The Battle of Ankokuji was a battle during the Sengoku period

Sengoku period

The or Warring States period in Japanese history was a time of social upheaval, political intrigue, and nearly constant military conflict that lasted roughly from the middle of the 15th century to the beginning of the 17th century. The name "Sengoku" was adopted by Japanese historians in reference...

 (16th century) of Japan.

The battle of Ankokuji was a rather minor battle that took place after the fall of Fukuyo

Siege of Fukuyo

The siege of Fukuyo was the one of many steps taken by Takeda Shingen in his bid to seize control of Shinano Province. The fortress at Fukuyo lay in the Ina valley, south of Lake Suwa. Tozawa Yorichika, an ally of Takatō Yoritsugu, lord of Takatō castle, surrendered quickly. The Battle of Ankokuji...

, in at which Takato Yoritsugu had surrendered to the Takeda forces. Following this, Itagaki Nobukata

Itagaki Nobukata

was a retainer of the Takeda family. His name is also seen with different kanji as 信形.Nobukata served under both Takeda Nobutora and Takeda Shingen and also was tasked with young Shingen...

, a retainer under Takeda Shingen

Takeda Shingen

, of Kai Province, was a preeminent daimyo in feudal Japan with exceptional military prestige in the late stage of the Sengoku period.-Name:Shingen was called "Tarō" or "Katsuchiyo" during his childhood...

 would personally finish off Yoritsugu at Ankokuji. Yoritsugu's younger brother, Yorimune however would be killed during this battle.