The Sengoku period (30 July 1570) occurred near Lake Biwa in ?mi Province, Japan, between the allied forces of Oda Nobunaga and Tokugawa Ieyasu, against the combined forces of the Azai and Asakura clans. It is notable as the first battle that involved the alliance between Nobunaga and Ieyasu, liberated the Oda clan from its unbalanced alliance with the Azai, and saw Nobunaga's prodigious use of firearms.
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