Although Fuchu sannin shu were the yoriki of Katsuie SHIBATA, they were a half independent flying column of Oda and often dispatched as reinforcement for the siege of Ishiyama Hongan-ji Temple, the stabilization of the Harima Province and the conquest of Murashige ARAKI.
府中三人衆は柴田勝家の与力とはいえ、半ば独立した織田軍の遊撃軍的存在で、石山本願寺攻めや播磨国平定、荒木村重征伐などに援軍として駆り出されることが多かった。