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 First Lieutenant (Air Service) Alfred B. Patterson, Jr., United States Army Air Service, for extraordinary heroism in action while serving with 93d Aero Squadron, 3d Pursuit Group, U.S. Army Air Service, A.E.F., in the region of Moirey, France, 23 October 1918. Lieutenant Patterson led a formation for the purpose of protecting our bombing planes, the accompanying planes being obliged to return, due to engine trouble. Despite this fact, Lieutenant Patterson proceeded on the mission alone. He sighted an enemy patrol of nine machines (Fokker type) and attacked them, driving one down.