|Siege of Kojinyama|
|Part of the Sengoku period|
|forces of Takeda Shingen||forces of Tozawa family|
|Commanders and leaders|
|Takeda Shingen||Tozawa Yorichika|
In the 1544 siege of Kojinyama, Takeda Shingen continued his invasion of Shinano Province's Ima Valley, seizing Kojinyama fortress from the Tozawa family.
- Turnbull, Stephen (1998). 'The Samurai Sourcebook'. London: Cassell & Co.
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