Battle of Sekigahara

Battle of Sekigahara
	Part of the Sekigahara Campaign during the Sengoku period
Date	October 21, 1600
Location	Sekigahara / Aonogahara Mino Province, present-day Gifu Prefecture, Japan35°22′14″N 136°27′42″E / 35.3705°N 136.4616°E
Result	Eastern army victory
Territorial; changes	Tokugawa clan gains nominal control of all Japan
Belligerents
Western Army: Forces loyal to Ishida Mitsunari, many clans from Western Japan	Eastern Army: Forces loyal to Tokugawa Ieyasu, clans of Eastern Japan
Commanders and leaders
Ishida Mitsunari ; Ukita Hideie; Ōtani Yoshitsugu †; Shima Sakon †; Chōsokabe Morichika; Gamō Yorisato †; Shimazu Yoshihiro; Shimazu Toyohisa †; Akashi Takenori; Konishi Yukinaga ; Toda Katsushige †; Ankokuji Ekei ; Mōri Hidemoto; Natsuka Masaie †; Hiratsuka Tamehiro †; Defected:; Kobayakawa Hideaki; Kikkawa Hiroie; Wakisaka Yasuharu; Kutsuki Mototsuna; Akaza Naoyasu; Ogawa Suketada	Tokugawa Ieyasu: Overall commander; Ii Naomasa: Supreme field commander; Fukushima Masanori; Tōdō Takatora; Hosokawa Tadaoki; Ikeda Terumasa; Oda Urakusai; Matsudaira Tadayoshi; Kuroda Nagamasa; Takenaka Shigekado; Honda Tadakatsu; Furuta Shigekatsu; Katō Yoshiaki; Terazawa Hirotaka; Ikoma Kazumasa; Tsutsui Sadatsugu; Horio Tadauji; Kanamori Nagachika; Asano Yoshinaga; Yamauchi Kazutoyo; Kyōgoku Takatomo
Strength
120,000 initially,; 81,890 by the time of battle	75,000 initially,; 88,888 by the time of battle
Casualties and losses
Sekigahara Gunki Taisei: 8,000–32,000 killed Tokugawa Jikki; The Chronicles of Toshogu Shrine: 35,270 killed; ~23,000 defected	Sekigahara Gunki Taisei: 4,000–10,000 killed; Tokugawa Jikki; The Chronicles of Toshogu Shrine: 8,000 killed
	Location within Gifu Prefecture Battle of Sekigahara (Japan)

The Battle of Sekigahara (Shinjitai: 関ヶ原の戦い; Kyūjitai: 關ヶ原の戰い, Hepburn romanization: Sekigahara no Tatakai) was an important battle in Japan which occurred on October 21, 1600 (Keichō 5, 15th day of the 9th month) in what is now Gifu Prefecture, Japan, at the end of the Sengoku period.

This battle was fought by the forces of Tokugawa Ieyasu against a coalition loyal to the Toyotomi clan, led by Ishida Mitsunari on behalf of the young child Toyotomi Hideyori, from which several commanders defected before or during the battle, leading to a Tokugawa victory. The Battle of Sekigahara was the largest battle of Japanese feudal history and is often regarded as the most important.

Mitsunari's defeat in the battle of Sekigahara is generally considered to be the beginning point of the Tokugawa shogunate, which ruled Japan for another two and a half centuries until 1868.