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| Battle of Anegawa | |
|---|---|
| Conflict | Battle of Anegawa |
| Partof | Sengoku period |
| Date | 30 July 1570 |
| Place | Anegawa, Ōmi Province |
| Result | Oda–Tokugawa victory |
| Combatant1 | Oda clan Tokugawa clan |
| Combatant2 | Azai clan Asakura clan |
| Commander1 | Oda Nobunaga Tokugawa Ieyasu |
| Commander2 | Azai Nagamasa Asakura Yoshikage |
| Strength1 | ~30,000 |
| Strength2 | ~20,000 |
| Casualties1 | unknown |
| Casualties2 | heavy |
Battle of Anegawa.
The Battle of Anegawa was a major 1570 engagement in the Sengoku period fought near the Anegawa (Ane River) in Ōmi Province between the allied forces of Oda Nobunaga and Tokugawa Ieyasu and the allied defenders of Azai Nagamasa and Asakura Yoshikage. The clash formed part of the wider struggle for hegemony among daimyō and shifted the balance of power in central Japan, influencing campaigns involving figures such as Takeda Shingen, Uesugi Kenshin, and institutions like Ikkō-ikki.
By the late 1560s the rise of Oda Nobunaga disrupted networks of alliances among daimyō including the Azai clan and Asakura clan. Nobunaga’s seizure of Kyōto and patronage of the Ashikaga shogunate under Ashikaga Yoshiaki placed him in direct contention with regional houses such as the Rokkaku clan and the Ikkō-ikki. The marriage alliance between Azai Nagamasa and Nobunaga’s sister Oichi had briefly linked the Azai to the Oda before fractures over control of Ōmi Province and support for the Asakura produced open hostility that culminated in pitched battles including the fight at the Anegawa.
Oda Nobunaga’s contingent drew retainers from allied houses such as the Ikeda clan, Saitō clan, Ogasawara clan, and commanders like Akechi Mitsuhide and Shibata Katsuie, while Tokugawa Ieyasu contributed veterans from the Matsudaira clan, Honda clan, and Miyake clan. The Azai and Asakura fielded forces from provincial networks including the Rokkaku clan, Kyōgoku clan, and vassals loyal to Azai Nagamasa and Asakura Yoshikage. Prominent warrior families present included the Kawajiri clan, Nakagawa clan, Ii clan, and notable retainers such as Endō Naotsune on the Azai side and Okada Sukesaburō on the Oda–Tokugawa side. Contemporary inventories mention ashigaru, mounted yari ashigaru, units of arquebusiers linked to the Tanegashima introduction, and samurai contingents modeled after formations seen in campaigns of Imagawa Yoshimoto and Mōri Motonari.
Nobunaga’s offensive into Ōmi Province followed campaigns against the Rokkaku and consolidation in Gifu and Owari Province. The Azai–Asakura coalition resisted Oda expansion, coordinating with northern lords who opposed Nobunaga’s influence in Kyōto. Tokugawa Ieyasu’s participation reflected shifting allegiances following the collapse of Imagawa influence after Imagawa Yoshimoto’s death at Battle of Okehazama. Intelligence and scouting by retainers such as Niwa Nagahide and Mori Ranmaru informed Nobunaga’s plans, while Asakura scouts and Azai horsemen under commanders like Isono Kazumasa sought river crossings at Anegawa and defensive positions near castles like Odani Castle and Hieizan-adjacent holdings. The broader context included maneuvers by the Takeda clan in the east and the diplomatic maneuvers of Ashikaga Yoshiaki seeking patronage.
On 30 July 1570 the two alliances met along the Ane River; coordinated assaults were launched with Nobunaga leading against Azai positions and Ieyasu attacking Asakura forces. Oda units under Katsuyori-era veterans and commanders like Ikeda Tsuneoki pressed through arquebus lines while Tokugawa cavalry exploited gaps against Asakura pikemen. The Azai–Asakura defense attempted to use hedgerows, paddy fields, and river fords to blunt the assault; commanders including Saitō Toshimitsu and Yamaguchi Noritsugu led counterattacks. Flanking moves by Shibata Katsuie and coordinated volleys of tanegashima firearms helped collapse Azai formations, while Tokugawa pressure forced Asakura withdrawals toward Echizen routes. Notable incidents reported in chronicles involve fierce close combat by samurai such as Hattori Hanzō-era retainers and the valor of Azai warriors defending Odani approaches. By evening the Oda–Tokugawa alliance had routed much of the opposition, capturing matériel and inflicting heavy casualties; several Azai and Asakura commanders were killed or fled to allied strongholds.
The victory at Anegawa allowed Nobunaga to press sieges against Odani Castle and impose strategic pressure on the Asakura heartlands, paving the way for later operations that included sieges and punitive expeditions involving figures like Hashiba Hideyoshi (later Toyotomi Hideyoshi). Tokugawa Ieyasu consolidated influence in Mikawa and Tōtōmi Province and strengthened ties that culminated in later coalitions opposing Takeda Shingen and contested succession struggles affecting the Ashikaga shogunate. The defeat weakened the Azai–Asakura axis and contributed to the eventual fall of Azai Nagamasa and the destruction of Asakura Yoshikage’s power, altering alliance patterns among houses such as the Mōri clan, Chōsokabe clan, and Satake clan.
The battle entered popular memory through war tales and military chronicles like the Shinchō kōki and inspired depictions in later artistic media including ukiyo-e prints, kabuki dramatizations, and modern historical novels and films portraying Nobunaga and Ieyasu. Visual representations by artists studying Kanō school aesthetics and woodblock printers later joined dramatizations in NHK Taiga drama series and manga about the Sengoku period, influencing portrayals of samurai such as in works about Akechi Mitsuhide and Oichi. Modern scholarship in journals on Japanese history compares primary records from the Azai and Oda archives with archaeological surveys near the Ane River and castle sites like Odani Castle, contributing to debates involving battlefield archaeology, military technology diffusion including tanegashima firearms, and the role of riverine terrain in Sengoku battles.
Category:Battles of the Sengoku period Category:1570 in Japan