Oda Nobunaga (June 23, 1534 ??June 21, 1582) was the initiator of the unification of Japan under the rule of the shogun in the late 16th century, a rule that ended only with the opening of Japan to the Western world in 1868. He was also a major daimyo during the Sengoku period of Japanese history. His work was continued, completed and finalized by his successors Toyotomi Hideyoshi and Tokugawa Ieyasu. He was the second son of Oda Nobuhide, a deputy shugo (military governor) with land holdings in Owari Province.

Nobunaga lived a life of continuous military conquest, eventually conquering a third of Japanese daimyo before his death in 1582. His successor, Toyotomi Hideyoshi, a loyal Oda supporter, would eventually become the first man to conquer all of Japan and the first ruler of all Japan since the ?nin War.