Since the areas beyond Okayama City, Bizen Province, which were governed by Hideie UKITA, were under the influence of Mori, the Oda forces and the Mori forces ended up having fierce battles around the borders between Bizen Province and Bitchu Province.
宇喜多秀家が領していた備前国岡山市から先は毛利の勢力範囲であったため、織田軍と毛利軍は備前・備中国国境地帯で攻防を繰り広げることとなった。