The Shogun-less Age
During the Epoch of the Warring Countries the Japanese state almost disintegrated, as the Daimyo (= great name) became hereditary princes and fought each other in civil wars. But during the sixteenth century three powerful Daimyo emerged to recreate the Japanese Empire :
Oda Nobunga (1534 - 82), who occupied Kyoto and eliminated the last Ashikaga Shogun.
Hideyoshi Toyotomi (1537 - 1598), Japan's most
brilliant commander who broke the reign of the Daimyo.
Ieyasu Tokugawa who defeated Hideyoshi's successor, set up a police state, transfered his capital to Edo (Tokyo), and initiated the Tokugawa Shogunate which ruled Japan peacefully for over two hundred years.
www link :
Unification of Japan Comprehensive web site about Nobunga and Hideyoshi.