Battle of Nagashino

Battle of Nagashino
source
Conflict	Battle of Nagashino
Partof	Sengoku period
Date	28 June 1575
Place	near Nagashino Castle, Mikawa Province
Result	Victory for Oda–Tokugawa forces
Combatant1	Oda Nobunaga–Tokugawa Ieyasu alliance
Combatant2	Takeda Katsuyori
Commander1	Oda Nobunaga, Tokugawa Ieyasu, Okudaira Sadamasa
Commander2	Takeda Katsuyori
Strength1	~38,000
Strength2	~15,000–20,000
Casualties1	~1,000–2,000
Casualties2	~10,000–15,000

Battle of Nagashino The Battle of Nagashino was fought on 28 June 1575 near Nagashino Castle in Mikawa Province during the Sengoku period. The engagement pitted an alliance led by Oda Nobunaga and Tokugawa Ieyasu against the forces of Takeda Katsuyori and resulted in a decisive defeat for the Takeda clan. The battle is often cited for its use of arquebus units in volley fire and for altering the balance among warlords such as Uesugi Kenshin and Hōjō Ujiyasu.

Background

In the years leading to 1575 tensions among the Oda clan, Tokugawa clan, and Takeda clan escalated after the death of Takeda Shingen and the rise of Takeda Katsuyori. Oda Nobunaga consolidated power following campaigns including Battle of Okehazama and the sieges of Ishiyama Hongan-ji, while Tokugawa Ieyasu secured holdings in Mikawa Province and Mino Province. The Takeda incursions into Mikawa and the siege of Nagashino Castle threatened supply lines linked to Kyoto and alarmed regional lords such as Ikeda Tsuneoki, Honda Tadakatsu, and Hattori Hanzō. Previous confrontations—like skirmishes near Kawanakajima and maneuvers involving Oda Nobutada—set the stage for a major pitched battle. Diplomatic contacts involving Azai Nagamasa and Asakura Yoshikage shifted allegiances, while mercantile interests in Ise Province and naval power under Kuki Yoshitaka influenced logistics.

Forces and Commanders

Oda–Tokugawa forces combined elements from the Oda clan, Tokugawa clan, Ikeda clan, Mōri clan detachments, and retainers such as Niwa Nagahide, Takigawa Kazumasu, and Sakuma Morimasa. Command coordination involved Oda Nobunaga and Tokugawa Ieyasu with tactical direction from officers including Okudaira Sadamasa, Anayama Baisetsu, and Ii Naomasa. The allied force deployed units from provinces like Owari Province, Mikawa Province, and Mino Province. Takeda Katsuyori commanded veteran cavalry from the Takeda clan with veterans of Takeda Shingen’s campaigns, led by generals such as Kobayakawa Takakage (note: different Kobayakawa), Yamagata Masakage, Yokota Takatoshi, and Katsunuma Nobutomo. Siege forces that had been occupying positions around Nagashino Castle included local garrison leaders and ashigaru drawn from Kai Province.

Battle

As Takeda Katsuyori advanced, his forces attempted a rapid cavalry assault against the Oda–Tokugawa encampment near the Tamagawa tributary and the Shinano River basin. Oda Nobunaga and Tokugawa Ieyasu arranged defensive works including wooden palisades and trenches anchored by firearms deployed by ashigaru from Owari, Mino, and Mikawa. The Takeda cavalry launched repeated mounted charges across open ground, engaging contingents led by retainers such as Honda Tadakatsu and Ii Naomasa; these were met by disciplined volleys from arquebusiers commanded by officers like Sakuma Morimasa. Close-quarter fighting occurred near the fields outside Nagashino Castle and along access routes used by supply wagons escorted by Okudaira Sadamasa. After sustained losses and the collapse of cavalry formations, Takeda lines broke and retreat turned into rout, with many Takeda dead or captured. Campaign aftermath included pursuit operations led by Tokugawa Ieyasu and consolidation of Oda positions in adjacent provinces like Tōtōmi.

Tactics and Technology

The encounter showcased coordinated use of arquebus units arranged in rotating ranks to maintain continuous fire, a method contemporarily associated with innovations by Oda Nobunaga and influenced by contacts with Portuguese traders such as Fernão Mendes Pinto and firearms diffusion from Macau. Defensive timberworks, chevaux-de-frise adaptations, and use of composed infantry lines contrasted with the Takeda emphasis on shock cavalry honed in battles like Kawanakajima. Command and control integrated signaling via drum and banner systems from traditions seen in ashigaru formations and samurai directives traced to offices like bugyō. Logistic considerations—ammunition resupply, horse remounts, and castle provisioning at Nagashino Castle—played critical roles, as did intelligence from scouts and diplomatic envoys between clans such as Hōjō Ujiyasu and Uesugi Kenshin.

Aftermath and Consequences

The decisive defeat weakened the Takeda clan politically and militarily, undermining Takeda Katsuyori’s authority and precipitating defections among retainers and vassals. The battle accelerated shifts in regional hegemony benefiting Oda Nobunaga and Tokugawa Ieyasu, influencing later campaigns including the Siege of Odawara and the consolidation that led toward the Azuchi–Momoyama period. Contemporaneous observers and later historians debated the extent to which volley fire represented a revolutionary change; chroniclers such as those in the Shinchō Kōki and later commentators referenced the action in discussions about warfare evolution alongside events like the Siege of Ishiyama Hongan-ji. The Takeda collapse contributed to power vacuums exploited by houses like the Hōjō clan and opportunists in Echigo Province, while offering lessons adopted by commanders continuing into the campaigns of Toyotomi Hideyoshi and the eventual rise of Tokugawa shogunate.

Category:Battles of the Sengoku period