Akiyama was active in the First Sino-Japanese War of 1894-1895 as a cavalry regimental commander in the IJA 1st Division, and served with Japanese expeditionary forces in the subsequent Boxer Rebellion with the IJA 5th Division. In the Russo-Japanese War of 1904-1905, he led his troops in the Battle of Shaho, Battle of Sandepu, and in the Battle of Mukden against the Cossack cavalry divisions of the Imperial Russian Army. In April 1906, he was awarded the Order of the Golden Kite (2nd class).