The President of the United States of America, authorized by Act of Congress, July 9, 1918, takes pleasure in presenting the Silver Star to First Lieutenant (Air Corps) John Francis Thornell, Jr. (ASN: 0-797743), United States Army Air Forces, for gallantry in action while serving as Pilot a P-51 Mustang Fighter Aircraft of the 328th Fighter Squadron, 352d Fighter Group, EIGHTH Air Force, on a bomber escort mission over Germany, on 19 April 1944. When the engine of Lieutenant Thornell’s plane developed a malfunction, he was unable to maintain contact with his unit and started the long return journey alone. Shortly thereafter, he observed a straggling B-17 being attacked by seven FW-190s. Though out-numbered by the enemy, Lieutenant Thornell made an aggressive head-on attack, heavily damaging one fighter and forcing the others to disperse. In the engagement which followed, he destroyed one FW-190 and then positioned himself on the tail of another, this, in spite of the fact that his own aircraft was not operating properly. Pressing the attack tenaciously, he followed the enemy fighter down to tree-top level, causing him to hit a tree, cartwheel and explode. The gallantry, aggressive fighting spirit and skill in combat displayed by Lieutenant Thornell resulted in the dispersal of an enemy force which would have been a hazard to other bombers in the vicinity.