三方ヶ原の戦い
Baba fought in the Kawanakajima campaigns, and led the Takeda army that besieged and destroyed Katsurayama, a major Uesugi clan stronghold in 1557. In 1573, he took part in the Battle of Mikatagahara, during which the troops under his command chased Tokugawa Ieyasu's army back to Hamamatsu fortress; upon seeing the gates open and braziers lit, Baba mistakenly suspected a trap, and did not press the fleeing army further. Following Takeda Shingen's death, Baba served his successor Takeda Katsuyori. He led the Takeda army's right-wing in the Battle of Nagashino in 1575, and was killed in combat during that engagement.