On June 3, 1615 the Eastern Army of Tokugawa Ieyasu and the Osaka Army of Toyotomi Hideyori clashed in battle at Dōmyōji (道明寺の戦い; Dōmyōji no tatakai), Osaka. This battle was one of Japan's major historical battles between samurai forces. This battle was one of a number of battles that took place during the Summer Campaign of the Siege of Osaka that led up to the fall of Osaka to the forces of Tokugawa and the death of Toyotomi Hideyori.