Battle of Anegawa
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The Sengoku period Battle of Anegawa occurred near Lake Biwa in Ōmi Province, Japan, between the allied forces of Oda Nobunaga and Tokugawa Ieyasu, against the combined forces of the Azai and Asakura clans. Wikipedia
Location: Ane River, Ōmi Province, Shiga, and more
Date: July 30, 1570
28,000 total (23,000 Oda troops, plus 5,000 from Tokugawa Ieyasu): 18,000