The President of the United States of America, authorized by Act of Congress, July 9, 1918, takes pleasure in presenting the Army Distinguished Service Medal to Lieutenant Colonel (Field Artillery) Robert Arthur, United States Army, for exceptionally meritorious and distinguished services to the Government of the United States, in a duty of great responsibility during World War I. Lieutenant Colonel Arthur commanded the 121st Field Artillery, 32d Division, American Expeditionary Forces, during the Aisne-Marne, Oise-Aisne and Meuse-Argonne offensives with distinction. In addition he served as Chief of Heavy Artillery of the 57th Field Artillery Brigade in those offensives. His high professional skill, sound judgment, leadership, and devotion to duty were material factors in the successful operations of the artillery forces with which he served.