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 Colonel (Medical Corps) Charles H. Mayo, 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. In addition to the manifold service to the Surgeon General by furnishing needed advice and counsel, Colonel May distinguished himself by exceptionally meritorious service to the Government in his work in the organization of surgical service and his invaluable assistance in the reorganization of the Medical Department on the scale demanded by the war.