| This
Week in Core |
Samurai Maps |
Battle of Nagashino |
Siege of
Iwamura |
Samurai's Tale Page |
Oda Nobunaga (30,000 men) and Tokugawa
Ieyasu
(8,000 men)
vs.
Takeda Katsuyori, son of Takeda Shingen (12,000
men)
In the summer of 1575, Takeda Katsuyori led his army into the Tokugawa domain and laid siege to Nagashino Castle, a locally important strongpoint that had changed hands a number of times in the previous few years.
The castle's defenders managed to resist the initial Takeda attacks, and thanks to the heroic efforts of a samurai named Torii Sune'emon, managed to alert Tokugawa Ieyasu of their plight. Tokugawa then convinced his ally Oda Nobunaga to commit to a battle with the Takeda.

Oda Nobutada, son of Oda Nobunaga (30,000 men)
vs.
Akiyama Nobutomo, vassal of Takeda Shingen
(3,000
men)
Iwamura Castle once belonged to Oda Nobunaga, and was held
by Toyama Kageto, who was married to Oda's aunt. When Toyama died
suddenly of illness, leaving his widow in command, the castle was attacked by the Takeda general Akiyama Nobutomo.
In February 1572, the lady Toyama negotiated
the surrender of the castle and her own marriage to Akiyama in exchange
for his protection.
After the defeat of the Takeda at Nagashino in 1575, Oda decided it was time to recapture Iwamura Castle. Under the command of Oda's son Nobutada, his army laid siege to the castle. They surrounded the hilltop castle, remaining there for six months while the castle defenders gradually ran out of supplies. The rest of the Takeda clan was much weakened after their losses at Nagashino and could not afford to send reinforcements to Akiyama. The castle fell in December 1575. Akiyama and his wife were captured and executed.