Battle of Odaihara
The 1546 Battle of Odaihara was one of many steps taken by Takeda Shingen, one of Japan's great warlords of the Sengoku period of Japan, in his bid to take over Shinano province. The conflict took place on 19 September 1546.
While besieging Shika castle, Shingen detached a part of his troops and met the forces of Uesugi Norimasa on the plains of Odaihara. The advancing army was tasked to augment the defense of the castle, which was close to Norimasa's territories. In the ambush, Shingen defeated Uesugi's army. He decapitated 15 senior samurai and 300 ashigaru and displayed the severed heads in front of the Shika castle.
