6. Battle of Kawanakajima (1561)
The Battle of Kawanakajima, fought on October 18, 1561, was the fourth and most intense of five engagements between Takeda Shingen and Uesugi Kenshin. Both armies suffered significant casualties, with estimates suggesting over 4,000 for Takeda and 3,000 for Uesugi. Despite the ferocity, the battle ended inconclusively, leaving the strategic Kawanakajima plain contested. This series of conflicts has become emblematic of samurai rivalry and valor in Japanese history (samuraiwr.com).
