In May, he departed for the front of the Russo-Japanese War, and during this military campaign, he assumed office as Army General, Commander of Oryokuko-gun and took part in the Battle of Mukden.
5月から日露戦争に出征し、この戦役の際、陸軍大将・鴨緑江軍司令官に就任し奉天会戦に参加。