Following Takeda Katsuyori's crushing defeat at [[Battle of Nagashino|Nagashino]], an army under Oda Nobutada (Nobunaga's eldest son) laid siege to [[Iwamura Castle|Iwamura]], which Akiyama had captured for the Takeda in February [[1572]]. The much-weakened Takeda clan could not come to the aid of Iwamura, which fell in December. Akiyama was captured and executed and by this siege Nobunaga reclaimed all of Mino Province.
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Following Takeda Katsuyori's crushing defeat at [[Battle of Nagashino|Nagashino]], an army under Oda Nobutada (Nobunaga's eldest son) laid siege to [[Iwamura Castle|Iwamura]], which Akiyama had captured for the Takeda in February [[1572]]. The much-weakened [[Takeda clan]] could not come to the aid of Iwamura, which fell in December. Akiyama was captured and executed and by this siege Nobunaga reclaimed all of Mino province.