Yamagata was a fierce warrior who fought in many battles and was given a fief in Shinano. He was present at the Battle of Mimasetoge in 1569 and captured Yoshida Castle, a Tokugawa possession, during the Mikatagahara Campaign (1572–73) and was present for the following Battle of Mikatagahara. His last campaign was in the ill fated Battle of Naga...