Battle of Sekigahara
Following the death of Toyotomi Hideyoshi, Japan's daimyo split into rival coalitions over control of the realm. On 21 October 1600, Tokugawa Ieyasu's Eastern Army decisively defeated the Western coalition under Ishida Mitsunari at Sekigahara in a single day of battle, partly through the defection of key western lords. The victory was the culminating civil war of the Sengoku period (1467-1615), a unifying conflict that resolved more than a century of warfare among autonomous warlords into a single national hegemony. Ieyasu redistributed domains on a vast scale, rewarding allies and confining potential rivals. In 1603 Ieyasu took the title of shogun, founding the Tokugawa shogunate that would rule for 250 years. The Sekigahara settlement froze Japanese society into the codified four-tier order and, with the later sakoku closure, produced a long peace whose internal contradictions — an impoverished samurai class and a rising merchant economy — would define the structural tensions leading to 1868.
- Year: 1600 CE
- Category: Military
