By direction of the President, under the provisions of the act of Congress approved July 9, 1918 (Bul. No. 43, W.D., 1918), Lieutenant Commander (MC) Cornelius H. Mack, United States Navy, is cited by the Commanding General, SECOND DIVISION A.E.F., for gallantry in action and a silver star may be placed upon the ribbon of the Victory Medals awarded him. Lieutenant Commander Mack distinguished himself by gallantry in action while serving as a Surgeon attached to the Sixth Regiment (Marines), 2d Division, American Expeditionary Forces, in action against the enemy in the Chateau-Thierry Sector, France, during World War I.