Oda Nobunaga, with about 50,000 men, crossed the Tedorigawa at night to attack Uesugi Kenshin. Kenshin, who had about 30,000 men was expecting the move and was ready. Nobunaga was defeated.
In this battle, Oda Nobunaga defeated Imagawa Yoshimoto and established himself as one of the front-running warlords in the Sengoku period.
This was all reported to Oda Nobunaga by his scouts, who then led his own force into position at a temple called ZenshÅji.
Had Nobunaga decided on a frontal assault, the battle would have been deceptively easy to predict; his army was outnumbured ten to one by the Imagawa forces.