Japan. (Russo - Japanese War) 1905. Picture post card of 'First Army at the River Ai' addressed to 'Lt. Colonel Baron Corvisart' cancelled by '1st Army Mail Department' date stamp '3rd Jan 05' with framed vernacular instructional in carmine.
Baron Corvisart was a French Military Observer with the Japanese Army and French Military Attaché to Japan. At the time the 1st Army was at winter quarters at the Sha - Ho (river).