Fourth Battle of Kawanakajima

Timeline

1. 1557Kawanakajima · Shinano ProvinceFollowing the Kawanakajima clashes of 1553 and 1555, Takeda Shingen again marched north to contest control of northern Shinano with Uesugi Kenshin. Both sides mustered large armies and faced off at Kawanakajima.
2. 1557Sai River · Shinano ProvinceThe two armies engaged near the Sai River, with Takeda and Uesugi forces repeatedly charging and heavy casualties in localized fighting. According to records such as the Kōyō Gunkan, this was one of the series of Kawanakajima battles, smaller in scale than the fourth major battle of 1561.
3. 1557Kawanakajima · Shinano ProvinceThe engagement produced no decisive result; the Uesugi army withdrew, and Takeda likewise failed to fully secure key positions in northern Shinano. Kawanakajima remained a frontline contested between Kai and Echigo forces, with the standoff continuing until the larger battle of 1561.