Attacked by the Mori clan, the Amako clan holed up in Gassan Toda-jo Castle, which was praised as impregnable, in the current Yasuki City, Shimane Prefecture, but surrendered after starvation tactics by the Mori clan (Gassan Toda-jo no Tatakai (Battle of Gassan Toda-jo Castle)).
毛利氏に攻められ、難攻不落と讃えられていた今の島根県安来市にあった月山富田城に篭城するが兵糧攻めにあい開城した（月山富田城の戦い）。