Battle of Yamazaki
In 1581, he took part on Tenshō Iga War, he was one of several who led Nobunaga's troops in the Siege of Hijiyama. The following year, Akechi betrayed Oda Nobunaga and took his power and lands, but was defeated two weeks later at the Battle of Yamazaki. Wakisaka then joined the victor, Hashiba Hideyoshi, who had become a conspicious figure as a retainer of Oda Nobunaga.