During the Russo-Japanese War of 1904-1905, Ogawa continued to command the IJA 4th Division under the Japanese Second Army of General Oku Yasukata. The division was in combat at the Battle of Nanshan, Battle of Telissu and Battle of Liaoyang. At the Battle of Liaoyang, Ogawa was injured in combat, and forced to relinquish his command and return to Tokyo. In January 1905, he was promoted to general, but took a medical leave from December 1905. He was awarded the Order of the Golden Kite, 2nd class in 1906. In September 1907 he was elevated to viscount ("shishaku")He officially retired in November.