Edited sentence: , United States Army Air Service, for extraordinary heroism in action while serving with 27th Aero Squadron, 1st Pursuit Group, U., near Etain, France, 18 September 1918., near St.Army Air Service, A.He turned to attack two, which were directly behind him, and shot them down.Immediately after destroying two enemy observation balloons, Lieutenant Luke was attacked by a large formation of German planes, Fokker type.Lieutenant Luke, by skill, determination, and bravery, and in the face of heavy enemy fire, successfully destroyed eight enemy observation balloons in four days.Mihiel, France, September 12 to 15, 1918.Sighting an enemy biplane, although his gasoline was nearly gone, he attacked and destroyed this machine also.The President of the United States of America, authorized by Act of Congress, July 9, 1918, takes pride in presenting a Bronze Oak Leaf Cluster in lieu of a Second Award of the Distinguished Service Cross (Posthumously) to Second Lieutenant (Air Service) Frank Luke, Jr.The President of the United States of America, authorized by Act of Congress, July 9, 1918, takes pride in presenting the Distinguished Service Cross (Posthumously) to Second Lieutenant (Air Service) Frank Luke, Jr