployed his forces along the Uji River as a natural line of defense, but after the famous "senjin arasoi" (the race to be first across) between Kajiwara Kagesue and Sasaki Takatsuna, Yoritomo's army broke through. Yoshinaka was killed at Awazu in Ōmi, and a decisive step toward the establishment of the Kamakura shogunate was marked.
4 March 1184 (Juei 3/1/20)
In the 1st month of Juei 3 (1184), Minamoto no Yoshinaka (Kiso Yoshinaka) was defeated by the forces of Minamoto no Yoshitsune and Minamoto no Noriyori, who acted on Minamoto no Yoritomo's orders, and was killed in the pine grove of Awazu in Ōmi Province (present-day Ōtsu City, Shiga Prefecture). His parting from Tomoe Gozen and his final moments, when his horse became trapped in a deep paddy field on the way to the pine grove and he was felled by an arrow, are told as a highlight of the war tale The Tale of the Heike. Together with Yoshinaka and Tomoe Gozen as symbols of "loyalty and love," they remain deeply engraved in the Japanese memory.
November 17, 1183 (Juei 2, intercalary 10th month, 1st day)
A naval battle fought at Mizushima in Bitchū Province in the intercalary 10th month of Juei 2 (1183), in which the punitive force of Minamoto no Yoshinaka clashed with the Taira navy. An annular solar eclipse occurred during the battle, and the Taira side, said to have been versed in calendrical science, overwhelmed the unsettled Genji forces to win a decisive victory.
June 2, 1183 (11th day, 5th month, Juei 2)
In the 5th month of Juei 2 (1183), Minamoto no Yoshinaka (Kiso Yoshinaka) annihilated the Taira army under Taira no Koremori at Kurikara Pass on the border of Etchū and Kaga provinces. Famous for the legendary 'fire-ox stratagem,' the victory opened Yoshinaka's path to Kyoto and marked a turning point in the Genpei War.
May 1019 (Kannin 3/3/28 to the 4th month)
In Kannin 3 (1019), pirate bands of Jurchen (Nüzhen) people known as the "Toi" suddenly raided Tsushima, Iki, and northern Kyushu. While the imperial court was slow to respond, Fujiwara no Takaie, the acting governor-general of Dazaifu (Dazai no Gon no Sotsu), and others succeeded in driving them off. A recorded foreign invasion 250 years before the Mongol invasions, it is an important event that became an impetus for the rise of the warrior class.
March 22, 1185 (19th day, 2nd month, Genryaku 2)
In the 2nd month of Genryaku 2 (1185), Minamoto no Yoshitsune launched a surprise attack on the Taira forces at Yashima on Shikoku, an important battle of the Genpei War. The crossing through the storm, Nasu no Yoichi's shooting of the fan target, and Akushichibyōe Kagekiyo's pulling of the shikoro: the fighting on both sea and land at the water's edge showed Yoshitsune's brilliant generalship and paved the way to Dan-no-ura.
April 25, 1185 (24th day, 3rd month, Genryaku 2 / Juei 4)
On the 24th day of the 3rd month of Genryaku 2 (1185), in the sea off Dan-no-ura in Nagato Province (present-day Shimonoseki, Yamaguchi Prefecture), the Minamoto forces led by Minamoto no Yoshitsune annihilated the Taira forces in a decisive naval battle. Emperor Antoku perished in the sea, the treasured sword sank into the sea, and the Taira clan was destroyed.
March 20, 1184 (7th day, 2nd month, Juei 3)
In the 2nd month of Juei 3 (1184), Genji forces led by Minamoto no Yoshitsune and Minamoto no Noriyori launched a surprise attack on the Taira army at Ichi-no-Tani in Settsu Province. Yoshitsune's “Hiyodorigoe sakaotoshi” descent is renowned as a daring stratagem that shines in the annals of war. The tragedy of Taira no Atsumori, a nephew of Taira no Kiyomori, produced episodes deeply engraved in sword culture and bushidō.
July 29, 1156 (11th day, 7th month, Hōgen 1)
In the 7th month of Hōgen 1 (1156), a conflict between Emperor Go-Shirakawa and Retired Emperor Sutoku drew in the Taira and Minamoto clans. Decided in a single night, the Hōgen Rebellion marked the decisive entry of warrior clans into central politics, featuring Taira no Kiyomori and Minamoto no Yoshitomo.
1051–1062 (Eishō 6 – Kōhei 5)
The Former Nine Years' War (1051–1062) was a protracted conflict in Mutsu Province between the Minamoto clan (Yoriyoshi and his son Yoshiie) and the Abe clan (Yoritoki and Sadato). The Minamoto victory, achieved with crucial Kiyohara clan reinforcements, established the Minamoto as the preeminent warrior house of the east and laid foundations for samurai political dominance.