This large military force began to invade Higashi (east) Mino Province, the territory of the Oda clan and Totomi and Mikawa Provinces, the territories of Tokugawa (the strategy to conquer the west).
その大軍が織田領の東美濃国、並びに徳川領の遠江国、三河国に侵攻を開始する（西上作戦）。