Battle of Kiyosu
1552 CE.
Shown on the map at 35.193°, 136.837°.
Battle of Kiyosu Castle or Battle of Kaizu (August 16, 1552 - April 20, 1554) was the first victory of the young Oda Nobunaga in his struggle to unite the province of Owari against his cousin, Oda Nobutomo, deputy governor of southern Owari.
Text from the Wikipedia article Battle of Kiyosu Castle, licensed CC BY-SA 4.0.