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 in lieu of the Certificate of Merit previously issued to Corporal John S. Aldridge, United States Army, for gallant conduction while serving as a member of Company D, 19th Infantry Regiment, in action at Mount Bud-Dajo, Jolo, Philippine Islands, on 7 March 1906.