Two famous daimyos, Shingen Takeda and Kenshin Uesugi, battle for their territories at Kawanakashima Nagano. The battle lasted for 12 years. The major battles of this war took place in 1553, 1555, 1557, 1561, and 1564.
This is the most intense battle at sea for the Imperial Japanese Navy and its battle-ship, Akagi. As a result of this battle, Japan wins the command of the Yellow Sea during The First Sino-Japanese War.