Takeda Katsuyori. As Nobunaga's successor In May 1575, at the battle of Nagashino and started his career as the supreme commander of the attack on Iwamura Castle (Siege of Iwamura Castle). He repelled the Takeda army that had attacked the Oda army at night and defeated more than 1,100, and defeated Takeda clan commander Akiyama Nobutomo to open Iwamura Castle. After that, even in a series of battles with Takeda clan, he would make a big name for himself. On November 28, 1576, Nobunaga handed over the Oda clan's lord, eastern Mino, and part of Owari Province, and was entrusted with its control. In addition, the younger brother of Nohime, Saito Toshiharu, became an aide (chief vassal) to Nobutada. In the same year, he was placed under the fifth rank (正五位), and he was appointed to Dewasuke (出羽介) and then Akita Josuke(秋田城介), aiming to become a shogun. Since Yoshiaki Ashikaga was still a shogun, which ordinarily means a general in Bingo Province even under the Oda administration, the Oda clan had no choice but to become a shogun. It is also said that this official position was meaningful in opposition to the Uesugi family, who was also the guardian of Echigo. In February of the 5th year of Tensho (1577), Nobutada attacked Nakano Castle and captured it, and in March, Suzuki Shigehide (Sonichi Saika) and others surrendered to him . In August, he became the supreme general of the rebellious subjugation of Matsunaga Hisahide, and commanded generals such as Hosokawa Fujitaka and Akechi Mitsuhide, who lead his army, and captured Shigisan Castle, where Matsunaga Hisahide and his son, Matsunaga Hisamichi barricaded themselves. Due to his achievements, he was ordained to the third rank (従三位) Sakonoefu (左近衛府中将) on October 15. From around this time, he took command of the generals as a general in place of Nobunaga. On December 28, eight types of tea utensils that Nobunaga had were handed over, and on the following day, three more types were handed over. In 1578, Mori Terumoto, the head of the Mori clan, mobilized a large army of more than 100,000 to recapture Kōzuki Castle in Harima Province. Terumoto himself set up main camp near Takamatsu castle, and he made his main vassals, such as Kobayakawa Takakage, Ukita Tadaie, and the Murakami Navy to deploy to Harima Province and surround Kōzuki Castle with their army of 61,000 people. Nobunaga also sent Nobutada