 Yoshinaga achieved distinction together with his father in 1597, during the Siege of Ulsan, when they held the fortress under the command of Katō Kiyomasa.Though the Asano family was secure following its service under Tokugawa Ieyasu at the Battle of Sekigahara, it would be moved to Wakayama Domain, in Kii Province.The family would again be moved, to Hiroshima Domain, in the early 17th century.