Yukimura, his father Masayuki Sanada and their small army fought bravely against Ieyasu Tokugawa at the Battle of Sekigahara and gained fame and honor for defeating a much larger foe. At that time, Yukimura parted ways with older brother Noboyuki, and set off with his father and the western army to hold back Hidetada Tokugawa (son of shogun Ieyasu Tokugawa) at Ueda Castle. Upon the defeat of the western army, he fled to Kudoyama and waited 14 years, then accepting Hideyori Toyotomi’s invitation to Osaka Castle. During the wintertime battle at Osaka, he constructed Sanada Castle, demonstrating his resourcefulness and bravery. He rejected an offer from Ieyasu Tokugawa to govern the province of Shinano, opting instead to oppose him on the battlefield until the end. At the summertime battle of Chausuyama, he broke through the enemy army and reached Tokugawa’s flag three times, instilling fear in Tokugawa until his dying day.